/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/parallel-misc-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 14:54:46,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 14:54:46,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 14:54:46,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 14:54:46,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 14:54:46,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 14:54:46,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 14:54:46,720 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-07 14:54:46,767 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 14:54:46,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 14:54:46,777 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 14:54:46,778 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 14:54:46,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 14:54:46,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 14:54:46,782 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 14:54:46,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 14:54:46,783 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 14:54:46,783 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 14:54:46,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 14:54:46,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 14:54:46,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 14:54:46,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-07 14:54:46,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 14:54:46,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-07 14:54:46,786 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-07 14:54:46,786 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 14:54:46,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-07 14:54:46,786 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 14:54:46,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-07 14:54:46,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 14:54:46,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 14:54:46,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 14:54:46,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 14:54:46,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 14:54:46,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 14:54:46,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-07 14:54:46,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-07 14:54:46,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-07 14:54:46,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-07 14:54:46,789 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 14:54:46,789 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 14:54:47,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 14:54:47,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 14:54:47,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 14:54:47,216 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 14:54:47,217 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 14:54:47,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2021-10-07 14:54:47,309 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/785e48c91/f24f4264dbc1496a8600b74694f49e8c/FLAGd9c9c2249 [2021-10-07 14:54:48,004 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 14:54:48,005 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2021-10-07 14:54:48,015 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/785e48c91/f24f4264dbc1496a8600b74694f49e8c/FLAGd9c9c2249 [2021-10-07 14:54:48,334 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/785e48c91/f24f4264dbc1496a8600b74694f49e8c [2021-10-07 14:54:48,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 14:54:48,346 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-07 14:54:48,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 14:54:48,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 14:54:48,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 14:54:48,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:54:48" (1/1) ... [2021-10-07 14:54:48,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bf6936b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:54:48, skipping insertion in model container [2021-10-07 14:54:48,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:54:48" (1/1) ... [2021-10-07 14:54:48,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 14:54:48,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 14:54:48,570 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/parallel-misc-3.wvr.c[2273,2286] [2021-10-07 14:54:48,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 14:54:48,581 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 14:54:48,606 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/parallel-misc-3.wvr.c[2273,2286] [2021-10-07 14:54:48,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 14:54:48,630 INFO L208 MainTranslator]: Completed translation [2021-10-07 14:54:48,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:54:48 WrapperNode [2021-10-07 14:54:48,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 14:54:48,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 14:54:48,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 14:54:48,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 14:54:48,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:54:48" (1/1) ... [2021-10-07 14:54:48,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:54:48" (1/1) ... [2021-10-07 14:54:48,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 14:54:48,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 14:54:48,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 14:54:48,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 14:54:48,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:54:48" (1/1) ... [2021-10-07 14:54:48,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:54:48" (1/1) ... [2021-10-07 14:54:48,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:54:48" (1/1) ... [2021-10-07 14:54:48,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:54:48" (1/1) ... [2021-10-07 14:54:48,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:54:48" (1/1) ... [2021-10-07 14:54:48,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:54:48" (1/1) ... [2021-10-07 14:54:48,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:54:48" (1/1) ... [2021-10-07 14:54:48,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 14:54:48,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 14:54:48,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 14:54:48,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 14:54:48,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:54:48" (1/1) ... [2021-10-07 14:54:48,717 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 14:54:48,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:48,745 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 14:54:48,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 14:54:48,823 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 14:54:48,824 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 14:54:48,824 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 14:54:48,824 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 14:54:48,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-07 14:54:48,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 14:54:48,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-07 14:54:48,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 14:54:48,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 14:54:48,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 14:54:48,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 14:54:48,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-07 14:54:48,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 14:54:48,828 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 14:54:49,377 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 14:54:49,377 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-07 14:54:49,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:54:49 BoogieIcfgContainer [2021-10-07 14:54:49,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 14:54:49,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 14:54:49,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 14:54:49,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 14:54:49,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:54:48" (1/3) ... [2021-10-07 14:54:49,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb0bed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:54:49, skipping insertion in model container [2021-10-07 14:54:49,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:54:48" (2/3) ... [2021-10-07 14:54:49,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb0bed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:54:49, skipping insertion in model container [2021-10-07 14:54:49,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:54:49" (3/3) ... [2021-10-07 14:54:49,391 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2021-10-07 14:54:49,398 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-07 14:54:49,398 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 14:54:49,398 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-10-07 14:54:49,398 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 14:54:49,468 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,469 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,471 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,472 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,473 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,473 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,473 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,473 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,474 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,474 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,474 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,475 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,475 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,477 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,477 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,477 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,478 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,479 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,480 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,480 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,480 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,481 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,481 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,481 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,484 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,485 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,485 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,486 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,491 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,491 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,491 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,492 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,492 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,492 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,492 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,493 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,498 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,498 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,498 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,498 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,499 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,503 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,503 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,503 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:54:49,516 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-07 14:54:49,593 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 14:54:49,609 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 14:54:49,609 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-10-07 14:54:49,648 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 14:54:49,663 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 100 transitions, 216 flow [2021-10-07 14:54:49,668 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 100 transitions, 216 flow [2021-10-07 14:54:49,670 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 100 transitions, 216 flow [2021-10-07 14:54:49,763 INFO L129 PetriNetUnfolder]: 11/98 cut-off events. [2021-10-07 14:54:49,763 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-07 14:54:49,769 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 98 events. 