/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/popl20/nonblocking-cntr-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 16:22:13,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 16:22:13,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 16:22:13,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 16:22:13,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 16:22:13,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 16:22:13,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 16:22:13,667 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-06 16:22:13,697 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 16:22:13,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 16:22:13,697 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 16:22:13,698 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 16:22:13,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 16:22:13,702 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 16:22:13,702 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 16:22:13,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 16:22:13,703 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 16:22:13,703 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 16:22:13,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 16:22:13,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 16:22:13,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 16:22:13,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-06 16:22:13,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 16:22:13,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-06 16:22:13,705 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-06 16:22:13,705 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 16:22:13,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-06 16:22:13,705 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 16:22:13,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-06 16:22:13,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 16:22:13,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 16:22:13,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 16:22:13,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 16:22:13,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 16:22:13,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 16:22:13,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-06 16:22:13,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-06 16:22:13,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-06 16:22:13,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-06 16:22:13,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 16:22:13,709 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 16:22:14,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 16:22:14,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 16:22:14,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 16:22:14,114 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 16:22:14,115 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 16:22:14,116 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20/nonblocking-cntr-alt.wvr.c [2021-10-06 16:22:14,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/828defcaf/50350de9b2ae40a980fb10f8693421b7/FLAG49498becc [2021-10-06 16:22:14,901 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 16:22:14,902 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20/nonblocking-cntr-alt.wvr.c [2021-10-06 16:22:14,910 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/828defcaf/50350de9b2ae40a980fb10f8693421b7/FLAG49498becc [2021-10-06 16:22:15,246 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/828defcaf/50350de9b2ae40a980fb10f8693421b7 [2021-10-06 16:22:15,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 16:22:15,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-06 16:22:15,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 16:22:15,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 16:22:15,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 16:22:15,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 04:22:15" (1/1) ... [2021-10-06 16:22:15,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3228b66a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:22:15, skipping insertion in model container [2021-10-06 16:22:15,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 04:22:15" (1/1) ... [2021-10-06 16:22:15,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 16:22:15,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 16:22:15,451 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/popl20/nonblocking-cntr-alt.wvr.c[2046,2059] [2021-10-06 16:22:15,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 16:22:15,461 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 16:22:15,481 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/popl20/nonblocking-cntr-alt.wvr.c[2046,2059] [2021-10-06 16:22:15,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 16:22:15,497 INFO L208 MainTranslator]: Completed translation [2021-10-06 16:22:15,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:22:15 WrapperNode [2021-10-06 16:22:15,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 16:22:15,501 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 16:22:15,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 16:22:15,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 16:22:15,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:22:15" (1/1) ... [2021-10-06 16:22:15,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:22:15" (1/1) ... [2021-10-06 16:22:15,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 16:22:15,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 16:22:15,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 16:22:15,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 16:22:15,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:22:15" (1/1) ... [2021-10-06 16:22:15,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:22:15" (1/1) ... [2021-10-06 16:22:15,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:22:15" (1/1) ... [2021-10-06 16:22:15,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:22:15" (1/1) ... [2021-10-06 16:22:15,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:22:15" (1/1) ... [2021-10-06 16:22:15,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:22:15" (1/1) ... [2021-10-06 16:22:15,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:22:15" (1/1) ... [2021-10-06 16:22:15,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 16:22:15,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 16:22:15,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 16:22:15,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 16:22:15,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:22:15" (1/1) ... [2021-10-06 16:22:15,586 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 16:22:15,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:15,622 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-06 16:22:15,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-06 16:22:15,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 16:22:15,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 16:22:15,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 16:22:15,689 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 16:22:15,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-06 16:22:15,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 16:22:15,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-06 16:22:15,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 16:22:15,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 16:22:15,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 16:22:15,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 16:22:15,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-06 16:22:15,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 16:22:15,692 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 16:22:16,280 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 16:22:16,281 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-06 16:22:16,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 04:22:16 BoogieIcfgContainer [2021-10-06 16:22:16,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 16:22:16,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 16:22:16,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 16:22:16,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 16:22:16,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 04:22:15" (1/3) ... [2021-10-06 16:22:16,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c9fca3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 04:22:16, skipping insertion in model container [2021-10-06 16:22:16,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:22:15" (2/3) ... [2021-10-06 16:22:16,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c9fca3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 04:22:16, skipping insertion in model container [2021-10-06 16:22:16,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 04:22:16" (3/3) ... [2021-10-06 16:22:16,293 INFO L111 eAbstractionObserver]: Analyzing ICFG nonblocking-cntr-alt.wvr.c [2021-10-06 16:22:16,298 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-06 16:22:16,299 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 16:22:16,299 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-06 16:22:16,299 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 16:22:16,329 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,330 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,330 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,331 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,331 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,331 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,331 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,332 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,332 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,332 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,332 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,333 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,333 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,333 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,333 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,333 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,334 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,334 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,334 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,334 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,334 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,335 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,335 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,335 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,335 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,336 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,336 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,336 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,336 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,336 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,337 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,337 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,338 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,338 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,338 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,338 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,339 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,339 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,339 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,339 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,339 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,340 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,340 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,340 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,340 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,340 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,341 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,341 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,341 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,341 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,341 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,342 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,342 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,342 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,342 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,342 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,343 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,343 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,343 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,343 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,343 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,344 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,344 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,344 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,348 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,348 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,348 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,348 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,349 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,351 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,351 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,351 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,352 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,352 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:22:16,358 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-06 16:22:16,413 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 16:22:16,421 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 [2021-10-06 16:22:16,422 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-10-06 16:22:16,438 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 16:22:16,450 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 86 transitions, 188 flow [2021-10-06 16:22:16,453 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 86 transitions, 188 flow [2021-10-06 16:22:16,455 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 86 transitions, 188 flow [2021-10-06 16:22:16,504 INFO L129 PetriNetUnfolder]: 6/84 cut-off events. [2021-10-06 16:22:16,504 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-06 16:22:16,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 6/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 75 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2021-10-06 16:22:16,511 INFO L116 LiptonReduction]: Number of co-enabled transitions 690 [2021-10-06 16:22:19,959 INFO L131 LiptonReduction]: Checked pairs total: 922 [2021-10-06 16:22:19,959 INFO L133 LiptonReduction]: Total number of compositions: 83 [2021-10-06 16:22:19,971 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 27 transitions, 70 flow [2021-10-06 16:22:19,996 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 131 states, 105 states have (on average 2.914285714285714) internal successors, (306), 130 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:19,998 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 105 states have (on average 2.914285714285714) internal successors, (306), 130 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:20,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-06 16:22:20,004 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:20,004 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-06 16:22:20,005 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:20,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:20,010 INFO L82 PathProgramCache]: Analyzing trace with hash 11643489, now seen corresponding path program 1 times [2021-10-06 16:22:20,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:20,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148961021] [2021-10-06 16:22:20,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:20,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:20,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:20,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:20,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148961021] [2021-10-06 16:22:20,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148961021] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:22:20,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:22:20,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-06 16:22:20,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067108017] [2021-10-06 16:22:20,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:22:20,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:20,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:22:20,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:22:20,253 INFO L87 Difference]: Start difference. First operand has 131 states, 105 states have (on average 2.914285714285714) internal successors, (306), 130 states have internal predecessors, (306), 0 states have call successors, (0), 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 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:20,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:20,296 INFO L93 Difference]: Finished difference Result 186 states and 430 transitions. [2021-10-06 16:22:20,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:22:20,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-06 16:22:20,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:20,312 INFO L225 Difference]: With dead ends: 186 [2021-10-06 16:22:20,312 INFO L226 Difference]: Without dead ends: 186 [2021-10-06 16:22:20,313 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:22:20,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-10-06 16:22:20,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 129. [2021-10-06 16:22:20,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 108 states have (on average 3.175925925925926) internal successors, (343), 128 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:20,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 343 transitions. [2021-10-06 16:22:20,370 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 343 transitions. Word has length 4 [2021-10-06 16:22:20,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:20,371 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 343 transitions. [2021-10-06 16:22:20,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:20,371 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 343 transitions. [2021-10-06 16:22:20,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-06 16:22:20,372 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:20,372 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-06 16:22:20,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-06 16:22:20,373 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:20,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:20,373 INFO L82 PathProgramCache]: Analyzing trace with hash 11643452, now seen corresponding path program 1 times [2021-10-06 16:22:20,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:20,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473575231] [2021-10-06 16:22:20,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:20,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:20,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:20,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:20,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473575231] [2021-10-06 16:22:20,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473575231] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:22:20,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:22:20,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-06 16:22:20,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129991472] [2021-10-06 16:22:20,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:22:20,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:20,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:22:20,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:22:20,416 INFO L87 Difference]: Start difference. First operand 129 states and 343 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:20,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:20,442 INFO L93 Difference]: Finished difference Result 134 states and 305 transitions. [2021-10-06 16:22:20,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:22:20,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-06 16:22:20,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:20,444 INFO L225 Difference]: With dead ends: 134 [2021-10-06 16:22:20,445 INFO L226 Difference]: Without dead ends: 134 [2021-10-06 16:22:20,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:22:20,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-06 16:22:20,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 127. [2021-10-06 16:22:20,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 106 states have (on average 2.8207547169811322) internal successors, (299), 126 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:20,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 299 transitions. [2021-10-06 16:22:20,458 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 299 transitions. Word has length 4 [2021-10-06 16:22:20,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:20,459 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 299 transitions. [2021-10-06 16:22:20,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:20,459 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 299 transitions. [2021-10-06 16:22:20,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 16:22:20,460 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:20,460 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 16:22:20,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-06 16:22:20,461 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:20,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:20,461 INFO L82 PathProgramCache]: Analyzing trace with hash 360949164, now seen corresponding path program 1 times [2021-10-06 16:22:20,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:20,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001192106] [2021-10-06 16:22:20,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:20,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:20,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:20,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:20,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001192106] [2021-10-06 16:22:20,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001192106] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:20,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062545909] [2021-10-06 16:22:20,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:20,541 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:20,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:20,549 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) [2021-10-06 16:22:20,555 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 [2021-10-06 16:22:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:20,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 16:22:20,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:20,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:20,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062545909] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:20,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:20,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-06 16:22:20,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105947702] [2021-10-06 16:22:20,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 16:22:20,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:20,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 16:22:20,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 16:22:20,666 INFO L87 Difference]: Start difference. First operand 127 states and 299 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:20,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:20,737 INFO L93 Difference]: Finished difference Result 205 states and 482 transitions. [2021-10-06 16:22:20,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 16:22:20,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 16:22:20,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:20,747 INFO L225 Difference]: With dead ends: 205 [2021-10-06 16:22:20,747 INFO L226 Difference]: Without dead ends: 205 [2021-10-06 16:22:20,747 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 16:22:20,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-10-06 16:22:20,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 141. [2021-10-06 16:22:20,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 120 states have (on average 3.2416666666666667) internal successors, (389), 140 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:20,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 389 transitions. [2021-10-06 16:22:20,775 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 389 transitions. Word has length 5 [2021-10-06 16:22:20,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:20,775 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 389 transitions. [2021-10-06 16:22:20,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:20,776 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 389 transitions. [2021-10-06 16:22:20,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 16:22:20,776 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:20,776 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 16:22:20,820 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 [2021-10-06 16:22:20,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:20,991 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:20,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:20,993 INFO L82 PathProgramCache]: Analyzing trace with hash 360949174, now seen corresponding path program 1 times [2021-10-06 16:22:20,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:20,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369802060] [2021-10-06 16:22:20,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:20,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:21,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:21,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:21,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369802060] [2021-10-06 16:22:21,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369802060] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:22:21,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:22:21,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-06 16:22:21,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789420867] [2021-10-06 16:22:21,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:22:21,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:21,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:22:21,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:22:21,039 INFO L87 Difference]: Start difference. First operand 141 states and 389 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:21,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:21,055 INFO L93 Difference]: Finished difference Result 127 states and 341 transitions. [2021-10-06 16:22:21,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:22:21,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 16:22:21,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:21,059 INFO L225 Difference]: With dead ends: 127 [2021-10-06 16:22:21,060 INFO L226 Difference]: Without dead ends: 127 [2021-10-06 16:22:21,060 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:22:21,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-06 16:22:21,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-10-06 16:22:21,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 110 states have (on average 3.1) internal successors, (341), 126 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:21,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 341 transitions. [2021-10-06 16:22:21,084 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 341 transitions. Word has length 5 [2021-10-06 16:22:21,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:21,084 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 341 transitions. [2021-10-06 16:22:21,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:21,085 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 341 transitions. [2021-10-06 16:22:21,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 16:22:21,087 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:21,087 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 16:22:21,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-06 16:22:21,088 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:21,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:21,089 INFO L82 PathProgramCache]: Analyzing trace with hash 360949127, now seen corresponding path program 1 times [2021-10-06 16:22:21,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:21,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89924841] [2021-10-06 16:22:21,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:21,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:21,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:21,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:21,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89924841] [2021-10-06 16:22:21,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89924841] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:21,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463200873] [2021-10-06 16:22:21,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:21,164 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:21,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:21,165 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) [2021-10-06 16:22:21,167 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 [2021-10-06 16:22:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:21,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 16:22:21,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:21,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:21,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463200873] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:21,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:21,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-06 16:22:21,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529949905] [2021-10-06 16:22:21,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 16:22:21,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:21,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 16:22:21,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 16:22:21,236 INFO L87 Difference]: Start difference. First operand 127 states and 341 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:21,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:21,300 INFO L93 Difference]: Finished difference Result 212 states and 495 transitions. [2021-10-06 16:22:21,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 16:22:21,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 16:22:21,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:21,304 INFO L225 Difference]: With dead ends: 212 [2021-10-06 16:22:21,304 INFO L226 Difference]: Without dead ends: 212 [2021-10-06 16:22:21,304 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 16:22:21,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-10-06 16:22:21,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 159. [2021-10-06 16:22:21,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 142 states have (on average 3.1549295774647885) internal successors, (448), 158 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:21,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 448 transitions. [2021-10-06 16:22:21,336 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 448 transitions. Word has length 5 [2021-10-06 16:22:21,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:21,337 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 448 transitions. [2021-10-06 16:22:21,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:21,337 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 448 transitions. [2021-10-06 16:22:21,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 16:22:21,338 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:21,338 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 16:22:21,366 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 [2021-10-06 16:22:21,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:21,542 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:21,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:21,543 INFO L82 PathProgramCache]: Analyzing trace with hash 360949128, now seen corresponding path program 1 times [2021-10-06 16:22:21,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:21,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925904896] [2021-10-06 16:22:21,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:21,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:21,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:21,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:21,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925904896] [2021-10-06 16:22:21,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925904896] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:22:21,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:22:21,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-06 16:22:21,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362254606] [2021-10-06 16:22:21,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:22:21,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:21,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:22:21,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:22:21,594 INFO L87 Difference]: Start difference. First operand 159 states and 448 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:21,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:21,608 INFO L93 Difference]: Finished difference Result 145 states and 396 transitions. [2021-10-06 16:22:21,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:22:21,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 16:22:21,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:21,610 INFO L225 Difference]: With dead ends: 145 [2021-10-06 16:22:21,610 INFO L226 Difference]: Without dead ends: 145 [2021-10-06 16:22:21,611 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:22:21,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-06 16:22:21,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-06 16:22:21,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 132 states have (on average 3.0) internal successors, (396), 144 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:21,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 396 transitions. [2021-10-06 16:22:21,619 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 396 transitions. Word has length 5 [2021-10-06 16:22:21,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:21,620 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 396 transitions. [2021-10-06 16:22:21,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:21,620 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 396 transitions. [2021-10-06 16:22:21,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-06 16:22:21,621 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:21,621 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2021-10-06 16:22:21,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-06 16:22:21,621 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:21,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:21,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1695476799, now seen corresponding path program 2 times [2021-10-06 16:22:21,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:21,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453114557] [2021-10-06 16:22:21,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:21,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:21,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:21,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:21,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453114557] [2021-10-06 16:22:21,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453114557] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:21,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105266033] [2021-10-06 16:22:21,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:22:21,665 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:21,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:21,666 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) [2021-10-06 16:22:21,680 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 [2021-10-06 16:22:21,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 16:22:21,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:21,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 16:22:21,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:21,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 16:22:21,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105266033] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:22:21,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 16:22:21,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2021-10-06 16:22:21,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369117032] [2021-10-06 16:22:21,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:22:21,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:21,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:22:21,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-06 16:22:21,752 INFO L87 Difference]: Start difference. First operand 145 states and 396 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:21,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:21,763 INFO L93 Difference]: Finished difference Result 127 states and 332 transitions. [2021-10-06 16:22:21,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:22:21,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-06 16:22:21,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:21,769 INFO L225 Difference]: With dead ends: 127 [2021-10-06 16:22:21,769 INFO L226 Difference]: Without dead ends: 127 [2021-10-06 16:22:21,769 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-06 16:22:21,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-06 16:22:21,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 111. [2021-10-06 16:22:21,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 102 states have (on average 2.7058823529411766) internal successors, (276), 110 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:21,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 276 transitions. [2021-10-06 16:22:21,788 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 276 transitions. Word has length 6 [2021-10-06 16:22:21,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:21,790 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 276 transitions. [2021-10-06 16:22:21,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:21,791 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 276 transitions. [2021-10-06 16:22:21,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-06 16:22:21,792 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:21,792 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2021-10-06 16:22:21,832 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 [2021-10-06 16:22:22,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:22,006 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:22,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:22,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1695476836, now seen corresponding path program 2 times [2021-10-06 16:22:22,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:22,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987508313] [2021-10-06 16:22:22,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:22,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:22,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:22,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:22,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987508313] [2021-10-06 16:22:22,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987508313] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:22,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673154099] [2021-10-06 16:22:22,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:22:22,063 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:22,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:22,067 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) [2021-10-06 16:22:22,069 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 [2021-10-06 16:22:22,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:22:22,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:22,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 16:22:22,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:22,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:22,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673154099] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:22,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:22,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-06 16:22:22,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25930405] [2021-10-06 16:22:22,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 16:22:22,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:22,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 16:22:22,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-06 16:22:22,148 INFO L87 Difference]: Start difference. First operand 111 states and 276 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:22,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:22,192 INFO L93 Difference]: Finished difference Result 217 states and 494 transitions. [2021-10-06 16:22:22,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 16:22:22,193 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-06 16:22:22,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:22,195 INFO L225 Difference]: With dead ends: 217 [2021-10-06 16:22:22,195 INFO L226 Difference]: Without dead ends: 217 [2021-10-06 16:22:22,196 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 18.4ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-06 16:22:22,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-10-06 16:22:22,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 133. [2021-10-06 16:22:22,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 124 states have (on average 2.782258064516129) internal successors, (345), 132 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:22,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 345 transitions. [2021-10-06 16:22:22,207 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 345 transitions. Word has length 6 [2021-10-06 16:22:22,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:22,208 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 