11/98 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 154 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 57. Up to 4 conditions per place. [2021-10-07 14:54:49,776 INFO L116 LiptonReduction]: Number of co-enabled transitions 1728 [2021-10-07 14:54:54,077 INFO L131 LiptonReduction]: Checked pairs total: 2156 [2021-10-07 14:54:54,078 INFO L133 LiptonReduction]: Total number of compositions: 104 [2021-10-07 14:54:54,092 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 26 transitions, 68 flow [2021-10-07 14:54:54,112 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 122 states, 98 states have (on average 3.0918367346938775) internal successors, (303), 121 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:54,117 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 98 states have (on average 3.0918367346938775) internal successors, (303), 121 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:54,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 14:54:54,124 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:54,125 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 14:54:54,126 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-07 14:54:54,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:54,132 INFO L82 PathProgramCache]: Analyzing trace with hash 439579, now seen corresponding path program 1 times [2021-10-07 14:54:54,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:54,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368826108] [2021-10-07 14:54:54,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:54,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:54,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:54,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:54,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368826108] [2021-10-07 14:54:54,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368826108] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:54:54,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:54:54,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 14:54:54,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074595917] [2021-10-07 14:54:54,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:54:54,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:54,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:54:54,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:54,390 INFO L87 Difference]: Start difference. First operand has 122 states, 98 states have (on average 3.0918367346938775) internal successors, (303), 121 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:54,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:54,480 INFO L93 Difference]: Finished difference Result 146 states and 364 transitions. [2021-10-07 14:54:54,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:54:54,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 14:54:54,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:54,501 INFO L225 Difference]: With dead ends: 146 [2021-10-07 14:54:54,501 INFO L226 Difference]: Without dead ends: 146 [2021-10-07 14:54:54,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:54,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-07 14:54:54,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 138. [2021-10-07 14:54:54,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 114 states have (on average 3.0701754385964914) internal successors, (350), 137 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:54,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 350 transitions. [2021-10-07 14:54:54,594 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 350 transitions. Word has length 3 [2021-10-07 14:54:54,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:54,596 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 350 transitions. [2021-10-07 14:54:54,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:54,597 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 350 transitions. [2021-10-07 14:54:54,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 14:54:54,598 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:54,598 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 14:54:54,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-07 14:54:54,599 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-07 14:54:54,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:54,600 INFO L82 PathProgramCache]: Analyzing trace with hash 13628591, now seen corresponding path program 1 times [2021-10-07 14:54:54,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:54,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974810961] [2021-10-07 14:54:54,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:54,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:54,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:54,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:54,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974810961] [2021-10-07 14:54:54,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974810961] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:54:54,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200428224] [2021-10-07 14:54:54,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:54,761 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:54,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:54,765 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:54:54,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-07 14:54:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:54,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 14:54:54,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:55,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:55,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200428224] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:54:55,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:54:55,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2021-10-07 14:54:55,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419510904] [2021-10-07 14:54:55,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 14:54:55,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:55,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 14:54:55,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:54:55,079 INFO L87 Difference]: Start difference. First operand 138 states and 350 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:55,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:55,270 INFO L93 Difference]: Finished difference Result 234 states and 576 transitions. [2021-10-07 14:54:55,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 14:54:55,271 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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 4 [2021-10-07 14:54:55,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:55,274 INFO L225 Difference]: With dead ends: 234 [2021-10-07 14:54:55,275 INFO L226 Difference]: Without dead ends: 234 [2021-10-07 14:54:55,276 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-07 14:54:55,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-10-07 14:54:55,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 186. [2021-10-07 14:54:55,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 162 states have (on average 3.253086419753086) internal successors, (527), 185 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:55,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 527 transitions. [2021-10-07 14:54:55,294 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 527 transitions. Word has length 4 [2021-10-07 14:54:55,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:55,294 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 527 transitions. [2021-10-07 14:54:55,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:55,295 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 527 transitions. [2021-10-07 14:54:55,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 14:54:55,296 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:55,296 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2021-10-07 14:54:55,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-07 14:54:55,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:55,512 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-07 14:54:55,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:55,513 INFO L82 PathProgramCache]: Analyzing trace with hash 422487963, now seen corresponding path program 2 times [2021-10-07 14:54:55,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:55,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909279321] [2021-10-07 14:54:55,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:55,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:55,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:55,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:55,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909279321] [2021-10-07 14:54:55,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909279321] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:54:55,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196178311] [2021-10-07 14:54:55,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:54:55,602 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:55,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:55,603 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:54:55,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-07 14:54:55,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 14:54:55,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:54:55,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 14:54:55,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:55,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:55,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196178311] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:54:55,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:54:55,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 14:54:55,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927440069] [2021-10-07 14:54:55,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 14:54:55,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:55,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 14:54:55,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 14:54:55,901 INFO L87 Difference]: Start difference. First operand 186 states and 527 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:56,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:56,247 INFO L93 Difference]: Finished difference Result 362 states and 939 transitions. [2021-10-07 14:54:56,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 14:54:56,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 14:54:56,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:56,252 INFO L225 Difference]: With dead ends: 362 [2021-10-07 14:54:56,252 INFO L226 Difference]: Without dead ends: 352 [2021-10-07 14:54:56,253 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 112.3ms TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:54:56,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-10-07 14:54:56,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 230. [2021-10-07 14:54:56,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 206 states have (on average 3.4514563106796117) internal successors, (711), 229 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:56,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 711 transitions. [2021-10-07 14:54:56,274 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 711 transitions. Word has length 5 [2021-10-07 14:54:56,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:56,274 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 711 transitions. [2021-10-07 14:54:56,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:56,275 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 711 transitions. [2021-10-07 14:54:56,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 14:54:56,275 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:56,276 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 14:54:56,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-07 14:54:56,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:56,492 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-07 14:54:56,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:56,493 INFO L82 PathProgramCache]: Analyzing trace with hash 211595222, now seen corresponding path program 1 times [2021-10-07 14:54:56,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:56,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001138274] [2021-10-07 14:54:56,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:56,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:56,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:56,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:56,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001138274] [2021-10-07 14:54:56,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001138274] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:54:56,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:54:56,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:54:56,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460656482] [2021-10-07 14:54:56,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:54:56,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:56,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:54:56,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:54:56,585 INFO L87 Difference]: Start difference. First operand 230 states and 711 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:56,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:56,653 INFO L93 Difference]: Finished difference Result 318 states and 923 transitions. [2021-10-07 14:54:56,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:54:56,654 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 6 [2021-10-07 14:54:56,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:56,659 INFO L225 Difference]: With dead ends: 318 [2021-10-07 14:54:56,659 INFO L226 Difference]: Without dead ends: 318 [2021-10-07 14:54:56,659 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 [2021-10-07 14:54:56,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-10-07 14:54:56,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 276. [2021-10-07 14:54:56,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 252 states have (on average 3.5) internal successors, (882), 275 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:56,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 882 transitions. [2021-10-07 14:54:56,696 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 882 transitions. Word has length 6 [2021-10-07 14:54:56,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:56,731 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 882 transitions. [2021-10-07 14:54:56,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:56,732 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 882 transitions. [2021-10-07 14:54:56,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 14:54:56,733 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:56,734 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:54:56,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-07 14:54:56,734 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-07 14:54:56,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:56,735 INFO L82 PathProgramCache]: Analyzing trace with hash -2030492260, now seen corresponding path program 1 times [2021-10-07 14:54:56,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:56,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788263231] [2021-10-07 14:54:56,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:56,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:56,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:56,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:56,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788263231] [2021-10-07 14:54:56,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788263231] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:54:56,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011867573] [2021-10-07 14:54:56,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:56,804 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:56,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:56,805 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:54:56,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-07 14:54:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:56,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 14:54:56,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:56,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:56,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011867573] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:54:56,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:54:56,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-07 14:54:56,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105397310] [2021-10-07 14:54:56,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:54:56,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:56,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:54:56,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:54:56,900 INFO L87 Difference]: Start difference. First operand 276 states and 882 transitions. Second operand has 5 states, 4 states have (on average 3.25) 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) [2021-10-07 14:54:56,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:56,961 INFO L93 Difference]: Finished difference Result 470 states and 1462 transitions. [2021-10-07 14:54:56,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:54:56,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) 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 7 [2021-10-07 14:54:56,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:56,967 INFO L225 Difference]: With dead ends: 470 [2021-10-07 14:54:56,967 INFO L226 Difference]: Without dead ends: 470 [2021-10-07 14:54:56,968 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:54:56,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-10-07 14:54:56,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 310. [2021-10-07 14:54:56,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 286 states have (on average 3.629370629370629) internal successors, (1038), 309 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:56,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 1038 transitions. [2021-10-07 14:54:56,984 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 1038 transitions. Word has length 7 [2021-10-07 14:54:56,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:56,984 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 1038 transitions. [2021-10-07 14:54:56,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) 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) [2021-10-07 14:54:56,985 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 1038 transitions. [2021-10-07 14:54:56,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 14:54:56,986 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:56,986 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:54:57,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-07 14:54:57,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:57,202 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-07 14:54:57,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:57,203 INFO L82 PathProgramCache]: Analyzing trace with hash -2030526863, now seen corresponding path program 1 times [2021-10-07 14:54:57,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:57,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449143924] [2021-10-07 14:54:57,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:57,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:57,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:57,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:57,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449143924] [2021-10-07 14:54:57,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449143924] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:54:57,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148224511] [2021-10-07 14:54:57,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:57,236 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:57,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:57,238 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:54:57,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-07 14:54:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:57,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 14:54:57,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:57,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:57,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148224511] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:54:57,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:54:57,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-07 14:54:57,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514672133] [2021-10-07 14:54:57,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:54:57,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:57,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:54:57,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:54:57,326 INFO L87 Difference]: Start difference. First operand 310 states and 1038 transitions. Second operand has 5 states, 4 states have (on average 3.25) 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) [2021-10-07 14:54:57,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:57,406 INFO L93 Difference]: Finished difference Result 474 states and 1462 transitions. [2021-10-07 14:54:57,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:54:57,406 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) 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 7 [2021-10-07 14:54:57,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:57,412 INFO L225 Difference]: With dead ends: 474 [2021-10-07 14:54:57,412 INFO L226 Difference]: Without dead ends: 474 [2021-10-07 14:54:57,413 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:54:57,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-10-07 14:54:57,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 372. [2021-10-07 14:54:57,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 348 states have (on average 3.6149425287356323) internal successors, (1258), 371 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:57,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1258 transitions. [2021-10-07 14:54:57,433 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1258 transitions. Word has length 7 [2021-10-07 14:54:57,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:57,433 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 1258 transitions. [2021-10-07 14:54:57,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) 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) [2021-10-07 14:54:57,434 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1258 transitions. [2021-10-07 14:54:57,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 14:54:57,435 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:57,435 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-07 14:54:57,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-07 14:54:57,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:57,649 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-07 14:54:57,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:57,649 INFO L82 PathProgramCache]: Analyzing trace with hash -2030480828, now seen corresponding path program 2 times [2021-10-07 14:54:57,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:57,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316569577] [2021-10-07 14:54:57,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:57,650 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:57,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:57,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:57,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316569577] [2021-10-07 14:54:57,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316569577] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:54:57,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666299023] [2021-10-07 14:54:57,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:54:57,722 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:57,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:57,728 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:54:57,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-07 14:54:57,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 14:54:57,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:54:57,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 14:54:57,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:57,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:57,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666299023] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:54:57,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:54:57,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 14:54:57,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433712952] [2021-10-07 14:54:57,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 14:54:57,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:57,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 14:54:57,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-07 14:54:57,930 INFO L87 Difference]: Start difference. First operand 372 states and 1258 transitions. Second operand has 8 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) [2021-10-07 14:54:58,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:58,102 INFO L93 Difference]: Finished difference Result 538 states and 1665 transitions. [2021-10-07 14:54:58,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 14:54:58,102 INFO L78 Accepts]: Start accepts. Automaton has has 8 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 7 [2021-10-07 14:54:58,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:58,108 INFO L225 Difference]: With dead ends: 538 [2021-10-07 14:54:58,108 INFO L226 Difference]: Without dead ends: 538 [2021-10-07 14:54:58,109 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 46.2ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:54:58,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-10-07 14:54:58,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 416. [2021-10-07 14:54:58,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 392 states have (on average 3.5280612244897958) internal successors, (1383), 415 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:58,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 1383 transitions. [2021-10-07 14:54:58,129 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 1383 transitions. Word has length 7 [2021-10-07 14:54:58,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:58,129 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 1383 transitions. [2021-10-07 14:54:58,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 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) [2021-10-07 14:54:58,129 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 1383 transitions. [2021-10-07 14:54:58,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 14:54:58,130 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:58,131 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:54:58,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-07 14:54:58,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:58,346 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-07 14:54:58,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:58,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1478178569, now seen corresponding path program 1 times [2021-10-07 14:54:58,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:58,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886712978] [2021-10-07 14:54:58,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:58,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:58,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:58,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:58,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886712978] [2021-10-07 14:54:58,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886712978] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:54:58,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602208648] [2021-10-07 14:54:58,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:58,397 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:58,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:58,398 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:54:58,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-07 14:54:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:58,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 14:54:58,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:58,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:58,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602208648] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:54:58,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:54:58,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2021-10-07 14:54:58,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936118428] [2021-10-07 14:54:58,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 14:54:58,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:58,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 14:54:58,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-07 14:54:58,585 INFO L87 Difference]: Start difference. First operand 416 states and 