345 transitions. [2021-10-06 16:22:22,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:22,208 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 345 transitions. [2021-10-06 16:22:22,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 16:22:22,210 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:22,211 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2021-10-06 16:22:22,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-06 16:22:22,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:22,426 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:22,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:22,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1020172249, now seen corresponding path program 3 times [2021-10-06 16:22:22,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:22,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714677363] [2021-10-06 16:22:22,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:22,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:22,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:22,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714677363] [2021-10-06 16:22:22,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714677363] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:22,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439346532] [2021-10-06 16:22:22,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:22:22,480 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:22,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:22,492 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) [2021-10-06 16:22:22,522 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 [2021-10-06 16:22:22,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 16:22:22,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:22,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 16:22:22,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:22,608 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:22,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439346532] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:22,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:22,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-06 16:22:22,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434210622] [2021-10-06 16:22:22,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 16:22:22,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:22,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 16:22:22,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:22:22,618 INFO L87 Difference]: Start difference. First operand 133 states and 345 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) [2021-10-06 16:22:22,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:22,672 INFO L93 Difference]: Finished difference Result 266 states and 622 transitions. [2021-10-06 16:22:22,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 16:22:22,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 7 [2021-10-06 16:22:22,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:22,675 INFO L225 Difference]: With dead ends: 266 [2021-10-06 16:22:22,675 INFO L226 Difference]: Without dead ends: 266 [2021-10-06 16:22:22,676 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 19.4ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:22:22,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-10-06 16:22:22,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 155. [2021-10-06 16:22:22,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 146 states have (on average 2.835616438356164) internal successors, (414), 154 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:22,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 414 transitions. [2021-10-06 16:22:22,683 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 414 transitions. Word has length 7 [2021-10-06 16:22:22,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:22,684 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 414 transitions. [2021-10-06 16:22:22,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) [2021-10-06 16:22:22,684 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 414 transitions. [2021-10-06 16:22:22,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-06 16:22:22,685 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:22,685 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:22:22,723 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 [2021-10-06 16:22:22,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:22,899 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:22,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:22,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1167441471, now seen corresponding path program 1 times [2021-10-06 16:22:22,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:22,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574767087] [2021-10-06 16:22:22,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:22,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:22,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:22,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:22,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574767087] [2021-10-06 16:22:22,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574767087] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:22:22,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:22:22,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-06 16:22:22,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781046431] [2021-10-06 16:22:22,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:22:22,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:22,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:22:22,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:22:22,931 INFO L87 Difference]: Start difference. First operand 155 states and 414 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:22,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:22,963 INFO L93 Difference]: Finished difference Result 218 states and 584 transitions. [2021-10-06 16:22:22,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:22:22,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-06 16:22:22,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:22,966 INFO L225 Difference]: With dead ends: 218 [2021-10-06 16:22:22,966 INFO L226 Difference]: Without dead ends: 218 [2021-10-06 16:22:22,967 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:22:22,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-10-06 16:22:22,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 175. [2021-10-06 16:22:22,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 166 states have (on average 3.0421686746987953) internal successors, (505), 174 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:22,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 505 transitions. [2021-10-06 16:22:22,974 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 505 transitions. Word has length 8 [2021-10-06 16:22:22,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:22,975 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 505 transitions. [2021-10-06 16:22:22,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:22,975 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 505 transitions. [2021-10-06 16:22:22,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-06 16:22:22,976 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:22,976 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2021-10-06 16:22:22,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-06 16:22:22,976 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:22,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:22,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1560566532, now seen corresponding path program 4 times [2021-10-06 16:22:22,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:22,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237882134] [2021-10-06 16:22:22,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:22,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:23,025 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:23,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:23,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237882134] [2021-10-06 16:22:23,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237882134] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:23,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501717498] [2021-10-06 16:22:23,029 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:22:23,029 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:23,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:23,031 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) [2021-10-06 16:22:23,034 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 [2021-10-06 16:22:23,081 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:22:23,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:23,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 16:22:23,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:23,119 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:23,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501717498] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:23,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:23,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-06 16:22:23,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999578486] [2021-10-06 16:22:23,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 16:22:23,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:23,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 16:22:23,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-06 16:22:23,123 INFO L87 Difference]: Start difference. First operand 175 states and 505 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2021-10-06 16:22:23,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:23,197 INFO L93 Difference]: Finished difference Result 351 states and 881 transitions. [2021-10-06 16:22:23,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 16:22:23,197 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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 8 [2021-10-06 16:22:23,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:23,201 INFO L225 Difference]: With dead ends: 351 [2021-10-06 16:22:23,201 INFO L226 Difference]: Without dead ends: 351 [2021-10-06 16:22:23,202 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 18.6ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-06 16:22:23,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-10-06 16:22:23,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 203. [2021-10-06 16:22:23,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 194 states have (on average 3.0618556701030926) internal successors, (594), 202 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:23,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 594 transitions. [2021-10-06 16:22:23,222 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 594 transitions. Word has length 8 [2021-10-06 16:22:23,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:23,222 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 594 transitions. [2021-10-06 16:22:23,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2021-10-06 16:22:23,223 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 594 transitions. [2021-10-06 16:22:23,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 16:22:23,223 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:23,224 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:22:23,257 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 [2021-10-06 16:22:23,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-06 16:22:23,437 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:23,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:23,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1832484876, now seen corresponding path program 1 times [2021-10-06 16:22:23,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:23,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107681388] [2021-10-06 16:22:23,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:23,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:23,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:23,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:23,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107681388] [2021-10-06 16:22:23,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107681388] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:23,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233207978] [2021-10-06 16:22:23,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:23,509 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:23,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:23,514 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) [2021-10-06 16:22:23,532 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 [2021-10-06 16:22:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:23,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 16:22:23,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:23,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 16:22:23,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233207978] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:22:23,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 16:22:23,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-06 16:22:23,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847533571] [2021-10-06 16:22:23,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:22:23,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:23,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:22:23,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-06 16:22:23,611 INFO L87 Difference]: Start difference. First operand 203 states and 594 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2021-10-06 16:22:23,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:23,626 INFO L93 Difference]: Finished difference Result 185 states and 526 transitions. [2021-10-06 16:22:23,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:22:23,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 [2021-10-06 16:22:23,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:23,629 INFO L225 Difference]: With dead ends: 185 [2021-10-06 16:22:23,629 INFO L226 Difference]: Without dead ends: 185 [2021-10-06 16:22:23,629 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 13.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-06 16:22:23,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-10-06 16:22:23,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2021-10-06 16:22:23,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 178 states have (on average 2.955056179775281) internal successors, (526), 184 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:23,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 526 transitions. [2021-10-06 16:22:23,637 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 526 transitions. Word has length 9 [2021-10-06 16:22:23,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:23,637 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 526 transitions. [2021-10-06 16:22:23,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2021-10-06 16:22:23,637 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 526 transitions. [2021-10-06 16:22:23,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 16:22:23,641 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:23,641 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:22:23,678 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 [2021-10-06 16:22:23,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:23,855 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:23,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:23,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1832484877, now seen corresponding path program 1 times [2021-10-06 16:22:23,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:23,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653537028] [2021-10-06 16:22:23,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:23,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:23,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:23,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:23,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653537028] [2021-10-06 16:22:23,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653537028] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:23,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105171134] [2021-10-06 16:22:23,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:23,911 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:23,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:23,912 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) [2021-10-06 16:22:23,937 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 [2021-10-06 16:22:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:23,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 16:22:23,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:24,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:24,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105171134] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:24,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:24,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-06 16:22:24,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557378212] [2021-10-06 16:22:24,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 16:22:24,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:24,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 16:22:24,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:22:24,035 INFO L87 Difference]: Start difference. First operand 185 states and 526 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:24,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:24,059 INFO L93 Difference]: Finished difference Result 188 states and 498 transitions. [2021-10-06 16:22:24,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 16:22:24,059 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-06 16:22:24,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:24,061 INFO L225 Difference]: With dead ends: 188 [2021-10-06 16:22:24,061 INFO L226 Difference]: Without dead ends: 188 [2021-10-06 16:22:24,062 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 17.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:22:24,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-06 16:22:24,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 101. [2021-10-06 16:22:24,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 96 states have (on average 2.78125) internal successors, (267), 100 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:24,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 267 transitions. [2021-10-06 16:22:24,067 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 267 transitions. Word has length 9 [2021-10-06 16:22:24,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:24,067 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 267 transitions. [2021-10-06 16:22:24,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:24,067 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 267 transitions. [2021-10-06 16:22:24,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 16:22:24,068 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:24,068 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1] [2021-10-06 16:22:24,104 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 [2021-10-06 16:22:24,283 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,SelfDestructingSolverStorable12 [2021-10-06 16:22:24,284 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:24,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:24,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1132920121, now seen corresponding path program 5 times [2021-10-06 16:22:24,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:24,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894083513] [2021-10-06 16:22:24,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:24,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:24,337 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:24,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:24,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894083513] [2021-10-06 16:22:24,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894083513] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:24,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799870370] [2021-10-06 16:22:24,338 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:22:24,339 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:24,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:24,340 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) [2021-10-06 16:22:24,372 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 [2021-10-06 16:22:24,414 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 16:22:24,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:24,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 16:22:24,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:24,447 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:24,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799870370] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:24,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:24,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-06 16:22:24,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587311626] [2021-10-06 16:22:24,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 16:22:24,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:24,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 16:22:24,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:22:24,449 INFO L87 Difference]: Start difference. First operand 101 states and 267 transitions. Second operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 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) [2021-10-06 16:22:24,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:24,489 INFO L93 Difference]: Finished difference Result 256 states and 586 transitions. [2021-10-06 16:22:24,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 16:22:24,490 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 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 9 [2021-10-06 16:22:24,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:24,492 INFO L225 Difference]: With dead ends: 256 [2021-10-06 16:22:24,492 INFO L226 Difference]: Without dead ends: 256 [2021-10-06 16:22:24,492 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 23.0ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:22:24,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-06 16:22:24,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 109. [2021-10-06 16:22:24,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 104 states have (on average 2.826923076923077) internal successors, (294), 108 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:24,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 294 transitions. [2021-10-06 16:22:24,498 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 294 transitions. Word has length 9 [2021-10-06 16:22:24,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:24,498 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 294 transitions. [2021-10-06 16:22:24,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 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) [2021-10-06 16:22:24,499 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 294 transitions. [2021-10-06 16:22:24,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-06 16:22:24,499 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:24,499 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1] [2021-10-06 16:22:24,531 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 [2021-10-06 16:22:24,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:24,714 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:24,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:24,715 INFO L82 PathProgramCache]: Analyzing trace with hash -760783268, now seen corresponding path program 6 times [2021-10-06 16:22:24,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:24,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393752869] [2021-10-06 16:22:24,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:24,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:24,782 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:24,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:24,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393752869] [2021-10-06 16:22:24,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393752869] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:24,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414417022] [2021-10-06 16:22:24,783 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:22:24,783 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:24,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:24,784 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) [2021-10-06 16:22:24,816 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 [2021-10-06 16:22:24,863 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 16:22:24,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:24,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 16:22:24,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:24,909 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:24,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414417022] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:24,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:24,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-06 16:22:24,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084747025] [2021-10-06 16:22:24,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 16:22:24,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:24,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 16:22:24,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-06 16:22:24,912 INFO L87 Difference]: Start difference. First operand 109 states and 294 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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) [2021-10-06 16:22:24,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:24,960 INFO L93 Difference]: Finished difference Result 289 states and 664 transitions. [2021-10-06 16:22:24,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 16:22:24,961 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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 10 [2021-10-06 16:22:24,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:24,963 INFO L225 Difference]: With dead ends: 289 [2021-10-06 16:22:24,963 INFO L226 Difference]: Without dead ends: 289 [2021-10-06 16:22:24,965 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 29.0ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-06 16:22:24,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-10-06 16:22:24,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 117. [2021-10-06 16:22:24,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 112 states have (on average 2.8660714285714284) internal successors, (321), 116 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:24,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 321 transitions. [2021-10-06 16:22:24,973 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 321 transitions. Word has length 10 [2021-10-06 16:22:24,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:24,973 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 321 transitions. [2021-10-06 16:22:24,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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) [2021-10-06 16:22:24,973 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 321 transitions. [2021-10-06 16:22:24,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-06 16:22:24,974 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:24,974 INFO L512 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1] [2021-10-06 16:22:25,011 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 [2021-10-06 16:22:25,188 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,SelfDestructingSolverStorable14 [2021-10-06 16:22:25,189 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:25,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:25,190 INFO L82 PathProgramCache]: Analyzing trace with hash -2109442713, now seen corresponding path program 7 times [2021-10-06 16:22:25,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:25,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657336539] [2021-10-06 16:22:25,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:25,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:25,269 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:25,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:25,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657336539] [2021-10-06 16:22:25,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657336539] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:25,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704802008] [2021-10-06 16:22:25,270 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:22:25,271 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:25,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:25,272 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) [2021-10-06 16:22:25,273 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 [2021-10-06 16:22:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:25,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 16:22:25,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:25,401 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:25,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704802008] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:25,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:25,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-06 16:22:25,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284011946] [2021-10-06 16:22:25,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 16:22:25,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:25,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 16:22:25,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-06 16:22:25,405 INFO L87 Difference]: Start difference. First operand 117 states and 321 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:25,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:25,462 INFO L93 Difference]: Finished difference Result 322 states and 742 transitions. [2021-10-06 16:22:25,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 16:22:25,463 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-06 16:22:25,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:25,465 INFO L225 Difference]: With dead ends: 322 [2021-10-06 16:22:25,466 INFO L226 Difference]: Without dead ends: 322 [2021-10-06 16:22:25,466 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 38.3ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-06 16:22:25,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-10-06 16:22:25,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 125. [2021-10-06 16:22:25,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 2.9) internal successors, (348), 124 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:25,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 348 transitions. [2021-10-06 16:22:25,473 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 348 transitions. Word has length 11 [2021-10-06 16:22:25,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:25,473 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 348 transitions. [2021-10-06 16:22:25,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:25,474 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 348 transitions. [2021-10-06 16:22:25,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-06 16:22:25,474 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:25,475 INFO L512 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1] [2021-10-06 16:22:25,516 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 [2021-10-06 16:22:25,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:25,688 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:25,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:25,689 INFO L82 PathProgramCache]: Analyzing trace with hash -968212548, now seen corresponding path program 8 times [2021-10-06 16:22:25,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:25,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445499238] [2021-10-06 16:22:25,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:25,690 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:25,770 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:25,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:25,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445499238] [2021-10-06 16:22:25,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445499238] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:25,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957264294] [2021-10-06 16:22:25,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:22:25,771 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:25,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:25,772 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) [2021-10-06 16:22:25,785 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 [2021-10-06 16:22:25,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:22:25,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:25,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 16:22:25,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:25,899 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:25,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957264294] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:25,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:25,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-10-06 16:22:25,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714925527] [2021-10-06 16:22:25,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 16:22:25,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:25,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 16:22:25,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-06 16:22:25,901 INFO L87 Difference]: Start difference. First operand 125 states and 348 transitions. Second operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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) [2021-10-06 16:22:25,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:25,960 INFO L93 Difference]: Finished difference Result 355 states and 820 transitions. [2021-10-06 16:22:25,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 16:22:25,960 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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 12 [2021-10-06 16:22:25,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:25,963 INFO L225 Difference]: With dead ends: 355 [2021-10-06 16:22:25,963 INFO L226 Difference]: Without dead ends: 355 [2021-10-06 16:22:25,963 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 43.7ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-06 16:22:25,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2021-10-06 16:22:25,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 133. [2021-10-06 16:22:25,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 128 states have (on average 2.9296875) internal successors, (375), 132 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:25,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 375 transitions. [2021-10-06 16:22:25,970 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 375 transitions. Word has length 12 [2021-10-06 16:22:25,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:25,971 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 375 transitions. [2021-10-06 16:22:25,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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) [2021-10-06 16:22:25,971 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 375 transitions. [2021-10-06 16:22:25,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 16:22:25,971 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:25,972 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:22:26,009 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 [2021-10-06 16:22:26,186 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,SelfDestructingSolverStorable16 [2021-10-06 16:22:26,187 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:26,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:26,188 INFO L82 PathProgramCache]: Analyzing trace with hash 53761448, now seen corresponding path program 1 times [2021-10-06 16:22:26,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:26,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462936438] [2021-10-06 16:22:26,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:26,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:26,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:26,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:26,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462936438] [2021-10-06 16:22:26,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462936438] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:22:26,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:22:26,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-06 16:22:26,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227200744] [2021-10-06 16:22:26,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:22:26,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:26,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:22:26,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:22:26,274 INFO L87 Difference]: Start difference. First operand 133 states and 375 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 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) [2021-10-06 16:22:26,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:26,284 INFO L93 Difference]: Finished difference Result 132 states and 374 transitions. [2021-10-06 16:22:26,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:22:26,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 16:22:26,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:26,287 INFO L225 Difference]: With dead ends: 132 [2021-10-06 16:22:26,287 INFO L226 Difference]: Without dead ends: 132 [2021-10-06 16:22:26,287 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:22:26,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-06 16:22:26,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-10-06 16:22:26,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 128 states have (on average 2.921875) internal successors, (374), 131 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:26,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 374 transitions. [2021-10-06 16:22:26,292 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 374 transitions. Word has length 13 [2021-10-06 16:22:26,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:26,292 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 374 transitions. [2021-10-06 16:22:26,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 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) [2021-10-06 16:22:26,293 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 374 transitions. [2021-10-06 16:22:26,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 16:22:26,293 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:26,293 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:22:26,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-06 16:22:26,294 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:26,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:26,294 INFO L82 PathProgramCache]: Analyzing trace with hash 53761500, now seen corresponding path program 1 times [2021-10-06 16:22:26,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:26,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088005985] [2021-10-06 16:22:26,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:26,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:26,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:26,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:26,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088005985] [2021-10-06 16:22:26,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088005985] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:22:26,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:22:26,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-06 16:22:26,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670160763] [2021-10-06 16:22:26,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:22:26,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:26,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:22:26,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:22:26,373 INFO L87 Difference]: Start difference. First operand 132 states and 374 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 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) [2021-10-06 16:22:26,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:26,383 INFO L93 Difference]: Finished difference Result 131 states and 373 transitions. [2021-10-06 16:22:26,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:22:26,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 16:22:26,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:26,385 INFO L225 Difference]: With dead ends: 131 [2021-10-06 16:22:26,385 INFO L226 Difference]: Without dead ends: 116 [2021-10-06 16:22:26,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:22:26,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-06 16:22:26,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-10-06 16:22:26,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 113 states have (on average 2.398230088495575) internal successors, (271), 115 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:26,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 271 transitions. [2021-10-06 16:22:26,390 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 271 transitions. Word has length 13 [2021-10-06 16:22:26,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:26,391 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 271 transitions. [2021-10-06 16:22:26,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 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) [2021-10-06 16:22:26,391 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 271 transitions. [2021-10-06 16:22:26,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 16:22:26,392 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:26,392 INFO L512 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1] [2021-10-06 16:22:26,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-06 16:22:26,392 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:26,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:26,392 INFO L82 PathProgramCache]: Analyzing trace with hash 50184199, now seen corresponding path program 9 times [2021-10-06 