1383 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:58,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:58,794 INFO L93 Difference]: Finished difference Result 736 states and 2220 transitions. [2021-10-07 14:54:58,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 14:54:58,795 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 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 8 [2021-10-07 14:54:58,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:58,801 INFO L225 Difference]: With dead ends: 736 [2021-10-07 14:54:58,801 INFO L226 Difference]: Without dead ends: 736 [2021-10-07 14:54:58,802 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 69.6ms TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:54:58,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-10-07 14:54:58,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 530. [2021-10-07 14:54:58,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 506 states have (on average 3.652173913043478) internal successors, (1848), 529 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:58,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1848 transitions. [2021-10-07 14:54:58,850 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1848 transitions. Word has length 8 [2021-10-07 14:54:58,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:58,850 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 1848 transitions. [2021-10-07 14:54:58,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:58,851 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1848 transitions. [2021-10-07 14:54:58,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 14:54:58,852 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:58,852 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:54:58,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-07 14:54:59,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:59,065 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-07 14:54:59,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:59,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1421189200, now seen corresponding path program 1 times [2021-10-07 14:54:59,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:59,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114913661] [2021-10-07 14:54:59,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:59,068 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:59,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:54:59,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:59,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114913661] [2021-10-07 14:54:59,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114913661] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:54:59,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:54:59,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:54:59,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845948345] [2021-10-07 14:54:59,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:54:59,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:59,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:54:59,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:59,125 INFO L87 Difference]: Start difference. First operand 530 states and 1848 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:59,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:59,170 INFO L93 Difference]: Finished difference Result 656 states and 2247 transitions. [2021-10-07 14:54:59,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:54:59,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-07 14:54:59,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:59,177 INFO L225 Difference]: With dead ends: 656 [2021-10-07 14:54:59,177 INFO L226 Difference]: Without dead ends: 656 [2021-10-07 14:54:59,178 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:54:59,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-10-07 14:54:59,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 574. [2021-10-07 14:54:59,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 550 states have (on average 3.6745454545454543) internal successors, (2021), 573 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:59,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 2021 transitions. [2021-10-07 14:54:59,204 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 2021 transitions. Word has length 9 [2021-10-07 14:54:59,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:59,204 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 2021 transitions. [2021-10-07 14:54:59,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:59,205 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 2021 transitions. [2021-10-07 14:54:59,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 14:54:59,206 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:59,206 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:54:59,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-07 14:54:59,206 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-07 14:54:59,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:59,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1421189225, now seen corresponding path program 2 times [2021-10-07 14:54:59,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:59,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768098092] [2021-10-07 14:54:59,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:59,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:54:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:54:59,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:59,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:54:59,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768098092] [2021-10-07 14:54:59,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768098092] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:54:59,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056776515] [2021-10-07 14:54:59,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:54:59,274 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:54:59,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:54:59,275 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:54:59,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-07 14:54:59,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 14:54:59,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:54:59,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 14:54:59,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:54:59,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:54:59,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056776515] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:54:59,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:54:59,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-07 14:54:59,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813781821] [2021-10-07 14:54:59,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 14:54:59,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:54:59,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 14:54:59,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:54:59,496 INFO L87 Difference]: Start difference. First operand 574 states and 2021 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 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) [2021-10-07 14:54:59,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:54:59,729 INFO L93 Difference]: Finished difference Result 914 states and 2992 transitions. [2021-10-07 14:54:59,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 14:54:59,729 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 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 9 [2021-10-07 14:54:59,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:54:59,738 INFO L225 Difference]: With dead ends: 914 [2021-10-07 14:54:59,739 INFO L226 Difference]: Without dead ends: 914 [2021-10-07 14:54:59,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 65.5ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:54:59,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-10-07 14:54:59,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 652. [2021-10-07 14:54:59,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 628 states have (on average 3.609872611464968) internal successors, (2267), 651 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:54:59,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 2267 transitions. [2021-10-07 14:54:59,773 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 2267 transitions. Word has length 9 [2021-10-07 14:54:59,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:54:59,773 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 2267 transitions. [2021-10-07 14:54:59,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 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) [2021-10-07 14:54:59,774 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 2267 transitions. [2021-10-07 14:54:59,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 14:54:59,775 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:54:59,775 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:54:59,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-07 14:54:59,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-07 14:54:59,989 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-07 14:54:59,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:54:59,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1107277585, now seen corresponding path program 1 times [2021-10-07 14:54:59,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:54:59,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874666435] [2021-10-07 14:54:59,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:54:59,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:00,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:55:00,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:00,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874666435] [2021-10-07 14:55:00,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874666435] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:00,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591766532] [2021-10-07 14:55:00,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:00,073 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:00,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:00,074 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:55:00,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-07 14:55:00,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:00,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 14:55:00,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:00,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:55:00,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591766532] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:00,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:55:00,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-10-07 14:55:00,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954520919] [2021-10-07 14:55:00,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:55:00,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:00,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:55:00,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:55:00,344 INFO L87 Difference]: Start difference. First operand 652 states and 2267 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:00,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:00,805 INFO L93 Difference]: Finished difference Result 1242 states and 3660 transitions. [2021-10-07 14:55:00,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 14:55:00,806 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 14:55:00,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:00,816 INFO L225 Difference]: With dead ends: 1242 [2021-10-07 14:55:00,817 INFO L226 Difference]: Without dead ends: 1156 [2021-10-07 14:55:00,817 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 246.1ms TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2021-10-07 14:55:00,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-10-07 14:55:00,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 702. [2021-10-07 14:55:00,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 678 states have (on average 3.5073746312684366) internal successors, (2378), 701 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:00,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 2378 transitions. [2021-10-07 14:55:00,862 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 2378 transitions. Word has length 10 [2021-10-07 14:55:00,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:00,862 INFO L470 AbstractCegarLoop]: Abstraction has 702 states and 2378 transitions. [2021-10-07 14:55:00,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:00,863 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 2378 transitions. [2021-10-07 14:55:00,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 14:55:00,864 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:00,864 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:00,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-07 14:55:01,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-07 14:55:01,079 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-07 14:55:01,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:01,080 INFO L82 PathProgramCache]: Analyzing trace with hash 36457735, now seen corresponding path program 1 times [2021-10-07 14:55:01,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:01,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34215220] [2021-10-07 14:55:01,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:01,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:01,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:55:01,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:01,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34215220] [2021-10-07 14:55:01,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34215220] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:01,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596371402] [2021-10-07 14:55:01,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:01,184 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:01,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:01,186 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:55:01,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-07 14:55:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:01,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 14:55:01,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:01,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:55:01,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596371402] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:01,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:55:01,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-07 14:55:01,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183919304] [2021-10-07 14:55:01,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:55:01,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:01,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:55:01,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:55:01,452 INFO L87 Difference]: Start difference. First operand 702 states and 2378 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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) [2021-10-07 14:55:01,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:01,698 INFO L93 Difference]: Finished difference Result 1184 states and 3781 transitions. [2021-10-07 14:55:01,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 14:55:01,698 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 11 [2021-10-07 14:55:01,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:01,708 INFO L225 Difference]: With dead ends: 1184 [2021-10-07 14:55:01,709 INFO L226 Difference]: Without dead ends: 1184 [2021-10-07 14:55:01,709 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 80.8ms TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:55:01,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2021-10-07 14:55:01,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 792. [2021-10-07 14:55:01,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 768 states have (on average 3.6640625) internal successors, (2814), 791 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:01,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 2814 transitions. [2021-10-07 14:55:01,753 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 2814 transitions. Word has length 11 [2021-10-07 14:55:01,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:01,754 INFO L470 AbstractCegarLoop]: Abstraction has 792 states and 2814 transitions. [2021-10-07 14:55:01,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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) [2021-10-07 14:55:01,754 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 2814 transitions. [2021-10-07 14:55:01,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 14:55:01,755 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:01,756 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:01,795 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 [2021-10-07 14:55:01,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:01,970 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-07 14:55:01,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:01,970 INFO L82 PathProgramCache]: Analyzing trace with hash 108849865, now seen corresponding path program 2 times [2021-10-07 14:55:01,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:01,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445186135] [2021-10-07 14:55:01,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:01,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:02,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 14:55:02,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:02,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445186135] [2021-10-07 14:55:02,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445186135] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:02,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:02,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-07 14:55:02,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870645163] [2021-10-07 14:55:02,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:55:02,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:02,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:55:02,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:55:02,032 INFO L87 Difference]: Start difference. First operand 792 states and 2814 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:02,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:02,065 INFO L93 Difference]: Finished difference Result 716 states and 2182 transitions. [2021-10-07 14:55:02,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:55:02,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 14:55:02,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:02,071 INFO L225 Difference]: With dead ends: 716 [2021-10-07 14:55:02,072 INFO L226 Difference]: Without dead ends: 696 [2021-10-07 14:55:02,072 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:55:02,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2021-10-07 14:55:02,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 538. [2021-10-07 14:55:02,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 516 states have (on average 3.2131782945736433) internal successors, (1658), 537 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:02,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1658 transitions. [2021-10-07 14:55:02,092 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1658 transitions. Word has length 11 [2021-10-07 14:55:02,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:02,092 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 1658 transitions. [2021-10-07 14:55:02,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:02,092 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1658 transitions. [2021-10-07 14:55:02,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 14:55:02,093 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:02,093 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:02,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-07 14:55:02,094 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-07 14:55:02,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:02,094 INFO L82 PathProgramCache]: Analyzing trace with hash 108851695, now seen corresponding path program 1 times [2021-10-07 14:55:02,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:02,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136114842] [2021-10-07 14:55:02,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:02,095 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:02,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:55:02,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:02,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136114842] [2021-10-07 14:55:02,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136114842] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:02,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220882985] [2021-10-07 14:55:02,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:02,153 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:02,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:02,154 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) [2021-10-07 14:55:02,158 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 [2021-10-07 14:55:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:02,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 14:55:02,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:55:02,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220882985] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:02,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:55:02,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2021-10-07 14:55:02,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862103637] [2021-10-07 14:55:02,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:55:02,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:02,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:55:02,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:55:02,350 INFO L87 Difference]: Start difference. First operand 538 states and 1658 transitions. Second operand has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:02,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:02,717 INFO L93 Difference]: Finished difference Result 1348 states and 3843 transitions. [2021-10-07 14:55:02,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 14:55:02,717 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 14:55:02,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:02,728 INFO L225 Difference]: With dead ends: 1348 [2021-10-07 14:55:02,728 INFO L226 Difference]: Without dead ends: 1324 [2021-10-07 14:55:02,729 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 114.5ms TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2021-10-07 14:55:02,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2021-10-07 14:55:02,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 656. [2021-10-07 14:55:02,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 638 states have (on average 3.3213166144200628) internal successors, (2119), 655 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:02,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 2119 transitions. [2021-10-07 14:55:02,770 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 2119 transitions. Word has length 11 [2021-10-07 14:55:02,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:02,770 INFO L470 AbstractCegarLoop]: Abstraction has 656 states and 2119 transitions. [2021-10-07 14:55:02,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:02,771 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 2119 transitions. [2021-10-07 14:55:02,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 14:55:02,772 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:02,772 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:02,808 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 [2021-10-07 14:55:02,986 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,SelfDestructingSolverStorable13 [2021-10-07 14:55:02,987 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-07 14:55:02,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:02,988 INFO L82 PathProgramCache]: Analyzing trace with hash -920622637, now seen corresponding path program 1 times [2021-10-07 14:55:02,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:02,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535760995] [2021-10-07 14:55:02,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:02,989 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:03,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 14:55:03,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:03,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535760995] [2021-10-07 14:55:03,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535760995] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:03,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:03,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-07 14:55:03,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548575894] [2021-10-07 14:55:03,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:55:03,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:03,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:55:03,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:55:03,045 INFO L87 Difference]: Start difference. First operand 656 states and 2119 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:03,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:03,098 INFO L93 Difference]: Finished difference Result 930 states and 2876 transitions. [2021-10-07 14:55:03,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:55:03,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-07 14:55:03,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:03,107 INFO L225 Difference]: With dead ends: 930 [2021-10-07 14:55:03,107 INFO L226 Difference]: Without dead ends: 892 [2021-10-07 14:55:03,107 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:55:03,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2021-10-07 14:55:03,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 680. [2021-10-07 14:55:03,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 662 states have (on average 3.226586102719033) internal successors, (2136), 679 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:03,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 2136 transitions. [2021-10-07 14:55:03,137 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 2136 transitions. Word has length 12 [2021-10-07 14:55:03,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:03,138 INFO L470 AbstractCegarLoop]: Abstraction has 680 states and 2136 transitions. [2021-10-07 14:55:03,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:03,138 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 2136 transitions. [2021-10-07 14:55:03,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 14:55:03,139 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:03,139 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:03,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-07 14:55:03,140 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-07 14:55:03,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:03,140 INFO L82 PathProgramCache]: Analyzing trace with hash -920205507, now seen corresponding path program 1 times [2021-10-07 14:55:03,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:03,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232440050] [2021-10-07 14:55:03,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:03,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:03,179 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:55:03,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:03,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232440050] [2021-10-07 