16:22:26,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:26,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252035087] [2021-10-06 16:22:26,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:26,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:26,510 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:26,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:26,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252035087] [2021-10-06 16:22:26,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252035087] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:26,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546240779] [2021-10-06 16:22:26,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:22:26,511 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:26,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:26,512 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) [2021-10-06 16:22:26,516 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 [2021-10-06 16:22:26,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-06 16:22:26,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:26,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 16:22:26,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:26,642 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:26,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546240779] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:26,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:26,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-06 16:22:26,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231104884] [2021-10-06 16:22:26,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-06 16:22:26,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:26,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-06 16:22:26,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-06 16:22:26,645 INFO L87 Difference]: Start difference. First operand 116 states and 271 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:26,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:26,703 INFO L93 Difference]: Finished difference Result 210 states and 493 transitions. [2021-10-06 16:22:26,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-06 16:22:26,704 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 16:22:26,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:26,705 INFO L225 Difference]: With dead ends: 210 [2021-10-06 16:22:26,705 INFO L226 Difference]: Without dead ends: 164 [2021-10-06 16:22:26,706 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 51.2ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-06 16:22:26,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-06 16:22:26,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 124. [2021-10-06 16:22:26,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 2.396694214876033) internal successors, (290), 123 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:26,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 290 transitions. [2021-10-06 16:22:26,711 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 290 transitions. Word has length 13 [2021-10-06 16:22:26,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:26,711 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 290 transitions. [2021-10-06 16:22:26,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:26,711 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 290 transitions. [2021-10-06 16:22:26,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 16:22:26,712 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:26,712 INFO L512 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1] [2021-10-06 16:22:26,754 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 [2021-10-06 16:22:26,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-10-06 16:22:26,928 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:26,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:26,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1555712284, now seen corresponding path program 10 times [2021-10-06 16:22:26,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:26,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215426307] [2021-10-06 16:22:26,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:26,930 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:27,025 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:27,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:27,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215426307] [2021-10-06 16:22:27,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215426307] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:27,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506425518] [2021-10-06 16:22:27,026 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:22:27,026 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:27,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:27,028 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) [2021-10-06 16:22:27,045 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 [2021-10-06 16:22:27,108 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:22:27,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:27,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 16:22:27,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:27,160 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:27,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506425518] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:27,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:27,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-06 16:22:27,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016213043] [2021-10-06 16:22:27,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 16:22:27,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:27,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 16:22:27,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-06 16:22:27,162 INFO L87 Difference]: Start difference. First operand 124 states and 290 transitions. Second operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 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) [2021-10-06 16:22:27,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:27,228 INFO L93 Difference]: Finished difference Result 226 states and 531 transitions. [2021-10-06 16:22:27,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-06 16:22:27,229 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 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 14 [2021-10-06 16:22:27,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:27,230 INFO L225 Difference]: With dead ends: 226 [2021-10-06 16:22:27,231 INFO L226 Difference]: Without dead ends: 176 [2021-10-06 16:22:27,231 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 58.1ms TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-06 16:22:27,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-06 16:22:27,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 132. [2021-10-06 16:22:27,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 129 states have (on average 2.395348837209302) internal successors, (309), 131 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:27,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 309 transitions. [2021-10-06 16:22:27,256 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 309 transitions. Word has length 14 [2021-10-06 16:22:27,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:27,256 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 309 transitions. [2021-10-06 16:22:27,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 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) [2021-10-06 16:22:27,256 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 309 transitions. [2021-10-06 16:22:27,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 16:22:27,257 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:27,257 INFO L512 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1] [2021-10-06 16:22:27,295 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 [2021-10-06 16:22:27,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:27,470 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:27,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:27,471 INFO L82 PathProgramCache]: Analyzing trace with hash 982442663, now seen corresponding path program 11 times [2021-10-06 16:22:27,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:27,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741258305] [2021-10-06 16:22:27,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:27,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:27,587 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:27,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:27,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741258305] [2021-10-06 16:22:27,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741258305] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:27,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582645497] [2021-10-06 16:22:27,588 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:22:27,589 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:27,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:27,590 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) [2021-10-06 16:22:27,594 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 [2021-10-06 16:22:27,676 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-06 16:22:27,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:27,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 16:22:27,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:27,736 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:27,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582645497] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:27,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:27,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-06 16:22:27,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948018385] [2021-10-06 16:22:27,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 16:22:27,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:27,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 16:22:27,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-06 16:22:27,738 INFO L87 Difference]: Start difference. First operand 132 states and 309 transitions. Second operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:27,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:27,810 INFO L93 Difference]: Finished difference Result 242 states and 569 transitions. [2021-10-06 16:22:27,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 16:22:27,811 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 16:22:27,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:27,812 INFO L225 Difference]: With dead ends: 242 [2021-10-06 16:22:27,813 INFO L226 Difference]: Without dead ends: 188 [2021-10-06 16:22:27,814 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 74.4ms TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-06 16:22:27,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-06 16:22:27,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 140. [2021-10-06 16:22:27,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 137 states have (on average 2.394160583941606) internal successors, (328), 139 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:27,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 328 transitions. [2021-10-06 16:22:27,820 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 328 transitions. Word has length 15 [2021-10-06 16:22:27,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:27,820 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 328 transitions. [2021-10-06 16:22:27,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:27,821 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 328 transitions. [2021-10-06 16:22:27,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 16:22:27,822 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:27,822 INFO L512 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1] [2021-10-06 16:22:27,857 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 [2021-10-06 16:22:28,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:28,037 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:28,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:28,038 INFO L82 PathProgramCache]: Analyzing trace with hash 390953596, now seen corresponding path program 12 times [2021-10-06 16:22:28,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:28,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488351519] [2021-10-06 16:22:28,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:28,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:28,164 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:28,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:28,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488351519] [2021-10-06 16:22:28,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488351519] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:28,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346004555] [2021-10-06 16:22:28,165 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:22:28,165 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:28,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:28,166 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) [2021-10-06 16:22:28,174 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 [2021-10-06 16:22:28,265 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-06 16:22:28,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:28,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 16:22:28,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:28,318 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:28,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346004555] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:28,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:28,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-10-06 16:22:28,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266164565] [2021-10-06 16:22:28,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 16:22:28,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:28,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 16:22:28,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-06 16:22:28,320 INFO L87 Difference]: Start difference. First operand 140 states and 328 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 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) [2021-10-06 16:22:28,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:28,392 INFO L93 Difference]: Finished difference Result 258 states and 607 transitions. [2021-10-06 16:22:28,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 16:22:28,393 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 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 16 [2021-10-06 16:22:28,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:28,394 INFO L225 Difference]: With dead ends: 258 [2021-10-06 16:22:28,395 INFO L226 Difference]: Without dead ends: 200 [2021-10-06 16:22:28,395 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 81.0ms TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-06 16:22:28,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-10-06 16:22:28,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 148. [2021-10-06 16:22:28,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 145 states have (on average 2.393103448275862) internal successors, (347), 147 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:28,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 347 transitions. [2021-10-06 16:22:28,401 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 347 transitions. Word has length 16 [2021-10-06 16:22:28,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:28,401 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 347 transitions. [2021-10-06 16:22:28,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 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) [2021-10-06 16:22:28,401 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 347 transitions. [2021-10-06 16:22:28,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 16:22:28,402 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:28,402 INFO L512 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1] [2021-10-06 16:22:28,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-10-06 16:22:28,615 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,SelfDestructingSolverStorable22 [2021-10-06 16:22:28,616 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:28,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:28,616 INFO L82 PathProgramCache]: Analyzing trace with hash -765338297, now seen corresponding path program 13 times [2021-10-06 16:22:28,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:28,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660832401] [2021-10-06 16:22:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:28,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:28,756 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:28,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:28,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660832401] [2021-10-06 16:22:28,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660832401] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:28,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622099511] [2021-10-06 16:22:28,757 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:22:28,757 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:28,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:28,758 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) [2021-10-06 16:22:28,759 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 [2021-10-06 16:22:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:28,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 16:22:28,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:28,925 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:28,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622099511] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:28,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:28,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-06 16:22:28,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841197997] [2021-10-06 16:22:28,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 16:22:28,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:28,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 16:22:28,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-06 16:22:28,927 INFO L87 Difference]: Start difference. First operand 148 states and 347 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 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) [2021-10-06 16:22:29,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:29,004 INFO L93 Difference]: Finished difference Result 274 states and 645 transitions. [2021-10-06 16:22:29,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 16:22:29,004 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 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 17 [2021-10-06 16:22:29,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:29,006 INFO L225 Difference]: With dead ends: 274 [2021-10-06 16:22:29,006 INFO L226 Difference]: Without dead ends: 212 [2021-10-06 16:22:29,007 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 95.7ms TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-06 16:22:29,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-10-06 16:22:29,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 156. [2021-10-06 16:22:29,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 153 states have (on average 2.392156862745098) internal successors, (366), 155 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:29,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 366 transitions. [2021-10-06 16:22:29,013 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 366 transitions. Word has length 17 [2021-10-06 16:22:29,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:29,013 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 366 transitions. [2021-10-06 16:22:29,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 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) [2021-10-06 16:22:29,013 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 366 transitions. [2021-10-06 16:22:29,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 16:22:29,014 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:29,014 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1] [2021-10-06 16:22:29,054 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 [2021-10-06 16:22:29,227 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 [2021-10-06 16:22:29,228 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:29,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:29,228 INFO L82 PathProgramCache]: Analyzing trace with hash 2044318684, now seen corresponding path program 14 times [2021-10-06 16:22:29,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:29,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204422661] [2021-10-06 16:22:29,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:29,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:29,375 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:29,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:29,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204422661] [2021-10-06 16:22:29,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204422661] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:29,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233241688] [2021-10-06 16:22:29,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:22:29,376 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:29,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:29,377 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:29,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-06 16:22:29,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:22:29,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:29,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 16:22:29,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:29,533 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:29,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233241688] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:29,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:29,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-06 16:22:29,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032219046] [2021-10-06 16:22:29,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 16:22:29,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:29,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 16:22:29,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-06 16:22:29,535 INFO L87 Difference]: Start difference. First operand 156 states and 366 transitions. Second operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 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) [2021-10-06 16:22:29,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:29,629 INFO L93 Difference]: Finished difference Result 290 states and 683 transitions. [2021-10-06 16:22:29,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-06 16:22:29,630 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 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 18 [2021-10-06 16:22:29,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:29,633 INFO L225 Difference]: With dead ends: 290 [2021-10-06 16:22:29,633 INFO L226 Difference]: Without dead ends: 224 [2021-10-06 16:22:29,633 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 100.0ms TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-06 16:22:29,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-10-06 16:22:29,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 164. [2021-10-06 16:22:29,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 161 states have (on average 2.391304347826087) internal successors, (385), 163 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:29,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 385 transitions. [2021-10-06 16:22:29,648 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 385 transitions. Word has length 18 [2021-10-06 16:22:29,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:29,648 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 385 transitions. [2021-10-06 16:22:29,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 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) [2021-10-06 16:22:29,649 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 385 transitions. [2021-10-06 16:22:29,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 16:22:29,650 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:29,650 INFO L512 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1] [2021-10-06 16:22:29,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-06 16:22:29,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:29,865 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:29,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:29,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1050628121, now seen corresponding path program 15 times [2021-10-06 16:22:29,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:29,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93790538] [2021-10-06 16:22:29,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:29,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:30,039 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:30,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:30,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93790538] [2021-10-06 16:22:30,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93790538] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:30,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392476184] [2021-10-06 16:22:30,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:22:30,041 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:30,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:30,042 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:30,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-06 16:22:30,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-06 16:22:30,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:30,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 16:22:30,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:30,224 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:30,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392476184] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:30,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:30,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-10-06 16:22:30,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293846249] [2021-10-06 16:22:30,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 16:22:30,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:30,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 16:22:30,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-06 16:22:30,226 INFO L87 Difference]: Start difference. First operand 164 states and 385 transitions. Second operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 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) [2021-10-06 16:22:30,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:30,310 INFO L93 Difference]: Finished difference Result 306 states and 721 transitions. [2021-10-06 16:22:30,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 16:22:30,311 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 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 19 [2021-10-06 16:22:30,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:30,312 INFO L225 Difference]: With dead ends: 306 [2021-10-06 16:22:30,312 INFO L226 Difference]: Without dead ends: 236 [2021-10-06 16:22:30,313 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 123.6ms TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-06 16:22:30,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-06 16:22:30,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 172. [2021-10-06 16:22:30,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 169 states have (on average 2.3905325443786984) internal successors, (404), 171 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:30,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 404 transitions. [2021-10-06 16:22:30,319 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 404 transitions. Word has length 19 [2021-10-06 16:22:30,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:30,319 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 404 transitions. [2021-10-06 16:22:30,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 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) [2021-10-06 16:22:30,319 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 404 transitions. [2021-10-06 16:22:30,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 16:22:30,320 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:30,320 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1] [2021-10-06 16:22:30,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-10-06 16:22:30,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-06 16:22:30,534 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:30,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:30,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1790268732, now seen corresponding path program 16 times [2021-10-06 16:22:30,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:30,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884953887] [2021-10-06 16:22:30,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:30,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:30,706 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:30,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:30,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884953887] [2021-10-06 16:22:30,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884953887] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:30,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831059650] [2021-10-06 16:22:30,707 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:22:30,707 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:30,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:30,710 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:30,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-06 16:22:30,826 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:22:30,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:30,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 16:22:30,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:30,910 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:30,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831059650] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:30,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:30,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-06 16:22:30,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455327147] [2021-10-06 16:22:30,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 16:22:30,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:30,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 16:22:30,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-06 16:22:30,914 INFO L87 Difference]: Start difference. First operand 172 states and 404 transitions. Second operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 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) [2021-10-06 16:22:31,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:31,016 INFO L93 Difference]: Finished difference Result 322 states and 759 transitions. [2021-10-06 16:22:31,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-06 16:22:31,016 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 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 20 [2021-10-06 16:22:31,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:31,018 INFO L225 Difference]: With dead ends: 322 [2021-10-06 16:22:31,018 INFO L226 Difference]: Without dead ends: 248 [2021-10-06 16:22:31,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 123.3ms TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-06 16:22:31,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-10-06 16:22:31,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 180. [2021-10-06 16:22:31,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 177 states have (on average 2.389830508474576) internal successors, (423), 179 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:31,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 423 transitions. [2021-10-06 16:22:31,025 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 423 transitions. Word has length 20 [2021-10-06 16:22:31,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:31,026 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 423 transitions. [2021-10-06 16:22:31,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 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) [2021-10-06 16:22:31,026 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 423 transitions. [2021-10-06 16:22:31,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-06 16:22:31,026 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:31,027 INFO L512 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1] [2021-10-06 16:22:31,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-06 16:22:31,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-06 16:22:31,241 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:31,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:31,242 INFO L82 PathProgramCache]: Analyzing trace with hash -336242041, now seen corresponding path program 17 times [2021-10-06 16:22:31,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:31,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292748515] [2021-10-06 16:22:31,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:31,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:31,423 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:31,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:31,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292748515] [2021-10-06 16:22:31,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292748515] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:31,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313769305] [2021-10-06 16:22:31,424 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:22:31,424 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:31,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:31,425 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:31,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-06 16:22:31,544 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-10-06 16:22:31,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:31,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 16:22:31,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:31,615 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:31,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313769305] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:31,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:31,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-06 16:22:31,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219705808] [2021-10-06 16:22:31,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 16:22:31,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:31,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 16:22:31,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-06 16:22:31,620 INFO L87 Difference]: Start difference. First operand 180 states and 423 transitions. Second operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:31,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:31,747 INFO L93 Difference]: Finished difference Result 338 states and 797 transitions. [2021-10-06 16:22:31,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-06 16:22:31,752 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-06 16:22:31,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:31,754 INFO L225 Difference]: With dead ends: 338 [2021-10-06 16:22:31,754 INFO L226 Difference]: Without dead ends: 260 [2021-10-06 16:22:31,755 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 130.1ms TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-06 16:22:31,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-10-06 16:22:31,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 188. [2021-10-06 16:22:31,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 185 states have (on average 2.389189189189189) internal successors, (442), 187 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:31,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 442 transitions. [2021-10-06 16:22:31,762 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 442 transitions. Word has length 21 [2021-10-06 16:22:31,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:31,762 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 442 transitions. [2021-10-06 16:22:31,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:31,762 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 442 transitions. [2021-10-06 16:22:31,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 16:22:31,763 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:31,763 INFO L512 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1] [2021-10-06 16:22:31,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-06 16:22:31,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-06 16:22:31,978 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:31,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:31,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1833566564, now seen corresponding path program 18 times [2021-10-06 16:22:31,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:31,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709149949] [2021-10-06 16:22:31,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:31,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:32,166 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:32,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:32,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709149949] [2021-10-06 16:22:32,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709149949] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:32,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791395470] [2021-10-06 16:22:32,167 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:22:32,167 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:32,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:32,168 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:32,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-06 16:22:32,304 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-10-06 16:22:32,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:32,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-06 16:22:32,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:32,382 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:32,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791395470] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:32,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:32,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-06 16:22:32,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370805782] [2021-10-06 16:22:32,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 16:22:32,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:32,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 16:22:32,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-06 16:22:32,384 INFO L87 Difference]: Start difference. First operand 188 states and 442 transitions. Second operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 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) [2021-10-06 16:22:32,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:32,490 INFO L93 Difference]: Finished difference Result 354 states and 835 transitions. [2021-10-06 16:22:32,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-06 16:22:32,491 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 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 22 [2021-10-06 16:22:32,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:32,493 INFO L225 Difference]: With dead ends: 354 [2021-10-06 16:22:32,493 INFO L226 Difference]: Without dead ends: 272 [2021-10-06 16:22:32,493 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 135.9ms TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-06 16:22:32,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-06 16:22:32,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 196. [2021-10-06 16:22:32,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 193 states have (on average 2.38860103626943) internal successors, (461), 195 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:32,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 461 transitions. [2021-10-06 16:22:32,501 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 461 transitions. Word has length 22 [2021-10-06 16:22:32,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:32,501 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 461 transitions. [2021-10-06 16:22:32,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 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) [2021-10-06 16:22:32,502 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 461 transitions. [2021-10-06 16:22:32,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-06 16:22:32,502 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:32,502 INFO L512 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1] [2021-10-06 16:22:32,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-06 16:22:32,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-06 16:22:32,716 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:32,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:32,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1005986521, now seen corresponding path program 19 times [2021-10-06 16:22:32,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:32,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004160452] [2021-10-06 16:22:32,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:32,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:32,939 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:32,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:32,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004160452] [2021-10-06 16:22:32,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004160452] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:32,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211506917] [2021-10-06 16:22:32,939 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:22:32,940 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:32,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:32,941 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:32,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-06 16:22:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:33,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-06 16:22:33,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:33,131 