14:55:03,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232440050] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:03,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:03,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-07 14:55:03,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934374641] [2021-10-07 14:55:03,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:55:03,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:03,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:55:03,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:55:03,182 INFO L87 Difference]: Start difference. First operand 680 states and 2136 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) [2021-10-07 14:55:03,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:03,234 INFO L93 Difference]: Finished difference Result 772 states and 2330 transitions. [2021-10-07 14:55:03,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:55:03,234 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 [2021-10-07 14:55:03,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:03,241 INFO L225 Difference]: With dead ends: 772 [2021-10-07 14:55:03,242 INFO L226 Difference]: Without dead ends: 772 [2021-10-07 14:55:03,242 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:55:03,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-10-07 14:55:03,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 658. [2021-10-07 14:55:03,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 643 states have (on average 3.1664074650077763) internal successors, (2036), 657 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:03,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2036 transitions. [2021-10-07 14:55:03,269 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2036 transitions. Word has length 12 [2021-10-07 14:55:03,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:03,270 INFO L470 AbstractCegarLoop]: Abstraction has 658 states and 2036 transitions. [2021-10-07 14:55:03,270 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) [2021-10-07 14:55:03,270 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2036 transitions. [2021-10-07 14:55:03,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 14:55:03,271 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:03,271 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:03,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-07 14:55:03,272 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-07 14:55:03,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:03,272 INFO L82 PathProgramCache]: Analyzing trace with hash -920205523, now seen corresponding path program 1 times [2021-10-07 14:55:03,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:03,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979826730] [2021-10-07 14:55:03,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:03,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:03,314 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:55:03,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:03,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979826730] [2021-10-07 14:55:03,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979826730] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:03,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557253464] [2021-10-07 14:55:03,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:03,315 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:03,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:03,316 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) [2021-10-07 14:55:03,331 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 [2021-10-07 14:55:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:03,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 14:55:03,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:03,495 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:55:03,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557253464] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:03,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:55:03,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-10-07 14:55:03,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346087680] [2021-10-07 14:55:03,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 14:55:03,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:03,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 14:55:03,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-07 14:55:03,498 INFO L87 Difference]: Start difference. First operand 658 states and 2036 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:03,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:03,646 INFO L93 Difference]: Finished difference Result 960 states and 2856 transitions. [2021-10-07 14:55:03,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 14:55:03,646 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-07 14:55:03,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:03,654 INFO L225 Difference]: With dead ends: 960 [2021-10-07 14:55:03,655 INFO L226 Difference]: Without dead ends: 958 [2021-10-07 14:55:03,655 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 56.5ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:55:03,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2021-10-07 14:55:03,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 700. [2021-10-07 14:55:03,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 685 states have (on average 3.254014598540146) internal successors, (2229), 699 states have internal predecessors, (2229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:03,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 2229 transitions. [2021-10-07 14:55:03,684 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 2229 transitions. Word has length 12 [2021-10-07 14:55:03,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:03,685 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 2229 transitions. [2021-10-07 14:55:03,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:03,685 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 2229 transitions. [2021-10-07 14:55:03,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 14:55:03,686 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:03,686 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:03,727 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 [2021-10-07 14:55:03,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:03,899 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-07 14:55:03,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:03,900 INFO L82 PathProgramCache]: Analyzing trace with hash -918775657, now seen corresponding path program 2 times [2021-10-07 14:55:03,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:03,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122582004] [2021-10-07 14:55:03,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:03,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:04,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:55:04,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:04,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122582004] [2021-10-07 14:55:04,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122582004] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:04,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720586318] [2021-10-07 14:55:04,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:55:04,043 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:04,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:04,046 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) [2021-10-07 14:55:04,068 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 [2021-10-07 14:55:04,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 14:55:04,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:55:04,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 14:55:04,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:04,388 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:55:04,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720586318] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:04,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:55:04,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2021-10-07 14:55:04,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142942336] [2021-10-07 14:55:04,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 14:55:04,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:04,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 14:55:04,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-10-07 14:55:04,393 INFO L87 Difference]: Start difference. First operand 700 states and 2229 transitions. Second operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 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) [2021-10-07 14:55:04,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:04,631 INFO L93 Difference]: Finished difference Result 882 states and 2560 transitions. [2021-10-07 14:55:04,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 14:55:04,632 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 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 12 [2021-10-07 14:55:04,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:04,639 INFO L225 Difference]: With dead ends: 882 [2021-10-07 14:55:04,639 INFO L226 Difference]: Without dead ends: 832 [2021-10-07 14:55:04,640 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 129.8ms TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-10-07 14:55:04,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2021-10-07 14:55:04,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 638. [2021-10-07 14:55:04,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 623 states have (on average 3.1524879614767256) internal successors, (1964), 637 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:04,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1964 transitions. [2021-10-07 14:55:04,665 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1964 transitions. Word has length 12 [2021-10-07 14:55:04,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:04,665 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 1964 transitions. [2021-10-07 14:55:04,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 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) [2021-10-07 14:55:04,666 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1964 transitions. [2021-10-07 14:55:04,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 14:55:04,667 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:04,667 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:04,706 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 [2021-10-07 14:55:04,881 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,SelfDestructingSolverStorable17 [2021-10-07 14:55:04,882 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-07 14:55:04,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:04,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1556964670, now seen corresponding path program 1 times [2021-10-07 14:55:04,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:04,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259758368] [2021-10-07 14:55:04,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:04,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:04,976 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-07 14:55:04,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:04,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259758368] [2021-10-07 14:55:04,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259758368] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:04,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797332845] [2021-10-07 14:55:04,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:04,977 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:04,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:04,978 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) [2021-10-07 14:55:05,006 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 [2021-10-07 14:55:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:05,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 14:55:05,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:05,379 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:55:05,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797332845] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:05,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:55:05,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 9] total 12 [2021-10-07 14:55:05,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3025320] [2021-10-07 14:55:05,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 14:55:05,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:05,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 14:55:05,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:55:05,383 INFO L87 Difference]: Start difference. First operand 638 states and 1964 transitions. Second operand has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:05,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:05,605 INFO L93 Difference]: Finished difference Result 1258 states and 3660 transitions. [2021-10-07 14:55:05,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 14:55:05,606 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 13 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 13 [2021-10-07 14:55:05,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:05,616 INFO L225 Difference]: With dead ends: 1258 [2021-10-07 14:55:05,616 INFO L226 Difference]: Without dead ends: 1178 [2021-10-07 14:55:05,617 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 124.7ms TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2021-10-07 14:55:05,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2021-10-07 14:55:05,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 672. [2021-10-07 14:55:05,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 659 states have (on average 3.159332321699545) internal successors, (2082), 671 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:05,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 2082 transitions. [2021-10-07 14:55:05,648 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 2082 transitions. Word has length 13 [2021-10-07 14:55:05,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:05,649 INFO L470 AbstractCegarLoop]: Abstraction has 672 states and 2082 transitions. [2021-10-07 14:55:05,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:05,649 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 2082 transitions. [2021-10-07 14:55:05,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 14:55:05,650 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:05,650 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:05,694 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 [2021-10-07 14:55:05,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:05,864 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-07 14:55:05,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:05,865 INFO L82 PathProgramCache]: Analyzing trace with hash 676526275, now seen corresponding path program 1 times [2021-10-07 14:55:05,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:05,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070590084] [2021-10-07 14:55:05,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:05,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:05,960 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:55:05,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:05,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070590084] [2021-10-07 14:55:05,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070590084] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:05,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384670091] [2021-10-07 14:55:05,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:05,961 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:05,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:05,962 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) [2021-10-07 14:55:05,984 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 [2021-10-07 14:55:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:06,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 14:55:06,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:06,280 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:55:06,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384670091] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:06,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:55:06,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7] total 11 [2021-10-07 14:55:06,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263836694] [2021-10-07 14:55:06,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:55:06,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:06,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:55:06,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:55:06,283 INFO L87 Difference]: Start difference. First operand 672 states and 2082 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:06,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:06,519 INFO L93 Difference]: Finished difference Result 1360 states and 4042 transitions. [2021-10-07 14:55:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 14:55:06,520 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-07 14:55:06,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:06,532 INFO L225 Difference]: With dead ends: 1360 [2021-10-07 14:55:06,532 INFO L226 Difference]: Without dead ends: 1318 [2021-10-07 14:55:06,533 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 113.7ms TimeCoverageRelationStatistics Valid=73, Invalid=109, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:55:06,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2021-10-07 14:55:06,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 984. [2021-10-07 14:55:06,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 971 states have (on average 3.2605561277033988) internal successors, (3166), 983 states have internal predecessors, (3166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:06,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 3166 transitions. [2021-10-07 14:55:06,579 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 3166 transitions. Word has length 13 [2021-10-07 14:55:06,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:06,579 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 3166 transitions. [2021-10-07 14:55:06,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:06,579 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 3166 transitions. [2021-10-07 14:55:06,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 14:55:06,581 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:06,581 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:06,620 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 [2021-10-07 14:55:06,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:06,795 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-07 14:55:06,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:06,796 INFO L82 PathProgramCache]: Analyzing trace with hash 685998365, now seen corresponding path program 2 times [2021-10-07 14:55:06,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:06,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504788255] [2021-10-07 14:55:06,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:06,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:06,931 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:55:06,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:06,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504788255] [2021-10-07 14:55:06,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504788255] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:06,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920489065] [2021-10-07 14:55:06,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:55:06,932 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:06,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:06,933 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) [2021-10-07 14:55:06,953 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 [2021-10-07 14:55:07,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 14:55:07,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:55:07,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 14:55:07,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:07,330 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:55:07,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920489065] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:07,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:55:07,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-07 14:55:07,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920641348] [2021-10-07 14:55:07,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 14:55:07,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:07,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 14:55:07,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2021-10-07 14:55:07,332 INFO L87 Difference]: Start difference. First operand 984 states and 3166 transitions. Second operand has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:07,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:07,612 INFO L93 Difference]: Finished difference Result 2356 states and 7326 transitions. [2021-10-07 14:55:07,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 14:55:07,613 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 14 [2021-10-07 14:55:07,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:07,625 INFO L225 Difference]: With dead ends: 2356 [2021-10-07 14:55:07,625 INFO L226 Difference]: Without dead ends: 2244 [2021-10-07 14:55:07,626 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 139.2ms TimeCoverageRelationStatistics Valid=128, Invalid=214, Unknown=0, NotChecked=0, Total=342 [2021-10-07 14:55:07,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2244 states. [2021-10-07 14:55:07,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2244 to 1610. [2021-10-07 14:55:07,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1610 states, 1597 states have (on average 3.231684408265498) internal successors, (5161), 1609 states have internal predecessors, (5161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:07,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 5161 transitions. [2021-10-07 14:55:07,697 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 5161 transitions. Word has length 14 [2021-10-07 14:55:07,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:07,698 INFO L470 AbstractCegarLoop]: Abstraction has 1610 states and 5161 transitions. [2021-10-07 14:55:07,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:07,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 5161 transitions. [2021-10-07 14:55:07,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 14:55:07,700 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:07,700 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:07,739 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 [2021-10-07 14:55:07,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:07,914 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-07 14:55:07,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:07,914 INFO L82 PathProgramCache]: Analyzing trace with hash 57838857, now seen corresponding path program 2 times [2021-10-07 14:55:07,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:07,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861616716] [2021-10-07 14:55:07,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:07,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:08,055 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:55:08,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:08,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861616716] [2021-10-07 14:55:08,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861616716] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:08,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176602256] [2021-10-07 14:55:08,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:55:08,056 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:08,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:08,057 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) [2021-10-07 14:55:08,081 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 [2021-10-07 14:55:08,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 14:55:08,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:55:08,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 14:55:08,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:08,446 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:55:08,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176602256] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:08,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:55:08,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-07 14:55:08,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465030288] [2021-10-07 14:55:08,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 14:55:08,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:08,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 14:55:08,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-07 14:55:08,449 INFO L87 Difference]: Start difference. First operand 1610 states and 5161 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:08,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:08,822 INFO L93 Difference]: Finished difference Result 2016 states and 5939 transitions. [2021-10-07 14:55:08,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 14:55:08,822 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 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 14 [2021-10-07 14:55:08,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:08,832 INFO L225 Difference]: With dead ends: 2016 [2021-10-07 14:55:08,832 INFO L226 Difference]: Without dead ends: 1956 [2021-10-07 14:55:08,832 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 210.7ms TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2021-10-07 14:55:08,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2021-10-07 14:55:08,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 606. [2021-10-07 14:55:08,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 598 states have (on average 2.8244147157190636) internal successors, (1689), 605 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:08,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 1689 transitions. [2021-10-07 14:55:08,872 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 1689 transitions. Word has length 14 [2021-10-07 14:55:08,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:08,872 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 1689 transitions. [2021-10-07 14:55:08,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:08,872 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 1689 transitions. [2021-10-07 14:55:08,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 14:55:08,874 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:08,874 INFO L512 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:08,912 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 [2021-10-07 14:55:09,087 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,SelfDestructingSolverStorable21 [2021-10-07 14:55:09,088 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-07 14:55:09,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:09,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1265065301, now seen corresponding path program 1 times [2021-10-07 14:55:09,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:09,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951041367] [2021-10-07 14:55:09,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:09,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:09,135 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-07 14:55:09,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:09,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951041367] [2021-10-07 14:55:09,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951041367] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:09,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:09,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-07 