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:33,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211506917] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:33,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:33,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-06 16:22:33,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666450462] [2021-10-06 16:22:33,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 16:22:33,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:33,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 16:22:33,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-06 16:22:33,133 INFO L87 Difference]: Start difference. First operand 196 states and 461 transitions. Second operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:33,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:33,248 INFO L93 Difference]: Finished difference Result 370 states and 873 transitions. [2021-10-06 16:22:33,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-06 16:22:33,248 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 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 23 [2021-10-06 16:22:33,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:33,251 INFO L225 Difference]: With dead ends: 370 [2021-10-06 16:22:33,251 INFO L226 Difference]: Without dead ends: 284 [2021-10-06 16:22:33,252 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 166.3ms TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-06 16:22:33,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-10-06 16:22:33,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 204. [2021-10-06 16:22:33,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 201 states have (on average 2.388059701492537) internal successors, (480), 203 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:33,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 480 transitions. [2021-10-06 16:22:33,260 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 480 transitions. Word has length 23 [2021-10-06 16:22:33,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:33,260 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 480 transitions. [2021-10-06 16:22:33,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:33,260 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 480 transitions. [2021-10-06 16:22:33,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 16:22:33,261 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:33,261 INFO L512 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1] [2021-10-06 16:22:33,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-06 16:22:33,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:33,477 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:33,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:33,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1120808964, now seen corresponding path program 20 times [2021-10-06 16:22:33,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:33,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768649712] [2021-10-06 16:22:33,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:33,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:33,742 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:33,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:33,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768649712] [2021-10-06 16:22:33,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768649712] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:33,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732947147] [2021-10-06 16:22:33,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:22:33,743 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:33,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:33,746 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:33,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-06 16:22:33,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:22:33,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:33,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 16:22:33,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:33,961 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:33,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732947147] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:33,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:33,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-06 16:22:33,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783338278] [2021-10-06 16:22:33,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 16:22:33,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:33,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 16:22:33,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-06 16:22:33,963 INFO L87 Difference]: Start difference. First operand 204 states and 480 transitions. Second operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 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) [2021-10-06 16:22:34,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:34,089 INFO L93 Difference]: Finished difference Result 386 states and 911 transitions. [2021-10-06 16:22:34,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-06 16:22:34,089 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 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 24 [2021-10-06 16:22:34,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:34,092 INFO L225 Difference]: With dead ends: 386 [2021-10-06 16:22:34,092 INFO L226 Difference]: Without dead ends: 296 [2021-10-06 16:22:34,094 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 207.3ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-06 16:22:34,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-10-06 16:22:34,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 212. [2021-10-06 16:22:34,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 209 states have (on average 2.38755980861244) internal successors, (499), 211 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:34,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 499 transitions. [2021-10-06 16:22:34,104 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 499 transitions. Word has length 24 [2021-10-06 16:22:34,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:34,104 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 499 transitions. [2021-10-06 16:22:34,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 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) [2021-10-06 16:22:34,105 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 499 transitions. [2021-10-06 16:22:34,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 16:22:34,105 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:34,105 INFO L512 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1] [2021-10-06 16:22:34,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-06 16:22:34,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-10-06 16:22:34,320 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:34,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:34,320 INFO L82 PathProgramCache]: Analyzing trace with hash -385337401, now seen corresponding path program 21 times [2021-10-06 16:22:34,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:34,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556773479] [2021-10-06 16:22:34,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:34,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:34,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:34,565 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:34,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:34,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556773479] [2021-10-06 16:22:34,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556773479] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:34,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734373931] [2021-10-06 16:22:34,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:22:34,566 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:34,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:34,568 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:34,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-06 16:22:34,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-10-06 16:22:34,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:34,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 16:22:34,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:34,813 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:34,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734373931] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:34,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:34,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-06 16:22:34,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750109591] [2021-10-06 16:22:34,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 16:22:34,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:34,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 16:22:34,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-06 16:22:34,815 INFO L87 Difference]: Start difference. First operand 212 states and 499 transitions. Second operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:34,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:34,943 INFO L93 Difference]: Finished difference Result 402 states and 949 transitions. [2021-10-06 16:22:34,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 16:22:34,944 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 16:22:34,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:34,946 INFO L225 Difference]: With dead ends: 402 [2021-10-06 16:22:34,946 INFO L226 Difference]: Without dead ends: 308 [2021-10-06 16:22:34,947 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 176.6ms TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-06 16:22:34,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-10-06 16:22:34,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 220. [2021-10-06 16:22:34,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 217 states have (on average 2.3870967741935485) internal successors, (518), 219 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:34,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 518 transitions. [2021-10-06 16:22:34,955 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 518 transitions. Word has length 25 [2021-10-06 16:22:34,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:34,956 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 518 transitions. [2021-10-06 16:22:34,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:34,956 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 518 transitions. [2021-10-06 16:22:34,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 16:22:34,957 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:34,957 INFO L512 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1] [2021-10-06 16:22:34,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-06 16:22:35,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:35,173 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:35,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:35,174 INFO L82 PathProgramCache]: Analyzing trace with hash 939444572, now seen corresponding path program 22 times [2021-10-06 16:22:35,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:35,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039271457] [2021-10-06 16:22:35,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:35,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:35,471 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:35,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:35,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039271457] [2021-10-06 16:22:35,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039271457] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:35,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716804774] [2021-10-06 16:22:35,472 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:22:35,472 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:35,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:35,473 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:35,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-06 16:22:35,624 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:22:35,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:35,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-06 16:22:35,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:35,701 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:35,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716804774] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:35,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:35,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-06 16:22:35,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131400099] [2021-10-06 16:22:35,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-06 16:22:35,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:35,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-06 16:22:35,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-06 16:22:35,703 INFO L87 Difference]: Start difference. First operand 220 states and 518 transitions. Second operand has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:35,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:35,847 INFO L93 Difference]: Finished difference Result 418 states and 987 transitions. [2021-10-06 16:22:35,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 16:22:35,848 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-06 16:22:35,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:35,850 INFO L225 Difference]: With dead ends: 418 [2021-10-06 16:22:35,850 INFO L226 Difference]: Without dead ends: 320 [2021-10-06 16:22:35,851 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 234.8ms TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-06 16:22:35,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-10-06 16:22:35,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 228. [2021-10-06 16:22:35,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 225 states have (on average 2.3866666666666667) internal successors, (537), 227 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:35,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 537 transitions. [2021-10-06 16:22:35,859 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 537 transitions. Word has length 26 [2021-10-06 16:22:35,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:35,859 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 537 transitions. [2021-10-06 16:22:35,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:35,860 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 537 transitions. [2021-10-06 16:22:35,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-06 16:22:35,861 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:35,861 INFO L512 BasicCegarLoop]: trace histogram [23, 1, 1, 1, 1] [2021-10-06 16:22:35,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-06 16:22:36,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:36,075 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:36,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:36,075 INFO L82 PathProgramCache]: Analyzing trace with hash -941987225, now seen corresponding path program 23 times [2021-10-06 16:22:36,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:36,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987092099] [2021-10-06 16:22:36,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:36,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:36,374 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:36,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:36,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987092099] [2021-10-06 16:22:36,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987092099] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:36,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567782932] [2021-10-06 16:22:36,375 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:22:36,375 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:36,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:36,377 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:36,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-06 16:22:36,535 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-10-06 16:22:36,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:36,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-06 16:22:36,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:36,615 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:36,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567782932] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:36,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:36,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-10-06 16:22:36,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519017902] [2021-10-06 16:22:36,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-06 16:22:36,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:36,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-06 16:22:36,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-06 16:22:36,618 INFO L87 Difference]: Start difference. First operand 228 states and 537 transitions. Second operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:36,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:36,776 INFO L93 Difference]: Finished difference Result 434 states and 1025 transitions. [2021-10-06 16:22:36,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-06 16:22:36,776 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-06 16:22:36,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:36,779 INFO L225 Difference]: With dead ends: 434 [2021-10-06 16:22:36,779 INFO L226 Difference]: Without dead ends: 332 [2021-10-06 16:22:36,780 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 234.8ms TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-06 16:22:36,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-10-06 16:22:36,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 236. [2021-10-06 16:22:36,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 233 states have (on average 2.3862660944206007) internal successors, (556), 235 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:36,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 556 transitions. [2021-10-06 16:22:36,789 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 556 transitions. Word has length 27 [2021-10-06 16:22:36,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:36,789 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 556 transitions. [2021-10-06 16:22:36,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:36,790 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 556 transitions. [2021-10-06 16:22:36,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:22:36,791 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:36,791 INFO L512 BasicCegarLoop]: trace histogram [24, 1, 1, 1, 1] [2021-10-06 16:22:36,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-06 16:22:37,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-10-06 16:22:37,004 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:37,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:37,005 INFO L82 PathProgramCache]: Analyzing trace with hash 863169212, now seen corresponding path program 24 times [2021-10-06 16:22:37,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:37,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110664112] [2021-10-06 16:22:37,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:37,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:37,367 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:37,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:37,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110664112] [2021-10-06 16:22:37,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110664112] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:37,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24290546] [2021-10-06 16:22:37,368 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:22:37,368 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:37,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:37,370 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:37,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-06 16:22:37,573 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-10-06 16:22:37,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:37,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-06 16:22:37,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:37,660 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:37,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24290546] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:37,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:37,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-10-06 16:22:37,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975552756] [2021-10-06 16:22:37,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-06 16:22:37,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:37,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-06 16:22:37,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-06 16:22:37,663 INFO L87 Difference]: Start difference. First operand 236 states and 556 transitions. Second operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 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) [2021-10-06 16:22:37,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:37,816 INFO L93 Difference]: Finished difference Result 450 states and 1063 transitions. [2021-10-06 16:22:37,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 16:22:37,817 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 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 28 [2021-10-06 16:22:37,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:37,820 INFO L225 Difference]: With dead ends: 450 [2021-10-06 16:22:37,820 INFO L226 Difference]: Without dead ends: 344 [2021-10-06 16:22:37,820 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 295.2ms TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-06 16:22:37,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-10-06 16:22:37,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 244. [2021-10-06 16:22:37,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 241 states have (on average 2.3858921161825726) internal successors, (575), 243 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:37,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 575 transitions. [2021-10-06 16:22:37,830 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 575 transitions. Word has length 28 [2021-10-06 16:22:37,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:37,831 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 575 transitions. [2021-10-06 16:22:37,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 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) [2021-10-06 16:22:37,831 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 575 transitions. [2021-10-06 16:22:37,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-06 16:22:37,832 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:37,832 INFO L512 BasicCegarLoop]: trace histogram [25, 1, 1, 1, 1] [2021-10-06 16:22:37,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-10-06 16:22:38,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-10-06 16:22:38,047 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:38,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:38,048 INFO L82 PathProgramCache]: Analyzing trace with hash 988443911, now seen corresponding path program 25 times [2021-10-06 16:22:38,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:38,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190332829] [2021-10-06 16:22:38,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:38,049 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:38,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:38,393 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:38,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:38,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190332829] [2021-10-06 16:22:38,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190332829] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:38,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044920690] [2021-10-06 16:22:38,394 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:22:38,394 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:38,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:38,400 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:38,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-06 16:22:38,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:38,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-06 16:22:38,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:38,654 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:38,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044920690] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:38,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:38,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-10-06 16:22:38,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438438104] [2021-10-06 16:22:38,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-06 16:22:38,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:38,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-06 16:22:38,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-10-06 16:22:38,656 INFO L87 Difference]: Start difference. First operand 244 states and 575 transitions. Second operand has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:38,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:38,844 INFO L93 Difference]: Finished difference Result 466 states and 1101 transitions. [2021-10-06 16:22:38,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-06 16:22:38,845 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-06 16:22:38,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:38,848 INFO L225 Difference]: With dead ends: 466 [2021-10-06 16:22:38,848 INFO L226 Difference]: Without dead ends: 356 [2021-10-06 16:22:38,849 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 277.6ms TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-10-06 16:22:38,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-10-06 16:22:38,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 252. [2021-10-06 16:22:38,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 249 states have (on average 2.3855421686746987) internal successors, (594), 251 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:38,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 594 transitions. [2021-10-06 16:22:38,860 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 594 transitions. Word has length 29 [2021-10-06 16:22:38,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:38,860 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 594 transitions. [2021-10-06 16:22:38,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:38,860 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 594 transitions. [2021-10-06 16:22:38,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 16:22:38,862 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:38,862 INFO L512 BasicCegarLoop]: trace histogram [26, 1, 1, 1, 1] [2021-10-06 16:22:38,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-06 16:22:39,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:39,077 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:39,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:39,078 INFO L82 PathProgramCache]: Analyzing trace with hash 576992284, now seen corresponding path program 26 times [2021-10-06 16:22:39,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:39,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930764765] [2021-10-06 16:22:39,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:39,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:39,464 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:39,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:39,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930764765] [2021-10-06 16:22:39,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930764765] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:39,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174089044] [2021-10-06 16:22:39,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:22:39,466 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:39,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:39,467 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:39,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-06 16:22:39,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:22:39,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:39,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-06 16:22:39,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:39,752 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:39,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174089044] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:39,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:39,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-10-06 16:22:39,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472310807] [2021-10-06 16:22:39,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-06 16:22:39,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:39,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-06 16:22:39,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-06 16:22:39,754 INFO L87 Difference]: Start difference. First operand 252 states and 594 transitions. Second operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:39,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:39,940 INFO L93 Difference]: Finished difference Result 482 states and 1139 transitions. [2021-10-06 16:22:39,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-06 16:22:39,941 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-06 16:22:39,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:39,944 INFO L225 Difference]: With dead ends: 482 [2021-10-06 16:22:39,944 INFO L226 Difference]: Without dead ends: 368 [2021-10-06 16:22:39,944 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 309.9ms TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-06 16:22:39,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-10-06 16:22:39,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 260. [2021-10-06 16:22:39,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 257 states have (on average 2.385214007782101) internal successors, (613), 259 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:39,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 613 transitions. [2021-10-06 16:22:39,953 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 613 transitions. Word has length 30 [2021-10-06 16:22:39,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:39,954 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 613 transitions. [2021-10-06 16:22:39,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:39,954 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 613 transitions. [2021-10-06 16:22:39,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-06 16:22:39,955 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:39,955 INFO L512 BasicCegarLoop]: trace histogram [27, 1, 1, 1, 1] [2021-10-06 16:22:39,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-10-06 16:22:40,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-06 16:22:40,169 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:40,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:40,170 INFO L82 PathProgramCache]: Analyzing trace with hash 706893735, now seen corresponding path program 27 times [2021-10-06 16:22:40,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:40,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106319908] [2021-10-06 16:22:40,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:40,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:40,563 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:40,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:40,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106319908] [2021-10-06 16:22:40,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106319908] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:40,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095813886] [2021-10-06 16:22:40,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:22:40,564 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:40,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:40,566 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:40,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-06 16:22:40,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-10-06 16:22:40,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:40,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-06 16:22:40,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:40,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095813886] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:40,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:40,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-10-06 16:22:40,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791320287] [2021-10-06 16:22:40,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-06 16:22:40,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:40,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-06 16:22:40,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-06 16:22:40,871 INFO L87 Difference]: Start difference. First operand 260 states and 613 transitions. Second operand has 31 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:41,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:41,063 INFO L93 Difference]: Finished difference Result 498 states and 1177 transitions. [2021-10-06 16:22:41,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-06 16:22:41,063 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-06 16:22:41,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:41,066 INFO L225 Difference]: With dead ends: 498 [2021-10-06 16:22:41,066 INFO L226 Difference]: Without dead ends: 380 [2021-10-06 16:22:41,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 320.4ms TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-06 16:22:41,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-10-06 16:22:41,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 268. [2021-10-06 16:22:41,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 265 states have (on average 2.3849056603773584) internal successors, (632), 267 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:41,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 632 transitions. [2021-10-06 16:22:41,077 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 632 transitions. Word has length 31 [2021-10-06 16:22:41,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:41,077 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 632 transitions. [2021-10-06 16:22:41,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:41,077 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 632 transitions. [2021-10-06 16:22:41,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-06 16:22:41,078 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:41,078 INFO L512 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1] [2021-10-06 16:22:41,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-06 16:22:41,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-06 16:22:41,294 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:41,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:41,295 INFO L82 PathProgramCache]: Analyzing trace with hash 438871420, now seen corresponding path program 28 times [2021-10-06 16:22:41,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:41,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907727892] [2021-10-06 16:22:41,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:41,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:41,710 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:41,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:41,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907727892] [2021-10-06 16:22:41,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907727892] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:41,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004469132] [2021-10-06 16:22:41,711 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:22:41,712 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:41,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:41,717 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:41,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-06 16:22:41,908 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:22:41,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:41,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-06 16:22:41,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:42,001 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:42,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004469132] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:42,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:42,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-10-06 16:22:42,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886240856] [2021-10-06 16:22:42,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-06 16:22:42,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:42,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-06 16:22:42,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-10-06 16:22:42,004 INFO L87 Difference]: Start difference. First operand 268 states and 632 transitions. Second operand has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:42,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:42,198 INFO L93 Difference]: Finished difference Result 514 states and 1215 transitions. [2021-10-06 16:22:42,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 16:22:42,199 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-06 16:22:42,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:42,202 INFO L225 Difference]: With dead ends: 514 [2021-10-06 16:22:42,202 INFO L226 Difference]: Without dead ends: 392 [2021-10-06 16:22:42,202 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 337.2ms TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-10-06 16:22:42,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-10-06 16:22:42,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 276. [2021-10-06 16:22:42,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 273 states have (on average 2.3846153846153846) internal successors, (651), 275 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:42,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 651 transitions. [2021-10-06 16:22:42,212 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 651 transitions. Word has length 32 [2021-10-06 16:22:42,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:42,212 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 651 transitions. [2021-10-06 16:22:42,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:42,212 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 651 transitions. [2021-10-06 16:22:42,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-06 16:22:42,213 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:42,213 INFO L512 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1] [2021-10-06 16:22:42,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-10-06 16:22:42,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-10-06 16:22:42,428 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:42,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:42,428 INFO L82 PathProgramCache]: Analyzing trace with hash 720114247, now seen corresponding path program 29 times [2021-10-06 16:22:42,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:42,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897610605] [2021-10-06 16:22:42,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:42,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:42,862 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:42,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:42,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897610605] [2021-10-06 16:22:42,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897610605] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:42,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619611951] [2021-10-06 16:22:42,863 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:22:42,863 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:42,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:42,864 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:42,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-06 16:22:43,072 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-10-06 16:22:43,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:43,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-06 16:22:43,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:43,163 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:43,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619611951] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:43,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:43,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-10-06 16:22:43,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279345866] [2021-10-06 16:22:43,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-06 16:22:43,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:43,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-06 16:22:43,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-10-06 16:22:43,166 INFO L87 Difference]: Start difference. First operand 276 states and 651 transitions. Second operand has 33 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:43,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:43,369 INFO L93 Difference]: Finished difference Result 530 states and 1253 transitions. [2021-10-06 16:22:43,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-06 16:22:43,369 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-06 16:22:43,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:43,372 INFO L225 Difference]: With dead ends: 530 [2021-10-06 16:22:43,372 INFO L226 Difference]: Without dead ends: 404 [2021-10-06 16:22:43,373 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 361.3ms TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-10-06 16:22:43,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-10-06 16:22:43,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 284. [2021-10-06 16:22:43,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 281 states have (on average 2.3843416370106763) internal successors, (670), 283 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:43,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 670 transitions. [2021-10-06 16:22:43,383 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 670 transitions. Word has length 33 [2021-10-06 16:22:43,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:43,383 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 670 