14:55:09,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658416936] [2021-10-07 14:55:09,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:55:09,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:09,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:55:09,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:55:09,138 INFO L87 Difference]: Start difference. First operand 606 states and 1689 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:09,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:09,166 INFO L93 Difference]: Finished difference Result 646 states and 1771 transitions. [2021-10-07 14:55:09,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:55:09,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 14:55:09,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:09,170 INFO L225 Difference]: With dead ends: 646 [2021-10-07 14:55:09,170 INFO L226 Difference]: Without dead ends: 646 [2021-10-07 14:55:09,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:55:09,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-10-07 14:55:09,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 574. [2021-10-07 14:55:09,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 569 states have (on average 2.803163444639719) internal successors, (1595), 573 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:09,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 1595 transitions. [2021-10-07 14:55:09,190 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 1595 transitions. Word has length 16 [2021-10-07 14:55:09,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:09,190 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 1595 transitions. [2021-10-07 14:55:09,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:09,191 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 1595 transitions. [2021-10-07 14:55:09,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 14:55:09,192 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:09,193 INFO L512 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:09,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-07 14:55:09,193 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-07 14:55:09,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:09,194 INFO L82 PathProgramCache]: Analyzing trace with hash 562318643, now seen corresponding path program 1 times [2021-10-07 14:55:09,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:09,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459019340] [2021-10-07 14:55:09,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:09,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:09,453 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:55:09,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:09,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459019340] [2021-10-07 14:55:09,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459019340] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:09,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369951443] [2021-10-07 14:55:09,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:09,454 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:09,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:09,455 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) [2021-10-07 14:55:09,457 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 [2021-10-07 14:55:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:09,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 14:55:09,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:55:09,985 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 14:55:09,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369951443] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:55:09,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:55:09,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 19 [2021-10-07 14:55:09,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405730354] [2021-10-07 14:55:09,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 14:55:09,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:09,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 14:55:09,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=223, Unknown=0, NotChecked=0, Total=380 [2021-10-07 14:55:09,987 INFO L87 Difference]: Start difference. First operand 574 states and 1595 transitions. Second operand has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:10,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:10,213 INFO L93 Difference]: Finished difference Result 986 states and 2698 transitions. [2021-10-07 14:55:10,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 14:55:10,213 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 14:55:10,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:10,214 INFO L225 Difference]: With dead ends: 986 [2021-10-07 14:55:10,214 INFO L226 Difference]: Without dead ends: 0 [2021-10-07 14:55:10,214 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 267.6ms TimeCoverageRelationStatistics Valid=195, Invalid=267, Unknown=0, NotChecked=0, Total=462 [2021-10-07 14:55:10,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-07 14:55:10,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-07 14:55:10,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:10,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-07 14:55:10,215 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-10-07 14:55:10,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:10,215 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-07 14:55:10,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:10,216 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-07 14:55:10,216 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-07 14:55:10,219 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:10,220 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:10,220 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:10,220 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:10,220 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:10,220 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:10,220 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:10,221 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:10,221 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 14:55:10,221 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 14:55:10,221 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:10,221 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:10,221 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:10,222 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:10,222 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:10,222 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:10,222 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:10,222 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:10,261 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 [2021-10-07 14:55:10,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:55:10,431 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 14:55:10,431 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 14:55:10,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 02:55:10 BasicIcfg [2021-10-07 14:55:10,434 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 14:55:10,435 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-07 14:55:10,435 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-07 14:55:10,435 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-07 14:55:10,436 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:54:49" (3/4) ... [2021-10-07 14:55:10,439 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-07 14:55:10,445 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-07 14:55:10,445 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-07 14:55:10,450 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-07 14:55:10,450 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-07 14:55:10,450 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-07 14:55:10,451 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-07 14:55:10,487 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/weaver/parallel-misc-3.wvr.c-witness.graphml [2021-10-07 14:55:10,487 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-07 14:55:10,489 INFO L168 Benchmark]: Toolchain (without parser) took 22149.02 ms. Allocated memory was 178.3 MB in the beginning and 260.0 MB in the end (delta: 81.8 MB). Free memory was 153.7 MB in the beginning and 189.6 MB in the end (delta: -35.9 MB). Peak memory consumption was 46.8 MB. Max. memory is 8.0 GB. [2021-10-07 14:55:10,489 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 178.3 MB. Free memory is still 153.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 14:55:10,490 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.72 ms. Allocated memory is still 178.3 MB. Free memory was 153.3 MB in the beginning and 143.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-07 14:55:10,490 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.77 ms. Allocated memory is still 178.3 MB. Free memory was 143.2 MB in the beginning and 141.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 14:55:10,490 INFO L168 Benchmark]: Boogie Preprocessor took 29.87 ms. Allocated memory is still 178.3 MB. Free memory was 141.6 MB in the beginning and 140.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 14:55:10,491 INFO L168 Benchmark]: RCFGBuilder took 678.21 ms. Allocated memory is still 178.3 MB. Free memory was 140.4 MB in the beginning and 125.2 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-10-07 14:55:10,491 INFO L168 Benchmark]: TraceAbstraction took 21051.49 ms. Allocated memory was 178.3 MB in the beginning and 260.0 MB in the end (delta: 81.8 MB). Free memory was 124.8 MB in the beginning and 191.7 MB in the end (delta: -66.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 8.0 GB. [2021-10-07 14:55:10,491 INFO L168 Benchmark]: Witness Printer took 52.34 ms. Allocated memory is still 260.0 MB. Free memory was 191.7 MB in the beginning and 189.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 14:55:10,493 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 178.3 MB. Free memory is still 153.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 283.72 ms. Allocated memory is still 178.3 MB. Free memory was 153.3 MB in the beginning and 143.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 38.77 ms. Allocated memory is still 178.3 MB. Free memory was 143.2 MB in the beginning and 141.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.87 ms. Allocated memory is still 178.3 MB. Free memory was 141.6 MB in the beginning and 140.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 678.21 ms. Allocated memory is still 178.3 MB. Free memory was 140.4 MB in the beginning and 125.2 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21051.49 ms. Allocated memory was 178.3 MB in the beginning and 260.0 MB in the end (delta: 81.8 MB). Free memory was 124.8 MB in the beginning and 191.7 MB in the end (delta: -66.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 8.0 GB. * Witness Printer took 52.34 ms. Allocated memory is still 260.0 MB. Free memory was 191.7 MB in the beginning and 189.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4410.4ms, 96 PlacesBefore, 30 PlacesAfterwards, 100 TransitionsBefore, 26 TransitionsAfterwards, 1728 CoEnabledTransitionPairs, 5 FixpointIterations, 34 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 9 ConcurrentYvCompositions, 8 ChoiceCompositions, 104 TotalNumberOfCompositions, 2156 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1909, positive: 1885, positive conditional: 0, positive unconditional: 1885, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1072, positive: 1053, positive conditional: 0, positive unconditional: 1053, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1072, positive: 1044, positive conditional: 0, positive unconditional: 1044, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 28, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 142, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 103, negative conditional: 0, negative unconditional: 103, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1909, positive: 832, positive conditional: 0, positive unconditional: 832, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 1072, unknown conditional: 0, unknown unconditional: 1072] , Statistics on independence cache: Total cache size (in pairs): 68, Positive cache size: 64, Positive conditional cache size: 0, Positive unconditional cache size: 64, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 45]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 45]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 68]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 68]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 130 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 20838.9ms, OverallIterations: 24, TraceHistogramMax: 8, EmptinessCheckTime: 39.5ms, AutomataDifference: 4722.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4502.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 557 SDtfs, 1841 SDslu, 1907 SDs, 0 SdLazy, 2599 SolverSat, 880 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2549.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 328 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 1877.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1610occurred in iteration=21, InterpolantAutomatonStates: 216, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 779.3ms AutomataMinimizationTime, 24 MinimizatonAttempts, 6500 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 168.2ms SsaConstructionTime, 763.0ms SatisfiabilityAnalysisTime, 4448.3ms InterpolantComputationTime, 417 NumberOfCodeBlocks, 417 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 376 ConstructedInterpolants, 0 QuantifiedInterpolants, 2510 SizeOfPredicates, 24 NumberOfNonLiveVariables, 1447 ConjunctsInSsa, 211 ConjunctsInUnsatCore, 41 InterpolantComputations, 7 PerfectInterpolantSequences, 115/291 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-07 14:55:10,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...