transitions. [2021-10-06 16:22:43,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:43,384 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 670 transitions. [2021-10-06 16:22:43,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-06 16:22:43,385 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:43,385 INFO L512 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1] [2021-10-06 16:22:43,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-06 16:22:43,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-06 16:22:43,600 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:43,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:43,600 INFO L82 PathProgramCache]: Analyzing trace with hash 848707292, now seen corresponding path program 30 times [2021-10-06 16:22:43,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:43,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208394184] [2021-10-06 16:22:43,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:43,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:44,057 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:44,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:44,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208394184] [2021-10-06 16:22:44,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208394184] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:44,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626092733] [2021-10-06 16:22:44,058 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:22:44,058 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:44,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:44,060 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:44,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-06 16:22:44,297 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-10-06 16:22:44,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:44,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-06 16:22:44,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:44,390 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:44,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626092733] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:44,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:44,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-10-06 16:22:44,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890722357] [2021-10-06 16:22:44,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-06 16:22:44,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:44,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-06 16:22:44,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 16:22:44,393 INFO L87 Difference]: Start difference. First operand 284 states and 670 transitions. Second operand has 34 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:44,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:44,621 INFO L93 Difference]: Finished difference Result 546 states and 1291 transitions. [2021-10-06 16:22:44,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 16:22:44,622 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-06 16:22:44,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:44,625 INFO L225 Difference]: With dead ends: 546 [2021-10-06 16:22:44,625 INFO L226 Difference]: Without dead ends: 416 [2021-10-06 16:22:44,626 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 376.9ms TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 16:22:44,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-10-06 16:22:44,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 292. [2021-10-06 16:22:44,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 289 states have (on average 2.384083044982699) internal successors, (689), 291 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:44,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 689 transitions. [2021-10-06 16:22:44,636 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 689 transitions. Word has length 34 [2021-10-06 16:22:44,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:44,636 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 689 transitions. [2021-10-06 16:22:44,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:44,636 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 689 transitions. [2021-10-06 16:22:44,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-06 16:22:44,637 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:44,637 INFO L512 BasicCegarLoop]: trace histogram [31, 1, 1, 1, 1] [2021-10-06 16:22:44,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-06 16:22:44,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:44,851 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:44,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:44,851 INFO L82 PathProgramCache]: Analyzing trace with hash 540124391, now seen corresponding path program 31 times [2021-10-06 16:22:44,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:44,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976908053] [2021-10-06 16:22:44,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:44,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:45,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:45,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976908053] [2021-10-06 16:22:45,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976908053] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:45,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327322582] [2021-10-06 16:22:45,336 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:22:45,336 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:45,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:45,338 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:45,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-06 16:22:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:45,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-06 16:22:45,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:45,645 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:45,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327322582] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:45,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:45,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-10-06 16:22:45,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664923409] [2021-10-06 16:22:45,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-06 16:22:45,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:45,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-06 16:22:45,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 16:22:45,648 INFO L87 Difference]: Start difference. First operand 292 states and 689 transitions. Second operand has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:45,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:45,890 INFO L93 Difference]: Finished difference Result 562 states and 1329 transitions. [2021-10-06 16:22:45,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 16:22:45,891 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-06 16:22:45,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:45,894 INFO L225 Difference]: With dead ends: 562 [2021-10-06 16:22:45,894 INFO L226 Difference]: Without dead ends: 428 [2021-10-06 16:22:45,895 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 398.9ms TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 16:22:45,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-10-06 16:22:45,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 300. [2021-10-06 16:22:45,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 297 states have (on average 2.3838383838383836) internal successors, (708), 299 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:45,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 708 transitions. [2021-10-06 16:22:45,905 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 708 transitions. Word has length 35 [2021-10-06 16:22:45,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:45,906 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 708 transitions. [2021-10-06 16:22:45,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:45,906 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 708 transitions. [2021-10-06 16:22:45,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-06 16:22:45,907 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:45,907 INFO L512 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1] [2021-10-06 16:22:45,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-10-06 16:22:46,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-10-06 16:22:46,123 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:46,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:46,124 INFO L82 PathProgramCache]: Analyzing trace with hash -436010948, now seen corresponding path program 32 times [2021-10-06 16:22:46,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:46,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712459282] [2021-10-06 16:22:46,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:46,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:46,638 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:46,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:46,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712459282] [2021-10-06 16:22:46,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712459282] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:46,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790170394] [2021-10-06 16:22:46,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:22:46,639 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:46,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:46,641 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:46,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-06 16:22:46,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:22:46,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:46,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-06 16:22:46,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:46,950 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:46,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790170394] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:46,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:46,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-10-06 16:22:46,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019826735] [2021-10-06 16:22:46,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-06 16:22:46,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:46,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-06 16:22:46,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 16:22:46,952 INFO L87 Difference]: Start difference. First operand 300 states and 708 transitions. Second operand has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:47,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:47,192 INFO L93 Difference]: Finished difference Result 578 states and 1367 transitions. [2021-10-06 16:22:47,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-06 16:22:47,193 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-06 16:22:47,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:47,196 INFO L225 Difference]: With dead ends: 578 [2021-10-06 16:22:47,196 INFO L226 Difference]: Without dead ends: 440 [2021-10-06 16:22:47,197 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 434.3ms TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 16:22:47,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-10-06 16:22:47,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 308. [2021-10-06 16:22:47,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 305 states have (on average 2.3836065573770493) internal successors, (727), 307 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:47,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 727 transitions. [2021-10-06 16:22:47,208 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 727 transitions. Word has length 36 [2021-10-06 16:22:47,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:47,208 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 727 transitions. [2021-10-06 16:22:47,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:47,209 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 727 transitions. [2021-10-06 16:22:47,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-06 16:22:47,210 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:47,210 INFO L512 BasicCegarLoop]: trace histogram [33, 1, 1, 1, 1] [2021-10-06 16:22:47,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-10-06 16:22:47,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:47,424 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:47,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:47,425 INFO L82 PathProgramCache]: Analyzing trace with hash -631435385, now seen corresponding path program 33 times [2021-10-06 16:22:47,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:47,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736997814] [2021-10-06 16:22:47,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:47,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:47,963 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:47,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:47,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736997814] [2021-10-06 16:22:47,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736997814] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:47,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434275392] [2021-10-06 16:22:47,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:22:47,965 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:47,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:47,969 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:47,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-06 16:22:48,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-10-06 16:22:48,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:48,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-06 16:22:48,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:48,343 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:48,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434275392] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:48,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:48,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-10-06 16:22:48,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776680836] [2021-10-06 16:22:48,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-06 16:22:48,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:48,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-06 16:22:48,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 16:22:48,346 INFO L87 Difference]: Start difference. First operand 308 states and 727 transitions. Second operand has 37 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:48,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:48,594 INFO L93 Difference]: Finished difference Result 594 states and 1405 transitions. [2021-10-06 16:22:48,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-06 16:22:48,595 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-06 16:22:48,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:48,598 INFO L225 Difference]: With dead ends: 594 [2021-10-06 16:22:48,598 INFO L226 Difference]: Without dead ends: 452 [2021-10-06 16:22:48,598 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 455.9ms TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 16:22:48,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-10-06 16:22:48,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 316. [2021-10-06 16:22:48,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 313 states have (on average 2.3833865814696487) internal successors, (746), 315 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:48,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 746 transitions. [2021-10-06 16:22:48,609 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 746 transitions. Word has length 37 [2021-10-06 16:22:48,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:48,609 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 746 transitions. [2021-10-06 16:22:48,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:48,609 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 746 transitions. [2021-10-06 16:22:48,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 16:22:48,611 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:48,611 INFO L512 BasicCegarLoop]: trace histogram [34, 1, 1, 1, 1] [2021-10-06 16:22:48,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-06 16:22:48,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-10-06 16:22:48,826 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:48,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:48,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1900341660, now seen corresponding path program 34 times [2021-10-06 16:22:48,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:48,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946555958] [2021-10-06 16:22:48,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:48,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:49,420 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:49,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:49,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946555958] [2021-10-06 16:22:49,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946555958] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:49,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321405946] [2021-10-06 16:22:49,421 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:22:49,421 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:49,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:49,422 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:49,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-06 16:22:49,669 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:22:49,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:49,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-06 16:22:49,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:49,772 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:49,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321405946] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:49,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:49,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-10-06 16:22:49,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932530821] [2021-10-06 16:22:49,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-06 16:22:49,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:49,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-06 16:22:49,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 16:22:49,774 INFO L87 Difference]: Start difference. First operand 316 states and 746 transitions. Second operand has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:50,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:50,026 INFO L93 Difference]: Finished difference Result 610 states and 1443 transitions. [2021-10-06 16:22:50,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-06 16:22:50,027 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 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 38 [2021-10-06 16:22:50,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:50,029 INFO L225 Difference]: With dead ends: 610 [2021-10-06 16:22:50,029 INFO L226 Difference]: Without dead ends: 464 [2021-10-06 16:22:50,029 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 494.5ms TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 16:22:50,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-10-06 16:22:50,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 324. [2021-10-06 16:22:50,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 321 states have (on average 2.383177570093458) internal successors, (765), 323 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:50,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 765 transitions. [2021-10-06 16:22:50,039 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 765 transitions. Word has length 38 [2021-10-06 16:22:50,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:50,039 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 765 transitions. [2021-10-06 16:22:50,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:50,040 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 765 transitions. [2021-10-06 16:22:50,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-06 16:22:50,041 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:50,041 INFO L512 BasicCegarLoop]: trace histogram [35, 1, 1, 1, 1] [2021-10-06 16:22:50,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-10-06 16:22:50,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:50,255 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:50,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:50,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1218948569, now seen corresponding path program 35 times [2021-10-06 16:22:50,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:50,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128513691] [2021-10-06 16:22:50,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:50,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:50,814 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:50,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:50,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128513691] [2021-10-06 16:22:50,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128513691] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:50,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900176962] [2021-10-06 16:22:50,815 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:22:50,815 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:50,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:50,816 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:50,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-06 16:22:51,095 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-10-06 16:22:51,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:51,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-06 16:22:51,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:51,197 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:51,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900176962] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:51,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:51,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-10-06 16:22:51,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707887704] [2021-10-06 16:22:51,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-10-06 16:22:51,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:51,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-10-06 16:22:51,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-06 16:22:51,199 INFO L87 Difference]: Start difference. First operand 324 states and 765 transitions. Second operand has 39 states, 38 states have (on average 1.131578947368421) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:51,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:51,452 INFO L93 Difference]: Finished difference Result 626 states and 1481 transitions. [2021-10-06 16:22:51,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-06 16:22:51,452 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.131578947368421) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-06 16:22:51,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:51,455 INFO L225 Difference]: With dead ends: 626 [2021-10-06 16:22:51,455 INFO L226 Difference]: Without dead ends: 476 [2021-10-06 16:22:51,456 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 474.2ms TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-06 16:22:51,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-10-06 16:22:51,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 332. [2021-10-06 16:22:51,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 329 states have (on average 2.382978723404255) internal successors, (784), 331 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:51,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 784 transitions. [2021-10-06 16:22:51,466 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 784 transitions. Word has length 39 [2021-10-06 16:22:51,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:51,466 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 784 transitions. [2021-10-06 16:22:51,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.131578947368421) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:51,466 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 784 transitions. [2021-10-06 16:22:51,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-06 16:22:51,467 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:51,468 INFO L512 BasicCegarLoop]: trace histogram [36, 1, 1, 1, 1] [2021-10-06 16:22:51,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2021-10-06 16:22:51,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:51,683 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:51,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:51,684 INFO L82 PathProgramCache]: Analyzing trace with hash 867302140, now seen corresponding path program 36 times [2021-10-06 16:22:51,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:51,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279135206] [2021-10-06 16:22:51,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:51,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:52,314 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:52,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:52,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279135206] [2021-10-06 16:22:52,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279135206] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:52,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754859689] [2021-10-06 16:22:52,315 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:22:52,315 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:52,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:52,316 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:52,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-06 16:22:52,628 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-10-06 16:22:52,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:52,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-06 16:22:52,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:52,750 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:52,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754859689] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:52,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:52,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-10-06 16:22:52,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369300380] [2021-10-06 16:22:52,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-06 16:22:52,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:52,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-06 16:22:52,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-10-06 16:22:52,753 INFO L87 Difference]: Start difference. First operand 332 states and 784 transitions. Second operand has 40 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:53,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:53,069 INFO L93 Difference]: Finished difference Result 642 states and 1519 transitions. [2021-10-06 16:22:53,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 16:22:53,070 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-06 16:22:53,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:53,073 INFO L225 Difference]: With dead ends: 642 [2021-10-06 16:22:53,073 INFO L226 Difference]: Without dead ends: 488 [2021-10-06 16:22:53,074 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 543.4ms TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-10-06 16:22:53,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-10-06 16:22:53,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 340. [2021-10-06 16:22:53,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 337 states have (on average 2.3827893175074184) internal successors, (803), 339 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:53,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 803 transitions. [2021-10-06 16:22:53,083 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 803 transitions. Word has length 40 [2021-10-06 16:22:53,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:53,084 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 803 transitions. [2021-10-06 16:22:53,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:53,084 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 803 transitions. [2021-10-06 16:22:53,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-06 16:22:53,085 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:53,085 INFO L512 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1] [2021-10-06 16:22:53,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-10-06 16:22:53,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-10-06 16:22:53,301 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:53,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:53,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1116564679, now seen corresponding path program 37 times [2021-10-06 16:22:53,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:53,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732762676] [2021-10-06 16:22:53,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:53,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:53,933 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:53,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:53,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732762676] [2021-10-06 16:22:53,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732762676] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:53,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597934812] [2021-10-06 16:22:53,934 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:22:53,934 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:53,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:53,935 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:53,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-06 16:22:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:54,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-06 16:22:54,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:54,341 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:54,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597934812] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:54,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:54,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-10-06 16:22:54,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374666017] [2021-10-06 16:22:54,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-10-06 16:22:54,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:54,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-10-06 16:22:54,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-10-06 16:22:54,344 INFO L87 Difference]: Start difference. First operand 340 states and 803 transitions. Second operand has 41 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:54,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:54,665 INFO L93 Difference]: Finished difference Result 658 states and 1557 transitions. [2021-10-06 16:22:54,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-06 16:22:54,665 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-10-06 16:22:54,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:54,668 INFO L225 Difference]: With dead ends: 658 [2021-10-06 16:22:54,668 INFO L226 Difference]: Without dead ends: 500 [2021-10-06 16:22:54,668 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 543.7ms TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-10-06 16:22:54,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-10-06 16:22:54,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 348. [2021-10-06 16:22:54,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 345 states have (on average 2.382608695652174) internal successors, (822), 347 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:54,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 822 transitions. [2021-10-06 16:22:54,678 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 822 transitions. Word has length 41 [2021-10-06 16:22:54,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:54,678 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 822 transitions. [2021-10-06 16:22:54,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:54,679 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 822 transitions. [2021-10-06 16:22:54,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-06 16:22:54,680 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:54,680 INFO L512 BasicCegarLoop]: trace histogram [38, 1, 1, 1, 1] [2021-10-06 16:22:54,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-10-06 16:22:54,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-10-06 16:22:54,893 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:54,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:54,894 INFO L82 PathProgramCache]: Analyzing trace with hash 253768796, now seen corresponding path program 38 times [2021-10-06 16:22:54,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:54,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515556530] [2021-10-06 16:22:54,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:54,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:55,563 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:55,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:55,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515556530] [2021-10-06 16:22:55,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515556530] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:55,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040917584] [2021-10-06 16:22:55,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:22:55,565 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:55,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:55,566 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:55,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-06 16:22:55,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:22:55,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:55,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-06 16:22:55,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:55,976 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:55,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040917584] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:55,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:55,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-10-06 16:22:55,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881286384] [2021-10-06 16:22:55,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-10-06 16:22:55,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:55,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-10-06 16:22:55,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 16:22:55,979 INFO L87 Difference]: Start difference. First operand 348 states and 822 transitions. Second operand has 42 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:56,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:56,291 INFO L93 Difference]: Finished difference Result 674 states and 1595 transitions. [2021-10-06 16:22:56,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-06 16:22:56,292 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-10-06 16:22:56,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:56,294 INFO L225 Difference]: With dead ends: 674 [2021-10-06 16:22:56,294 INFO L226 Difference]: Without dead ends: 512 [2021-10-06 16:22:56,295 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 580.9ms TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 16:22:56,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-10-06 16:22:56,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 356. [2021-10-06 16:22:56,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 353 states have (on average 2.3824362606232294) internal successors, (841), 355 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:56,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 841 transitions. [2021-10-06 16:22:56,304 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 841 transitions. Word has length 42 [2021-10-06 16:22:56,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:56,305 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 841 transitions. [2021-10-06 16:22:56,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:56,305 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 841 transitions. [2021-10-06 16:22:56,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-06 16:22:56,306 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:56,306 INFO L512 BasicCegarLoop]: trace histogram [39, 1, 1, 1, 1] [2021-10-06 16:22:56,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2021-10-06 16:22:56,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-10-06 16:22:56,520 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:56,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:56,521 INFO L82 PathProgramCache]: Analyzing trace with hash -723099801, now seen corresponding path program 39 times [2021-10-06 16:22:56,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:56,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674519500] [2021-10-06 16:22:56,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:56,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:57,247 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:57,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:57,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674519500] [2021-10-06 16:22:57,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674519500] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:57,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659986960] [2021-10-06 16:22:57,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:22:57,248 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:57,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:57,249 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:57,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-06 16:22:57,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2021-10-06 16:22:57,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:57,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-06 16:22:57,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:57,715 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:57,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659986960] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:57,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:57,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-10-06 16:22:57,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112825392] [2021-10-06 16:22:57,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-10-06 16:22:57,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:57,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-10-06 16:22:57,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-10-06 16:22:57,718 INFO L87 Difference]: Start difference. First operand 356 states and 841 transitions. Second operand has 43 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:58,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:58,015 INFO L93 Difference]: Finished difference Result 690 states and 1633 transitions. [2021-10-06 16:22:58,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-06 16:22:58,015 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 states have internal predecessors, (47), 0 states have call successors, (0), 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 43 [2021-10-06 16:22:58,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:58,018 INFO L225 Difference]: With dead ends: 690 [2021-10-06 16:22:58,018 INFO L226 Difference]: Without dead ends: 524 [2021-10-06 16:22:58,018 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 636.9ms TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-10-06 16:22:58,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-10-06 16:22:58,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 364. [2021-10-06 16:22:58,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 361 states have (on average 2.3822714681440442) internal successors, (860), 363 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:58,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 860 transitions. [2021-10-06 16:22:58,028 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 860 transitions. Word has length 43 [2021-10-06 16:22:58,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:58,028 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 860 transitions. [2021-10-06 16:22:58,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:58,028 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 860 transitions. [2021-10-06 16:22:58,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-06 16:22:58,030 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:58,030 INFO L512 BasicCegarLoop]: trace histogram [40, 1, 1, 1, 1] [2021-10-06 16:22:58,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-10-06 16:22:58,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:58,244 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:22:58,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:58,245 INFO L82 PathProgramCache]: Analyzing trace with hash -941255236, now seen corresponding path program 40 times [2021-10-06 16:22:58,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:58,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830211217] [2021-10-06 16:22:58,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:58,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:59,032 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:59,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:59,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830211217] [2021-10-06 16:22:59,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830211217] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:59,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796033932] [2021-10-06 16:22:59,033 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:22:59,034 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:59,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:59,037 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:59,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-06 16:22:59,358 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:22:59,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:59,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-06 16:22:59,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:59,468 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:59,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796033932] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:59,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:59,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-10-06 16:22:59,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245271037] [2021-10-06 16:22:59,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-10-06 16:22:59,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:59,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-10-06 16:22:59,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-10-06 16:22:59,471 INFO L87 Difference]: Start difference. First operand 364 states and 860 transitions. Second operand has 44 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:59,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:59,794 INFO L93 Difference]: Finished difference Result 706 states and 1671 transitions. [2021-10-06 16:22:59,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-06 16:22:59,795 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 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 44 [2021-10-06 16:22:59,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:59,798 INFO L225 Difference]: With dead ends: 706 [2021-10-06 16:22:59,798 INFO L226 Difference]: Without dead ends: 536 [2021-10-06 16:22:59,798 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 691.2ms TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-10-06 16:22:59,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-10-06 16:22:59,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 372. [2021-10-06 16:22:59,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 369 states have (on average 2.3821138211382116) internal successors, (879), 371 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:59,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 879 transitions. [2021-10-06 16:22:59,808 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 879 transitions. Word has length 44 [2021-10-06 16:22:59,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:59,809 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 879 transitions. [2021-10-06 16:22:59,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:59,809 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 879 transitions. [2021-10-06 16:22:59,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-06 16:22:59,810 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:59,810 INFO L512 BasicCegarLoop]: trace histogram [41, 1, 1, 1, 1] [2021-10-06 16:22:59,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-10-06 16:23:00,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:00,025 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:23:00,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:00,026 INFO L82 PathProgramCache]: Analyzing trace with hash 885860871, now seen corresponding path program 41 times [2021-10-06 16:23:00,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:00,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062017171] [2021-10-06 16:23:00,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:00,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:00,828 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:00,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:00,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062017171] [2021-10-06 16:23:00,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062017171] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:00,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993008471] [2021-10-06 16:23:00,829 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:23:00,829 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:00,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:00,831 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:00,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-06 16:23:01,191 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2021-10-06 16:23:01,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:23:01,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-06 16:23:01,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:01,352 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:01,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993008471] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:01,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:01,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2021-10-06 16:23:01,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086188698] [2021-10-06 16:23:01,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-10-06 16:23:01,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:01,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-10-06 16:23:01,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-10-06 16:23:01,354 INFO L87 Difference]: Start difference. First operand 372 states and 879 transitions. Second operand has 45 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 44 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:01,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:01,701 INFO L93 Difference]: Finished difference Result 722 states and 1709 transitions. [2021-10-06 16:23:01,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-06 16:23:01,701 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 44 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-06 16:23:01,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:01,704 INFO L225 Difference]: With dead ends: 722 [2021-10-06 16:23:01,704 INFO L226 Difference]: Without dead ends: 548 [2021-10-06 16:23:01,704 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 699.5ms TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-10-06 16:23:01,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-10-06 16:23:01,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 380. [2021-10-06 16:23:01,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 377 states have (on average 2.381962864721485) internal successors, (898), 379 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:01,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 898 transitions. [2021-10-06 16:23:01,713 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 898 transitions. Word has length 45 [2021-10-06 16:23:01,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:01,713 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 898 transitions. [2021-10-06 16:23:01,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 44 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:01,714 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 898 transitions. [2021-10-06 16:23:01,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-06 16:23:01,715 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:01,715 INFO L512 BasicCegarLoop]: trace histogram [42, 1, 1, 1, 1] [2021-10-06 16:23:01,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-10-06 16:23:01,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:01,930 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:23:01,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:01,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1691885340, now seen corresponding path program 42 times [2021-10-06 16:23:01,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:01,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118699467] [2021-10-06 16:23:01,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:01,932 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:02,706 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:02,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:02,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118699467] [2021-10-06 16:23:02,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118699467] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:02,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564796974] [2021-10-06 16:23:02,708 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:23:02,709 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:02,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:02,710 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:02,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-10-06 16:23:03,164 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2021-10-06 16:23:03,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:23:03,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-06 16:23:03,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:03,275 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:03,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564796974] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:03,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:03,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 44 [2021-10-06 16:23:03,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872264520] [2021-10-06 16:23:03,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-10-06 16:23:03,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:03,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-10-06 16:23:03,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-06 16:23:03,278 INFO L87 Difference]: Start difference. First operand 380 states and 898 transitions. Second operand has 46 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 45 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:03,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:03,663 INFO L93 Difference]: Finished difference Result 738 states and 1747 transitions. [2021-10-06 16:23:03,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-06 16:23:03,664 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 45 states have internal predecessors, (50), 0 states have call successors, (0), 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 46 [2021-10-06 16:23:03,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:03,667 INFO L225 Difference]: With dead ends: 738 [2021-10-06 16:23:03,667 INFO L226 Difference]: Without dead ends: 560 [2021-10-06 16:23:03,668 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 682.0ms TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-06 16:23:03,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-10-06 16:23:03,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 388. [2021-10-06 16:23:03,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 385 states have (on average 2.381818181818182) internal successors, (917), 387 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:03,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 917 transitions. [2021-10-06 16:23:03,676 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 917 transitions. Word has length 46 [2021-10-06 16:23:03,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:03,677 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 917 transitions. [2021-10-06 16:23:03,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 45 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:03,677 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 917 transitions. [2021-10-06 16:23:03,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 16:23:03,679 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:03,679 INFO L512 BasicCegarLoop]: trace histogram [43, 1, 1, 1, 1] [2021-10-06 16:23:03,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2021-10-06 16:23:03,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:03,894 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:23:03,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:03,895 INFO L82 PathProgramCache]: Analyzing trace with hash 908840103, now seen corresponding path program 43 times [2021-10-06 16:23:03,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:03,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281422653] [2021-10-06 16:23:03,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:03,896 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:04,724 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:04,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:04,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281422653] [2021-10-06 16:23:04,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281422653] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:04,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731968489] [2021-10-06 16:23:04,725 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:23:04,725 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:04,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:04,727 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:04,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-10-06 16:23:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:05,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-06 16:23:05,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:05,225 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:05,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731968489] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:05,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:05,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 45 [2021-10-06 16:23:05,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930542201] [2021-10-06 16:23:05,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-10-06 16:23:05,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:05,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-10-06 16:23:05,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 16:23:05,228 INFO L87 Difference]: Start difference. First operand 388 states and 917 transitions. Second operand has 47 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:05,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:05,620 INFO L93 Difference]: Finished difference Result 754 states and 1785 transitions. [2021-10-06 16:23:05,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-06 16:23:05,620 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-06 16:23:05,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:05,623 INFO L225 Difference]: With dead ends: 754 [2021-10-06 16:23:05,623 INFO L226 Difference]: Without dead ends: 572 [2021-10-06 16:23:05,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 732.3ms TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 16:23:05,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-10-06 16:23:05,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 396. [2021-10-06 16:23:05,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 393 states have (on average 2.381679389312977) internal successors, (936), 395 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:05,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 936 transitions. [2021-10-06 16:23:05,632 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 936 transitions. Word has length 47 [2021-10-06 16:23:05,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:05,632 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 936 transitions. [2021-10-06 16:23:05,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:05,632 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 936 transitions. [2021-10-06 16:23:05,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-06 16:23:05,634 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:05,634 INFO L512 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1] [2021-10-06 16:23:05,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-10-06 16:23:05,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-10-06 16:23:05,847 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:23:05,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:05,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1890725764, now seen corresponding path program 44 times [2021-10-06 16:23:05,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:05,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349515767] [2021-10-06 16:23:05,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:05,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:06,759 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:06,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:06,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349515767] [2021-10-06 16:23:06,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349515767] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:06,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179119361] [2021-10-06 16:23:06,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:23:06,760 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:06,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:06,764 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:06,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-10-06 16:23:07,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:23:07,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:23:07,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-06 16:23:07,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:07,295 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:07,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179119361] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:07,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:07,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 46 [2021-10-06 16:23:07,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474553344] [2021-10-06 16:23:07,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-10-06 16:23:07,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:07,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-10-06 16:23:07,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-10-06 16:23:07,298 INFO L87 Difference]: Start difference. First operand 396 states and 936 transitions. Second operand has 48 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:07,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:07,646 INFO L93 Difference]: Finished difference Result 770 states and 1823 transitions. [2021-10-06 16:23:07,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-06 16:23:07,647 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-10-06 16:23:07,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:07,650 INFO L225 Difference]: With dead ends: 770 [2021-10-06 16:23:07,651 INFO L226 Difference]: Without dead ends: 584 [2021-10-06 16:23:07,651 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 806.0ms TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-10-06 16:23:07,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-10-06 16:23:07,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 404. [2021-10-06 16:23:07,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 401 states have (on average 2.3815461346633415) internal successors, (955), 403 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:07,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 955 transitions. [2021-10-06 16:23:07,661 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 955 transitions. Word has length 48 [2021-10-06 16:23:07,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:07,661 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 955 transitions. [2021-10-06 16:23:07,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:07,662 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 955 transitions. [2021-10-06 16:23:07,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-06 16:23:07,663 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:07,663 INFO L512 BasicCegarLoop]: trace histogram [45, 1, 1, 1, 1] [2021-10-06 16:23:07,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-10-06 16:23:07,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-10-06 16:23:07,877 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:23:07,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:07,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1517045575, now seen corresponding path program 45 times [2021-10-06 16:23:07,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:07,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816856777] [2021-10-06 16:23:07,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:07,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:08,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:08,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:08,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816856777] [2021-10-06 16:23:08,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816856777] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:08,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382382131] [2021-10-06 16:23:08,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:23:08,835 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:08,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:08,835 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:08,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-10-06 16:23:09,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2021-10-06 16:23:09,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:23:09,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-06 16:23:09,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:09,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:09,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382382131] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:09,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:09,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 47 [2021-10-06 16:23:09,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387641337] [2021-10-06 16:23:09,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-10-06 16:23:09,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:09,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-10-06 16:23:09,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-10-06 16:23:09,402 INFO L87 Difference]: Start difference. First operand 404 states and 955 transitions. Second operand has 49 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 48 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:09,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:09,772 INFO L93 Difference]: Finished difference Result 786 states and 1861 transitions. [2021-10-06 16:23:09,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-06 16:23:09,772 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 48 states have internal predecessors, (53), 0 states have call successors, (0), 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 49 [2021-10-06 16:23:09,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:09,776 INFO L225 Difference]: With dead ends: 786 [2021-10-06 16:23:09,776 INFO L226 Difference]: Without dead ends: 596 [2021-10-06 16:23:09,776 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 838.1ms TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-10-06 16:23:09,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-10-06 16:23:09,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 412. [2021-10-06 16:23:09,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 409 states have (on average 2.3814180929095357) internal successors, (974), 411 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:09,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 974 transitions. [2021-10-06 16:23:09,788 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 974 transitions. Word has length 49 [2021-10-06 16:23:09,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:09,789 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 974 transitions. [2021-10-06 16:23:09,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 48 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:09,793 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 974 transitions. [2021-10-06 16:23:09,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-06 16:23:09,794 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:09,795 INFO L512 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1] [2021-10-06 16:23:09,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-10-06 16:23:09,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-10-06 16:23:09,996 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:23:09,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:09,996 INFO L82 PathProgramCache]: Analyzing trace with hash -216225316, now seen corresponding path program 46 times [2021-10-06 16:23:09,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:09,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053201790] [2021-10-06 16:23:09,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:09,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:10,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:10,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:10,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:10,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053201790] [2021-10-06 16:23:10,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053201790] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:10,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317848235] [2021-10-06 16:23:10,976 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:23:10,976 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:10,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:10,977 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:10,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-06 16:23:11,396 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:23:11,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:23:11,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-06 16:23:11,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:11,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:11,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317848235] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:11,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:11,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 48 [2021-10-06 16:23:11,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785475956] [2021-10-06 16:23:11,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-10-06 16:23:11,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:11,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-10-06 16:23:11,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-10-06 16:23:11,553 INFO L87 Difference]: Start difference. First operand 412 states and 974 transitions. Second operand has 50 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:11,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:11,936 INFO L93 Difference]: Finished difference Result 802 states and 1899 transitions. [2021-10-06 16:23:11,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-06 16:23:11,937 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 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 50 [2021-10-06 16:23:11,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:11,940 INFO L225 Difference]: With dead ends: 802 [2021-10-06 16:23:11,940 INFO L226 Difference]: Without dead ends: 608 [2021-10-06 16:23:11,940 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 880.9ms TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-10-06 16:23:11,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-10-06 16:23:11,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 420. [2021-10-06 16:23:11,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 417 states have (on average 2.381294964028777) internal successors, (993), 419 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:11,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 993 transitions. [2021-10-06 16:23:11,951 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 993 transitions. Word has length 50 [2021-10-06 16:23:11,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:11,951 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 993 transitions. [2021-10-06 16:23:11,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:11,951 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 993 transitions. [2021-10-06 16:23:11,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-06 16:23:11,953 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:11,953 INFO L512 BasicCegarLoop]: trace histogram [47, 1, 1, 1, 1] [2021-10-06 16:23:11,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2021-10-06 16:23:12,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:12,167 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:23:12,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:12,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1886951911, now seen corresponding path program 47 times [2021-10-06 16:23:12,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:12,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131413973] [2021-10-06 16:23:12,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:12,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:13,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:13,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:13,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131413973] [2021-10-06 16:23:13,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131413973] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:13,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805733003] [2021-10-06 16:23:13,213 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:23:13,213 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:13,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:13,214 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:13,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-06 16:23:13,657 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2021-10-06 16:23:13,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:23:13,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-06 16:23:13,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:13,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:13,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805733003] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:13,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:13,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 49 [2021-10-06 16:23:13,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287715740] [2021-10-06 16:23:13,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-10-06 16:23:13,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:13,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-10-06 16:23:13,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-10-06 16:23:13,802 INFO L87 Difference]: Start difference. First operand 420 states and 993 transitions. Second operand has 51 states, 50 states have (on average 1.1) internal successors, (55), 50 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:14,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:14,189 INFO L93 Difference]: Finished difference Result 818 states and 1937 transitions. [2021-10-06 16:23:14,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-06 16:23:14,190 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.1) internal successors, (55), 50 states have internal predecessors, (55), 0 states have call successors, (0), 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 51 [2021-10-06 16:23:14,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:14,192 INFO L225 Difference]: With dead ends: 818 [2021-10-06 16:23:14,192 INFO L226 Difference]: Without dead ends: 620 [2021-10-06 16:23:14,192 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 920.6ms TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-10-06 16:23:14,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-10-06 16:23:14,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 428. [2021-10-06 16:23:14,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 425 states have (on average 2.3811764705882354) internal successors, (1012), 427 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:14,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 1012 transitions. [2021-10-06 16:23:14,199 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 1012 transitions. Word has length 51 [2021-10-06 16:23:14,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:14,199 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 1012 transitions. [2021-10-06 16:23:14,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 1.1) internal successors, (55), 50 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:14,200 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 1012 transitions. [2021-10-06 16:23:14,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-06 16:23:14,201 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:14,201 INFO L512 BasicCegarLoop]: trace histogram [48, 1, 1, 1, 1] [2021-10-06 16:23:14,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2021-10-06 16:23:14,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-10-06 16:23:14,416 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:23:14,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:14,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1634030788, now seen corresponding path program 48 times [2021-10-06 16:23:14,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:14,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014779744] [2021-10-06 16:23:14,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:14,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:15,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:15,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:15,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014779744] [2021-10-06 16:23:15,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014779744] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:15,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281814008] [2021-10-06 16:23:15,505 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:23:15,505 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:15,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:15,506 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:15,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-10-06 16:23:15,979 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-10-06 16:23:15,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:23:15,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-06 16:23:15,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:16,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:16,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281814008] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:16,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:16,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 50 [2021-10-06 16:23:16,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673200345] [2021-10-06 16:23:16,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-10-06 16:23:16,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:16,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-10-06 16:23:16,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-10-06 16:23:16,108 INFO L87 Difference]: Start difference. First operand 428 states and 1012 transitions. Second operand has 52 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 51 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:16,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:16,608 INFO L93 Difference]: Finished difference Result 834 states and 1975 transitions. [2021-10-06 16:23:16,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-06 16:23:16,608 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 51 states have internal predecessors, (56), 0 states have call successors, (0), 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 52 [2021-10-06 16:23:16,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:16,609 INFO L225 Difference]: With dead ends: 834 [2021-10-06 16:23:16,609 INFO L226 Difference]: Without dead ends: 632 [2021-10-06 16:23:16,613 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 972.8ms TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-10-06 16:23:16,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-10-06 16:23:16,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 436. [2021-10-06 16:23:16,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 433 states have (on average 2.3810623556581985) internal successors, (1031), 435 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:16,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1031 transitions. [2021-10-06 16:23:16,621 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1031 transitions. Word has length 52 [2021-10-06 16:23:16,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:16,622 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 1031 transitions. [2021-10-06 16:23:16,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 51 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:16,622 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1031 transitions. [2021-10-06 16:23:16,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-06 16:23:16,623 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:16,624 INFO L512 BasicCegarLoop]: trace histogram [49, 1, 1, 1, 1] [2021-10-06 16:23:16,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-10-06 16:23:16,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:16,839 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:23:16,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:16,840 INFO L82 PathProgramCache]: Analyzing trace with hash 884655239, now seen corresponding path program 49 times [2021-10-06 16:23:16,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:16,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255096799] [2021-10-06 16:23:16,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:16,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:18,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:18,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:18,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255096799] [2021-10-06 16:23:18,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255096799] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:18,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68839734] [2021-10-06 16:23:18,085 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:23:18,085 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:18,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:18,087 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:18,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-06 16:23:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:18,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-06 16:23:18,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:18,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:18,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68839734] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:18,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:18,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 51 [2021-10-06 16:23:18,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877843433] [2021-10-06 16:23:18,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-10-06 16:23:18,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:18,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-10-06 16:23:18,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-10-06 16:23:18,701 INFO L87 Difference]: Start difference. First operand 436 states and 1031 transitions. Second operand has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:19,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:19,289 INFO L93 Difference]: Finished difference Result 850 states and 2013 transitions. [2021-10-06 16:23:19,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-06 16:23:19,290 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 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 53 [2021-10-06 16:23:19,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:19,292 INFO L225 Difference]: With dead ends: 850 [2021-10-06 16:23:19,292 INFO L226 Difference]: Without dead ends: 644 [2021-10-06 16:23:19,292 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1103.8ms TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-10-06 16:23:19,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2021-10-06 16:23:19,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 444. [2021-10-06 16:23:19,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 441 states have (on average 2.380952380952381) internal successors, (1050), 443 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:19,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1050 transitions. [2021-10-06 16:23:19,303 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 1050 transitions. Word has length 53 [2021-10-06 16:23:19,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:19,303 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 1050 transitions. [2021-10-06 16:23:19,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:19,303 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 1050 transitions. [2021-10-06 16:23:19,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-06 16:23:19,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:19,305 INFO L512 BasicCegarLoop]: trace histogram [50, 1, 1, 1, 1] [2021-10-06 16:23:19,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-10-06 16:23:19,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-10-06 16:23:19,520 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:23:19,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:19,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1654510748, now seen corresponding path program 50 times [2021-10-06 16:23:19,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:19,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685982554] [2021-10-06 16:23:19,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:19,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:20,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:20,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:20,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685982554] [2021-10-06 16:23:20,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685982554] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:20,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668651517] [2021-10-06 16:23:20,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:23:20,661 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:20,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:20,662 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:20,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-10-06 16:23:21,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:23:21,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:23:21,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-06 16:23:21,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:21,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:21,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668651517] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:21,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:21,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 52 [2021-10-06 16:23:21,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360178909] [2021-10-06 16:23:21,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-10-06 16:23:21,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:21,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-10-06 16:23:21,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-10-06 16:23:21,321 INFO L87 Difference]: Start difference. First operand 444 states and 1050 transitions. Second operand has 54 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 53 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:21,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:21,799 INFO L93 Difference]: Finished difference Result 866 states and 2051 transitions. [2021-10-06 16:23:21,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-06 16:23:21,799 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 53 states have internal predecessors, (58), 0 states have call successors, (0), 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 54 [2021-10-06 16:23:21,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:21,801 INFO L225 Difference]: With dead ends: 866 [2021-10-06 16:23:21,801 INFO L226 Difference]: Without dead ends: 656 [2021-10-06 16:23:21,801 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1022.9ms TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-10-06 16:23:21,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-10-06 16:23:21,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 452. [2021-10-06 16:23:21,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 449 states have (on average 2.3808463251670378) internal successors, (1069), 451 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:21,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1069 transitions. [2021-10-06 16:23:21,812 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1069 transitions. Word has length 54 [2021-10-06 16:23:21,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:21,812 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 1069 transitions. [2021-10-06 16:23:21,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 53 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:21,812 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1069 transitions. [2021-10-06 16:23:21,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-06 16:23:21,814 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:21,814 INFO L512 BasicCegarLoop]: trace histogram [51, 1, 1, 1, 1] [2021-10-06 16:23:21,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2021-10-06 16:23:22,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:22,031 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:23:22,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:22,032 INFO L82 PathProgramCache]: Analyzing trace with hash -249772249, now seen corresponding path program 51 times [2021-10-06 16:23:22,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:22,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166256922] [2021-10-06 16:23:22,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:22,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:23,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:23,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:23,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166256922] [2021-10-06 16:23:23,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166256922] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:23,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202922518] [2021-10-06 16:23:23,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:23:23,209 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:23,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:23,210 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:23,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-10-06 16:23:23,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2021-10-06 16:23:23,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:23:23,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 54 conjunts are in the unsatisfiable core [2021-10-06 16:23:23,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:23,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:23,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202922518] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:23,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:23,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 53 [2021-10-06 16:23:23,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394902598] [2021-10-06 16:23:23,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-10-06 16:23:23,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:23,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-10-06 16:23:23,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-10-06 16:23:23,892 INFO L87 Difference]: Start difference. First operand 452 states and 1069 transitions. Second operand has 55 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 54 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:24,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:24,389 INFO L93 Difference]: Finished difference Result 882 states and 2089 transitions. [2021-10-06 16:23:24,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-06 16:23:24,390 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 54 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-10-06 16:23:24,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:24,391 INFO L225 Difference]: With dead ends: 882 [2021-10-06 16:23:24,392 INFO L226 Difference]: Without dead ends: 668 [2021-10-06 16:23:24,392 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1059.7ms TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-10-06 16:23:24,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-10-06 16:23:24,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 460. [2021-10-06 16:23:24,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 457 states have (on average 2.3807439824945296) internal successors, (1088), 459 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:24,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 1088 transitions. [2021-10-06 16:23:24,401 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 1088 transitions. Word has length 55 [2021-10-06 16:23:24,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:24,401 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 1088 transitions. [2021-10-06 16:23:24,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 54 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:24,402 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 1088 transitions. [2021-10-06 16:23:24,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-06 16:23:24,403 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:24,403 INFO L512 BasicCegarLoop]: trace histogram [52, 1, 1, 1, 1] [2021-10-06 16:23:24,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-10-06 16:23:24,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:24,617 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:23:24,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:24,617 INFO L82 PathProgramCache]: Analyzing trace with hash 846996988, now seen corresponding path program 52 times [2021-10-06 16:23:24,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:24,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337584873] [2021-10-06 16:23:24,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:24,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:25,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:25,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:25,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337584873] [2021-10-06 16:23:25,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337584873] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:25,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106052602] [2021-10-06 16:23:25,848 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:23:25,849 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:25,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:25,850 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:25,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-10-06 16:23:26,363 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:23:26,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:23:26,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-06 16:23:26,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:26,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:26,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106052602] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:26,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:26,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 54 [2021-10-06 16:23:26,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952049087] [2021-10-06 16:23:26,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-10-06 16:23:26,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:26,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-10-06 16:23:26,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2021-10-06 16:23:26,517 INFO L87 Difference]: Start difference. First operand 460 states and 1088 transitions. Second operand has 56 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 55 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:27,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:27,014 INFO L93 Difference]: Finished difference Result 898 states and 2127 transitions. [2021-10-06 16:23:27,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-06 16:23:27,015 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 55 states have internal predecessors, (60), 0 states have call successors, (0), 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 56 [2021-10-06 16:23:27,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:27,016 INFO L225 Difference]: With dead ends: 898 [2021-10-06 16:23:27,016 INFO L226 Difference]: Without dead ends: 680 [2021-10-06 16:23:27,017 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1117.4ms TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2021-10-06 16:23:27,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2021-10-06 16:23:27,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 468. [2021-10-06 16:23:27,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 465 states have (on average 2.3806451612903228) internal successors, (1107), 467 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:27,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1107 transitions. [2021-10-06 16:23:27,026 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1107 transitions. Word has length 56 [2021-10-06 16:23:27,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:27,026 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 1107 transitions. [2021-10-06 16:23:27,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 55 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:27,026 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1107 transitions. [2021-10-06 16:23:27,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-06 16:23:27,027 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:27,028 INFO L512 BasicCegarLoop]: trace histogram [53, 1, 1, 1, 1] [2021-10-06 16:23:27,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-10-06 16:23:27,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:27,242 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:23:27,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:27,243 INFO L82 PathProgramCache]: Analyzing trace with hash 487104967, now seen corresponding path program 53 times [2021-10-06 16:23:27,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:27,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275021740] [2021-10-06 16:23:27,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:27,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:28,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:28,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:28,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275021740] [2021-10-06 16:23:28,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275021740] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:28,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640986819] [2021-10-06 16:23:28,646 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:23:28,646 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:28,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:28,647 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:28,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-10-06 16:23:29,197 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2021-10-06 16:23:29,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:23:29,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 56 conjunts are in the unsatisfiable core [2021-10-06 16:23:29,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:29,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:29,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640986819] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:29,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:29,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 55 [2021-10-06 16:23:29,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826967984] [2021-10-06 16:23:29,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-10-06 16:23:29,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:29,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-10-06 16:23:29,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2021-10-06 16:23:29,372 INFO L87 Difference]: Start difference. First operand 468 states and 1107 transitions. Second operand has 57 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 56 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:29,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:29,915 INFO L93 Difference]: Finished difference Result 914 states and 2165 transitions. [2021-10-06 16:23:29,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-06 16:23:29,916 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 56 states have internal predecessors, (61), 0 states have call successors, (0), 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 57 [2021-10-06 16:23:29,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:29,917 INFO L225 Difference]: With dead ends: 914 [2021-10-06 16:23:29,917 INFO L226 Difference]: Without dead ends: 692 [2021-10-06 16:23:29,918 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1226.2ms TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2021-10-06 16:23:29,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2021-10-06 16:23:29,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 476. [2021-10-06 16:23:29,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 473 states have (on average 2.380549682875264) internal successors, (1126), 475 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:29,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 1126 transitions. [2021-10-06 16:23:29,926 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 1126 transitions. Word has length 57 [2021-10-06 16:23:29,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:29,926 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 1126 transitions. [2021-10-06 16:23:29,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 56 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:29,927 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 1126 transitions. [2021-10-06 16:23:29,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-06 16:23:29,928 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:29,928 INFO L512 BasicCegarLoop]: trace histogram [54, 1, 1, 1, 1] [2021-10-06 16:23:29,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2021-10-06 16:23:30,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:30,144 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:23:30,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:30,144 INFO L82 PathProgramCache]: Analyzing trace with hash -2079613092, now seen corresponding path program 54 times [2021-10-06 16:23:30,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:30,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405753841] [2021-10-06 16:23:30,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:30,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:31,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:31,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:31,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405753841] [2021-10-06 16:23:31,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405753841] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:31,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008951516] [2021-10-06 16:23:31,384 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:23:31,384 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:31,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:31,386 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:31,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-10-06 16:23:31,963 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2021-10-06 16:23:31,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:23:31,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-06 16:23:31,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:32,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:32,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008951516] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:32,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:32,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 56 [2021-10-06 16:23:32,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834161364] [2021-10-06 16:23:32,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-10-06 16:23:32,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:32,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-10-06 16:23:32,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-10-06 16:23:32,127 INFO L87 Difference]: Start difference. First operand 476 states and 1126 transitions. Second operand has 58 states, 57 states have (on average 1.087719298245614) internal successors, (62), 57 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:32,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:32,693 INFO L93 Difference]: Finished difference Result 930 states and 2203 transitions. [2021-10-06 16:23:32,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-06 16:23:32,693 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 1.087719298245614) internal successors, (62), 57 states have internal predecessors, (62), 0 states have call successors, (0), 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 58 [2021-10-06 16:23:32,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:32,695 INFO L225 Difference]: With dead ends: 930 [2021-10-06 16:23:32,695 INFO L226 Difference]: Without dead ends: 704 [2021-10-06 16:23:32,695 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1131.4ms TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-10-06 16:23:32,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-10-06 16:23:32,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 484. [2021-10-06 16:23:32,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 481 states have (on average 2.3804573804573805) internal successors, (1145), 483 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:32,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1145 transitions. [2021-10-06 16:23:32,704 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1145 transitions. Word has length 58 [2021-10-06 16:23:32,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:32,704 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 1145 transitions. [2021-10-06 16:23:32,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 1.087719298245614) internal successors, (62), 57 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:32,704 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1145 transitions. [2021-10-06 16:23:32,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-06 16:23:32,706 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:32,706 INFO L512 BasicCegarLoop]: trace histogram [55, 1, 1, 1, 1] [2021-10-06 16:23:32,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2021-10-06 16:23:32,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-10-06 16:23:32,919 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:23:32,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:32,920 INFO L82 PathProgramCache]: Analyzing trace with hash -43494297, now seen corresponding path program 55 times [2021-10-06 16:23:32,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:32,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371405091] [2021-10-06 16:23:32,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:32,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:34,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:34,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:34,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371405091] [2021-10-06 16:23:34,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371405091] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:34,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576288381] [2021-10-06 16:23:34,262 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:23:34,262 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:34,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:34,263 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:34,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-10-06 16:23:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:34,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 58 conjunts are in the unsatisfiable core [2021-10-06 16:23:34,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:34,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:34,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576288381] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:34,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:34,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 57 [2021-10-06 16:23:34,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481926871] [2021-10-06 16:23:34,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-10-06 16:23:34,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:34,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-10-06 16:23:34,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2021-10-06 16:23:34,998 INFO L87 Difference]: Start difference. First operand 484 states and 1145 transitions. Second operand has 59 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:35,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:35,574 INFO L93 Difference]: Finished difference Result 946 states and 2241 transitions. [2021-10-06 16:23:35,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-06 16:23:35,574 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 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 59 [2021-10-06 16:23:35,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:35,576 INFO L225 Difference]: With dead ends: 946 [2021-10-06 16:23:35,576 INFO L226 Difference]: Without dead ends: 716 [2021-10-06 16:23:35,576 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1225.0ms TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2021-10-06 16:23:35,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-10-06 16:23:35,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 492. [2021-10-06 16:23:35,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 489 states have (on average 2.3803680981595092) internal successors, (1164), 491 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:35,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1164 transitions. [2021-10-06 16:23:35,584 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1164 transitions. Word has length 59 [2021-10-06 16:23:35,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:35,584 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 1164 transitions. [2021-10-06 16:23:35,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:35,584 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1164 transitions. [2021-10-06 16:23:35,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-06 16:23:35,585 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:35,585 INFO L512 BasicCegarLoop]: trace histogram [56, 1, 1, 1, 1] [2021-10-06 16:23:35,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-10-06 16:23:35,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:35,786 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:23:35,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:35,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1348321092, now seen corresponding path program 56 times [2021-10-06 16:23:35,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:35,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023442288] [2021-10-06 16:23:35,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:35,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:37,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:37,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:37,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023442288] [2021-10-06 16:23:37,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023442288] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:37,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133579547] [2021-10-06 16:23:37,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:23:37,187 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:37,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:37,188 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:37,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-06 16:23:37,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:23:37,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:23:37,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 59 conjunts are in the unsatisfiable core [2021-10-06 16:23:37,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:37,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:37,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133579547] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:37,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:37,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 58 [2021-10-06 16:23:37,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56150135] [2021-10-06 16:23:37,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-10-06 16:23:37,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:37,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-10-06 16:23:37,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2021-10-06 16:23:37,935 INFO L87 Difference]: Start difference. First operand 492 states and 1164 transitions. Second operand has 60 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 59 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:38,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:38,538 INFO L93 Difference]: Finished difference Result 962 states and 2279 transitions. [2021-10-06 16:23:38,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-06 16:23:38,539 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 59 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-06 16:23:38,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:38,540 INFO L225 Difference]: With dead ends: 962 [2021-10-06 16:23:38,541 INFO L226 Difference]: Without dead ends: 728 [2021-10-06 16:23:38,541 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1269.1ms TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2021-10-06 16:23:38,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2021-10-06 16:23:38,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 500. [2021-10-06 16:23:38,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 497 states have (on average 2.380281690140845) internal successors, (1183), 499 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:38,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 1183 transitions. [2021-10-06 16:23:38,550 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 1183 transitions. Word has length 60 [2021-10-06 16:23:38,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:38,550 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 1183 transitions. [2021-10-06 16:23:38,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 59 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:38,551 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 1183 transitions. [2021-10-06 16:23:38,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-06 16:23:38,552 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:38,552 INFO L512 BasicCegarLoop]: trace histogram [57, 1, 1, 1, 1] [2021-10-06 16:23:38,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-10-06 16:23:38,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-10-06 16:23:38,765 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:23:38,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:38,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1151721223, now seen corresponding path program 57 times [2021-10-06 16:23:38,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:38,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630606279] [2021-10-06 16:23:38,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:38,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:40,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:40,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:40,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630606279] [2021-10-06 16:23:40,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630606279] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:40,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758395586] [2021-10-06 16:23:40,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:23:40,198 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:40,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:40,201 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:40,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-10-06 16:23:40,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2021-10-06 16:23:40,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:23:40,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 60 conjunts are in the unsatisfiable core [2021-10-06 16:23:40,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:41,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:41,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758395586] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:41,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:41,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 59 [2021-10-06 16:23:41,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744625749] [2021-10-06 16:23:41,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-10-06 16:23:41,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:41,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-10-06 16:23:41,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2021-10-06 16:23:41,015 INFO L87 Difference]: Start difference. First operand 500 states and 1183 transitions. Second operand has 61 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 60 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:41,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:41,702 INFO L93 Difference]: Finished difference Result 978 states and 2317 transitions. [2021-10-06 16:23:41,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-06 16:23:41,702 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 60 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-10-06 16:23:41,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:41,704 INFO L225 Difference]: With dead ends: 978 [2021-10-06 16:23:41,704 INFO L226 Difference]: Without dead ends: 740 [2021-10-06 16:23:41,704 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1310.0ms TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2021-10-06 16:23:41,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2021-10-06 16:23:41,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 508. [2021-10-06 16:23:41,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 505 states have (on average 2.38019801980198) internal successors, (1202), 507 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:41,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 1202 transitions. [2021-10-06 16:23:41,713 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 1202 transitions. Word has length 61 [2021-10-06 16:23:41,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:41,714 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 1202 transitions. [2021-10-06 16:23:41,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 60 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:41,714 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 1202 transitions. [2021-10-06 16:23:41,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-06 16:23:41,715 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:41,715 INFO L512 BasicCegarLoop]: trace histogram [58, 1, 1, 1, 1] [2021-10-06 16:23:41,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2021-10-06 16:23:41,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-10-06 16:23:41,916 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:23:41,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:41,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1343621660, now seen corresponding path program 58 times [2021-10-06 16:23:41,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:41,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295882791] [2021-10-06 16:23:41,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:41,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:43,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:43,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:43,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295882791] [2021-10-06 16:23:43,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295882791] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:43,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744924343] [2021-10-06 16:23:43,412 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:23:43,412 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:43,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:43,415 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:43,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-06 16:23:44,045 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:23:44,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:23:44,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 61 conjunts are in the unsatisfiable core [2021-10-06 16:23:44,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:44,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:44,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744924343] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:44,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:44,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 60 [2021-10-06 16:23:44,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860303372] [2021-10-06 16:23:44,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-10-06 16:23:44,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:44,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-10-06 16:23:44,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2021-10-06 16:23:44,190 INFO L87 Difference]: Start difference. First operand 508 states and 1202 transitions. Second operand has 62 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 61 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:44,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:44,872 INFO L93 Difference]: Finished difference Result 994 states and 2355 transitions. [2021-10-06 16:23:44,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-06 16:23:44,872 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 61 states have internal predecessors, (66), 0 states have call successors, (0), 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 62 [2021-10-06 16:23:44,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:44,874 INFO L225 Difference]: With dead ends: 994 [2021-10-06 16:23:44,874 INFO L226 Difference]: Without dead ends: 752 [2021-10-06 16:23:44,874 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1368.4ms TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2021-10-06 16:23:44,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-10-06 16:23:44,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 516. [2021-10-06 16:23:44,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 513 states have (on average 2.3801169590643276) internal successors, (1221), 515 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:44,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1221 transitions. [2021-10-06 16:23:44,882 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1221 transitions. Word has length 62 [2021-10-06 16:23:44,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:44,883 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 1221 transitions. [2021-10-06 16:23:44,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 61 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:44,883 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1221 transitions. [2021-10-06 16:23:44,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-06 16:23:44,884 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:44,884 INFO L512 BasicCegarLoop]: trace histogram [59, 1, 1, 1, 1] [2021-10-06 16:23:44,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-10-06 16:23:45,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-10-06 16:23:45,085 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:23:45,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:45,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1297399385, now seen corresponding path program 59 times [2021-10-06 16:23:45,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:45,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276509186] [2021-10-06 16:23:45,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:45,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:46,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:46,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276509186] [2021-10-06 16:23:46,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276509186] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:46,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788231380] [2021-10-06 16:23:46,652 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:23:46,653 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:46,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:46,654 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:46,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-06 16:23:47,303 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2021-10-06 16:23:47,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:23:47,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 62 conjunts are in the unsatisfiable core [2021-10-06 16:23:47,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:47,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:47,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788231380] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:47,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:47,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 61 [2021-10-06 16:23:47,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923973414] [2021-10-06 16:23:47,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-10-06 16:23:47,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:47,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-10-06 16:23:47,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2021-10-06 16:23:47,458 INFO L87 Difference]: Start difference. First operand 516 states and 1221 transitions. Second operand has 63 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 62 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:48,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:48,147 INFO L93 Difference]: Finished difference Result 1010 states and 2393 transitions. [2021-10-06 16:23:48,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-06 16:23:48,148 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 62 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-10-06 16:23:48,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:48,150 INFO L225 Difference]: With dead ends: 1010 [2021-10-06 16:23:48,151 INFO L226 Difference]: Without dead ends: 764 [2021-10-06 16:23:48,151 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1438.2ms TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2021-10-06 16:23:48,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-10-06 16:23:48,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 524. [2021-10-06 16:23:48,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 521 states have (on average 2.380038387715931) internal successors, (1240), 523 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:48,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1240 transitions. [2021-10-06 16:23:48,161 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1240 transitions. Word has length 63 [2021-10-06 16:23:48,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:48,161 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 1240 transitions. [2021-10-06 16:23:48,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 62 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:48,161 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1240 transitions. [2021-10-06 16:23:48,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-06 16:23:48,162 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:48,162 INFO L512 BasicCegarLoop]: trace histogram [60, 1, 1, 1, 1] [2021-10-06 16:23:48,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-10-06 16:23:48,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:48,363 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:23:48,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:48,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1564673156, now seen corresponding path program 60 times [2021-10-06 16:23:48,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:48,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579534724] [2021-10-06 16:23:48,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:48,365 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:49,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:49,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:49,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579534724] [2021-10-06 16:23:49,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579534724] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:49,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374773296] [2021-10-06 16:23:49,996 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:23:49,996 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:49,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:49,999 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:50,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-06 16:23:50,683 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-10-06 16:23:50,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:23:50,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 63 conjunts are in the unsatisfiable core [2021-10-06 16:23:50,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:50,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:50,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374773296] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:50,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:50,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 62 [2021-10-06 16:23:50,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939513383] [2021-10-06 16:23:50,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-10-06 16:23:50,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:50,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-10-06 16:23:50,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-10-06 16:23:50,856 INFO L87 Difference]: Start difference. First operand 524 states and 1240 transitions. Second operand has 64 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 63 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:51,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:51,603 INFO L93 Difference]: Finished difference Result 1026 states and 2431 transitions. [2021-10-06 16:23:51,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-06 16:23:51,604 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 63 states have internal predecessors, (68), 0 states have call successors, (0), 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 64 [2021-10-06 16:23:51,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:51,610 INFO L225 Difference]: With dead ends: 1026 [2021-10-06 16:23:51,610 INFO L226 Difference]: Without dead ends: 776 [2021-10-06 16:23:51,611 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1494.0ms TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-10-06 16:23:51,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2021-10-06 16:23:51,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 532. [2021-10-06 16:23:51,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 529 states have (on average 2.379962192816635) internal successors, (1259), 531 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:51,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 1259 transitions. [2021-10-06 16:23:51,624 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 1259 transitions. Word has length 64 [2021-10-06 16:23:51,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:51,624 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 1259 transitions. [2021-10-06 16:23:51,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 63 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:51,624 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 1259 transitions. [2021-10-06 16:23:51,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-06 16:23:51,626 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:51,626 INFO L512 BasicCegarLoop]: trace histogram [61, 1, 1, 1, 1] [2021-10-06 16:23:51,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-10-06 16:23:51,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2021-10-06 16:23:51,842 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:23:51,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:51,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1260225465, now seen corresponding path program 61 times [2021-10-06 16:23:51,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:51,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336703682] [2021-10-06 16:23:51,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:51,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:53,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:53,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:53,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336703682] [2021-10-06 16:23:53,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336703682] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:53,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528172069] [2021-10-06 16:23:53,531 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:23:53,531 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:53,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:53,532 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:53,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-06 16:23:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:54,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 64 conjunts are in the unsatisfiable core [2021-10-06 16:23:54,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:54,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:54,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528172069] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:54,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:54,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 63 [2021-10-06 16:23:54,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735831180] [2021-10-06 16:23:54,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-10-06 16:23:54,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:54,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-10-06 16:23:54,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2021-10-06 16:23:54,391 INFO L87 Difference]: Start difference. First operand 532 states and 1259 transitions. Second operand has 65 states, 64 states have (on average 1.078125) internal successors, (69), 64 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:55,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:55,205 INFO L93 Difference]: Finished difference Result 1042 states and 2469 transitions. [2021-10-06 16:23:55,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-10-06 16:23:55,206 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 1.078125) internal successors, (69), 64 states have internal predecessors, (69), 0 states have call successors, (0), 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 65 [2021-10-06 16:23:55,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:55,208 INFO L225 Difference]: With dead ends: 1042 [2021-10-06 16:23:55,208 INFO L226 Difference]: Without dead ends: 788 [2021-10-06 16:23:55,209 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1540.6ms TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2021-10-06 16:23:55,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2021-10-06 16:23:55,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 540. [2021-10-06 16:23:55,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 537 states have (on average 2.3798882681564244) internal successors, (1278), 539 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:55,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 1278 transitions. [2021-10-06 16:23:55,222 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 1278 transitions. Word has length 65 [2021-10-06 16:23:55,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:55,222 INFO L470 AbstractCegarLoop]: Abstraction has 540 states and 1278 transitions. [2021-10-06 16:23:55,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 1.078125) internal successors, (69), 64 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:55,222 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 1278 transitions. [2021-10-06 16:23:55,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-06 16:23:55,224 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:55,224 INFO L512 BasicCegarLoop]: trace histogram [62, 1, 1, 1, 1] [2021-10-06 16:23:55,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-10-06 16:23:55,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:55,439 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:23:55,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:55,439 INFO L82 PathProgramCache]: Analyzing trace with hash -412281636, now seen corresponding path program 62 times [2021-10-06 16:23:55,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:55,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271625098] [2021-10-06 16:23:55,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:55,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:23:57,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:57,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:23:57,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271625098] [2021-10-06 16:23:57,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271625098] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:57,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325705584] [2021-10-06 16:23:57,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:23:57,133 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:57,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:23:57,135 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:23:57,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-06 16:23:57,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:23:57,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:23:57,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-06 16:23:57,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:23:57,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:23:57,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325705584] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:23:57,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:23:57,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 64 [2021-10-06 16:23:57,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299558825] [2021-10-06 16:23:57,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-10-06 16:23:57,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:23:57,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-10-06 16:23:57,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-10-06 16:23:57,995 INFO L87 Difference]: Start difference. First operand 540 states and 1278 transitions. Second operand has 66 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 65 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:58,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:23:58,792 INFO L93 Difference]: Finished difference Result 1058 states and 2507 transitions. [2021-10-06 16:23:58,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-10-06 16:23:58,792 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 65 states have internal predecessors, (70), 0 states have call successors, (0), 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 66 [2021-10-06 16:23:58,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:23:58,794 INFO L225 Difference]: With dead ends: 1058 [2021-10-06 16:23:58,794 INFO L226 Difference]: Without dead ends: 800 [2021-10-06 16:23:58,795 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1559.1ms TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-10-06 16:23:58,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2021-10-06 16:23:58,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 548. [2021-10-06 16:23:58,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 545 states have (on average 2.379816513761468) internal successors, (1297), 547 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:58,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 1297 transitions. [2021-10-06 16:23:58,805 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 1297 transitions. Word has length 66 [2021-10-06 16:23:58,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:23:58,806 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 1297 transitions. [2021-10-06 16:23:58,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 65 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:23:58,806 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 1297 transitions. [2021-10-06 16:23:58,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-06 16:23:58,807 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:23:58,807 INFO L512 BasicCegarLoop]: trace histogram [63, 1, 1, 1, 1] [2021-10-06 16:23:58,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2021-10-06 16:23:59,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:23:59,008 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:23:59,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:23:59,009 INFO L82 PathProgramCache]: Analyzing trace with hash 104173287, now seen corresponding path program 63 times [2021-10-06 16:23:59,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:23:59,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534037416] [2021-10-06 16:23:59,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:23:59,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:23:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:24:00,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:00,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:24:00,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534037416] [2021-10-06 16:24:00,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534037416] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:00,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988543991] [2021-10-06 16:24:00,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:24:00,806 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:00,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:24:00,807 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:24:00,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-10-06 16:24:01,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2021-10-06 16:24:01,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:24:01,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 66 conjunts are in the unsatisfiable core [2021-10-06 16:24:01,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:24:01,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:01,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988543991] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:01,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:24:01,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 65 [2021-10-06 16:24:01,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461240215] [2021-10-06 16:24:01,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-10-06 16:24:01,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:24:01,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-10-06 16:24:01,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-10-06 16:24:01,750 INFO L87 Difference]: Start difference. First operand 548 states and 1297 transitions. Second operand has 67 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 66 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:02,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:24:02,533 INFO L93 Difference]: Finished difference Result 1074 states and 2545 transitions. [2021-10-06 16:24:02,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-10-06 16:24:02,533 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 66 states have internal predecessors, (71), 0 states have call successors, (0), 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 67 [2021-10-06 16:24:02,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:24:02,541 INFO L225 Difference]: With dead ends: 1074 [2021-10-06 16:24:02,541 INFO L226 Difference]: Without dead ends: 812 [2021-10-06 16:24:02,541 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1650.2ms TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-10-06 16:24:02,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2021-10-06 16:24:02,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 556. [2021-10-06 16:24:02,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 553 states have (on average 2.3797468354430378) internal successors, (1316), 555 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:02,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1316 transitions. [2021-10-06 16:24:02,555 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1316 transitions. Word has length 67 [2021-10-06 16:24:02,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:24:02,555 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 1316 transitions. [2021-10-06 16:24:02,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 66 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:02,555 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1316 transitions. [2021-10-06 16:24:02,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-06 16:24:02,557 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:24:02,557 INFO L512 BasicCegarLoop]: trace histogram [64, 1, 1, 1, 1] [2021-10-06 16:24:02,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2021-10-06 16:24:02,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2021-10-06 16:24:02,773 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:24:02,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:24:02,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1065593284, now seen corresponding path program 64 times [2021-10-06 16:24:02,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:24:02,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460954881] [2021-10-06 16:24:02,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:24:02,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:24:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:24:04,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:04,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:24:04,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460954881] [2021-10-06 16:24:04,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460954881] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:04,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21411421] [2021-10-06 16:24:04,612 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:24:04,612 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:04,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:24:04,613 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:24:04,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-10-06 16:24:05,344 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:24:05,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:24:05,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 67 conjunts are in the unsatisfiable core [2021-10-06 16:24:05,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:24:05,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:05,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21411421] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:05,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:24:05,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 66 [2021-10-06 16:24:05,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250924139] [2021-10-06 16:24:05,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-10-06 16:24:05,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:24:05,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-10-06 16:24:05,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2021-10-06 16:24:05,525 INFO L87 Difference]: Start difference. First operand 556 states and 1316 transitions. Second operand has 68 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 67 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:06,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:24:06,333 INFO L93 Difference]: Finished difference Result 1090 states and 2583 transitions. [2021-10-06 16:24:06,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-10-06 16:24:06,334 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 67 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-10-06 16:24:06,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:24:06,336 INFO L225 Difference]: With dead ends: 1090 [2021-10-06 16:24:06,336 INFO L226 Difference]: Without dead ends: 824 [2021-10-06 16:24:06,336 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1684.6ms TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2021-10-06 16:24:06,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2021-10-06 16:24:06,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 564. [2021-10-06 16:24:06,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 561 states have (on average 2.379679144385027) internal successors, (1335), 563 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:06,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 1335 transitions. [2021-10-06 16:24:06,350 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 1335 transitions. Word has length 68 [2021-10-06 16:24:06,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:24:06,350 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 1335 transitions. [2021-10-06 16:24:06,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 67 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:06,351 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 1335 transitions. [2021-10-06 16:24:06,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-06 16:24:06,352 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:24:06,352 INFO L512 BasicCegarLoop]: trace histogram [65, 1, 1, 1, 1] [2021-10-06 16:24:06,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2021-10-06 16:24:06,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:06,567 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:24:06,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:24:06,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1326348679, now seen corresponding path program 65 times [2021-10-06 16:24:06,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:24:06,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657693794] [2021-10-06 16:24:06,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:24:06,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:24:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:24:08,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:08,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:24:08,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657693794] [2021-10-06 16:24:08,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657693794] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:08,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277601846] [2021-10-06 16:24:08,478 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:24:08,478 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:08,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:24:08,479 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:24:08,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-10-06 16:24:09,253 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2021-10-06 16:24:09,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:24:09,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 68 conjunts are in the unsatisfiable core [2021-10-06 16:24:09,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:24:09,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:09,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277601846] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:09,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:24:09,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 67 [2021-10-06 16:24:09,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999370342] [2021-10-06 16:24:09,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-10-06 16:24:09,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:24:09,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-10-06 16:24:09,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2021-10-06 16:24:09,442 INFO L87 Difference]: Start difference. First operand 564 states and 1335 transitions. Second operand has 69 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 68 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:10,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:24:10,533 INFO L93 Difference]: Finished difference Result 1106 states and 2621 transitions. [2021-10-06 16:24:10,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-10-06 16:24:10,533 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 68 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-10-06 16:24:10,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:24:10,535 INFO L225 Difference]: With dead ends: 1106 [2021-10-06 16:24:10,535 INFO L226 Difference]: Without dead ends: 836 [2021-10-06 16:24:10,535 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1751.9ms TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2021-10-06 16:24:10,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2021-10-06 16:24:10,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 572. [2021-10-06 16:24:10,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 569 states have (on average 2.3796133567662565) internal successors, (1354), 571 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:10,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 1354 transitions. [2021-10-06 16:24:10,544 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 1354 transitions. Word has length 69 [2021-10-06 16:24:10,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:24:10,544 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 1354 transitions. [2021-10-06 16:24:10,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 68 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:10,545 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 1354 transitions. [2021-10-06 16:24:10,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-06 16:24:10,545 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:24:10,546 INFO L512 BasicCegarLoop]: trace histogram [66, 1, 1, 1, 1] [2021-10-06 16:24:10,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2021-10-06 16:24:10,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2021-10-06 16:24:10,746 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:24:10,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:24:10,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1832861796, now seen corresponding path program 66 times [2021-10-06 16:24:10,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:24:10,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250023071] [2021-10-06 16:24:10,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:24:10,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:24:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:24:12,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:12,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:24:12,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250023071] [2021-10-06 16:24:12,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250023071] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:12,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054195815] [2021-10-06 16:24:12,694 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:24:12,694 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:12,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:24:12,695 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:24:12,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-10-06 16:24:13,505 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2021-10-06 16:24:13,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:24:13,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 69 conjunts are in the unsatisfiable core [2021-10-06 16:24:13,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:24:13,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:13,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054195815] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:13,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:24:13,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 68 [2021-10-06 16:24:13,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944749694] [2021-10-06 16:24:13,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-10-06 16:24:13,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:24:13,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-10-06 16:24:13,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-10-06 16:24:13,688 INFO L87 Difference]: Start difference. First operand 572 states and 1354 transitions. Second operand has 70 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 69 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:14,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:24:14,585 INFO L93 Difference]: Finished difference Result 1122 states and 2659 transitions. [2021-10-06 16:24:14,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-10-06 16:24:14,585 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 69 states have internal predecessors, (74), 0 states have call successors, (0), 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 70 [2021-10-06 16:24:14,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:24:14,587 INFO L225 Difference]: With dead ends: 1122 [2021-10-06 16:24:14,587 INFO L226 Difference]: Without dead ends: 848 [2021-10-06 16:24:14,587 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1812.6ms TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-10-06 16:24:14,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2021-10-06 16:24:14,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 580. [2021-10-06 16:24:14,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 577 states have (on average 2.3795493934142113) internal successors, (1373), 579 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:14,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1373 transitions. [2021-10-06 16:24:14,596 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1373 transitions. Word has length 70 [2021-10-06 16:24:14,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:24:14,597 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 1373 transitions. [2021-10-06 16:24:14,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 69 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:14,597 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1373 transitions. [2021-10-06 16:24:14,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-06 16:24:14,598 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:24:14,599 INFO L512 BasicCegarLoop]: trace histogram [67, 1, 1, 1, 1] [2021-10-06 16:24:14,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2021-10-06 16:24:14,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:14,814 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:24:14,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:24:14,815 INFO L82 PathProgramCache]: Analyzing trace with hash -984138713, now seen corresponding path program 67 times [2021-10-06 16:24:14,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:24:14,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862287330] [2021-10-06 16:24:14,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:24:14,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:24:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:24:16,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:16,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:24:16,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862287330] [2021-10-06 16:24:16,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862287330] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:16,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775900877] [2021-10-06 16:24:16,791 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:24:16,791 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:16,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:24:16,793 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:24:16,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-10-06 16:24:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:24:17,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 70 conjunts are in the unsatisfiable core [2021-10-06 16:24:17,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:24:17,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:17,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775900877] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:17,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:24:17,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 69 [2021-10-06 16:24:17,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347673541] [2021-10-06 16:24:17,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-10-06 16:24:17,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:24:17,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-10-06 16:24:17,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2021-10-06 16:24:17,782 INFO L87 Difference]: Start difference. First operand 580 states and 1373 transitions. Second operand has 71 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 70 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:18,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:24:18,738 INFO L93 Difference]: Finished difference Result 1138 states and 2697 transitions. [2021-10-06 16:24:18,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-10-06 16:24:18,739 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 70 states have internal predecessors, (75), 0 states have call successors, (0), 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 71 [2021-10-06 16:24:18,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:24:18,740 INFO L225 Difference]: With dead ends: 1138 [2021-10-06 16:24:18,740 INFO L226 Difference]: Without dead ends: 860 [2021-10-06 16:24:18,741 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1830.9ms TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2021-10-06 16:24:18,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2021-10-06 16:24:18,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 588. [2021-10-06 16:24:18,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 585 states have (on average 2.3794871794871795) internal successors, (1392), 587 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:18,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1392 transitions. [2021-10-06 16:24:18,750 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1392 transitions. Word has length 71 [2021-10-06 16:24:18,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:24:18,750 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 1392 transitions. [2021-10-06 16:24:18,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 70 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:18,750 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1392 transitions. [2021-10-06 16:24:18,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-06 16:24:18,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:24:18,752 INFO L512 BasicCegarLoop]: trace histogram [68, 1, 1, 1, 1] [2021-10-06 16:24:18,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2021-10-06 16:24:18,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-10-06 16:24:18,953 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:24:18,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:24:18,954 INFO L82 PathProgramCache]: Analyzing trace with hash -443526916, now seen corresponding path program 68 times [2021-10-06 16:24:18,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:24:18,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642872700] [2021-10-06 16:24:18,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:24:18,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:24:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:24:20,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:20,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:24:20,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642872700] [2021-10-06 16:24:20,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642872700] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:20,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563445422] [2021-10-06 16:24:20,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:24:20,996 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:20,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:24:20,998 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:24:20,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-10-06 16:24:21,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:24:21,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:24:21,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 71 conjunts are in the unsatisfiable core [2021-10-06 16:24:21,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:24:22,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:22,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563445422] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:22,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:24:22,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 70 [2021-10-06 16:24:22,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095929636] [2021-10-06 16:24:22,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2021-10-06 16:24:22,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:24:22,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-10-06 16:24:22,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2021-10-06 16:24:22,008 INFO L87 Difference]: Start difference. First operand 588 states and 1392 transitions. Second operand has 72 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 71 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:23,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:24:23,004 INFO L93 Difference]: Finished difference Result 1154 states and 2735 transitions. [2021-10-06 16:24:23,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-10-06 16:24:23,005 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 71 states have internal predecessors, (76), 0 states have call successors, (0), 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 72 [2021-10-06 16:24:23,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:24:23,006 INFO L225 Difference]: With dead ends: 1154 [2021-10-06 16:24:23,006 INFO L226 Difference]: Without dead ends: 872 [2021-10-06 16:24:23,007 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1899.7ms TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2021-10-06 16:24:23,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-10-06 16:24:23,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 596. [2021-10-06 16:24:23,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 593 states have (on average 2.3794266441821246) internal successors, (1411), 595 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:23,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 1411 transitions. [2021-10-06 16:24:23,016 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 1411 transitions. Word has length 72 [2021-10-06 16:24:23,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:24:23,016 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 1411 transitions. [2021-10-06 16:24:23,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 71 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:23,016 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 1411 transitions. [2021-10-06 16:24:23,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-06 16:24:23,018 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:24:23,018 INFO L512 BasicCegarLoop]: trace histogram [69, 1, 1, 1, 1] [2021-10-06 16:24:23,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2021-10-06 16:24:23,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-10-06 16:24:23,232 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:24:23,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:24:23,232 INFO L82 PathProgramCache]: Analyzing trace with hash -864430393, now seen corresponding path program 69 times [2021-10-06 16:24:23,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:24:23,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490076947] [2021-10-06 16:24:23,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:24:23,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:24:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:24:25,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:25,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:24:25,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490076947] [2021-10-06 16:24:25,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490076947] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:25,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751035629] [2021-10-06 16:24:25,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:24:25,344 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:25,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:24:25,345 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:24:25,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-10-06 16:24:26,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2021-10-06 16:24:26,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:24:26,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 72 conjunts are in the unsatisfiable core [2021-10-06 16:24:26,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:24:26,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:26,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751035629] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:26,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:24:26,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 71 [2021-10-06 16:24:26,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946247] [2021-10-06 16:24:26,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2021-10-06 16:24:26,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:24:26,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-10-06 16:24:26,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2021-10-06 16:24:26,413 INFO L87 Difference]: Start difference. First operand 596 states and 1411 transitions. Second operand has 73 states, 72 states have (on average 1.0694444444444444) internal successors, (77), 72 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:27,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:24:27,475 INFO L93 Difference]: Finished difference Result 1170 states and 2773 transitions. [2021-10-06 16:24:27,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-10-06 16:24:27,476 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 72 states have (on average 1.0694444444444444) internal successors, (77), 72 states have internal predecessors, (77), 0 states have call successors, (0), 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 73 [2021-10-06 16:24:27,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:24:27,477 INFO L225 Difference]: With dead ends: 1170 [2021-10-06 16:24:27,477 INFO L226 Difference]: Without dead ends: 884 [2021-10-06 16:24:27,478 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1967.2ms TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2021-10-06 16:24:27,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2021-10-06 16:24:27,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 604. [2021-10-06 16:24:27,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 601 states have (on average 2.3793677204658903) internal successors, (1430), 603 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:27,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 1430 transitions. [2021-10-06 16:24:27,489 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 1430 transitions. Word has length 73 [2021-10-06 16:24:27,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:24:27,489 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 1430 transitions. [2021-10-06 16:24:27,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 72 states have (on average 1.0694444444444444) internal successors, (77), 72 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:27,490 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 1430 transitions. [2021-10-06 16:24:27,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-06 16:24:27,491 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:24:27,491 INFO L512 BasicCegarLoop]: trace histogram [70, 1, 1, 1, 1] [2021-10-06 16:24:27,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2021-10-06 16:24:27,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-10-06 16:24:27,692 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:24:27,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:24:27,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1027536292, now seen corresponding path program 70 times [2021-10-06 16:24:27,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:24:27,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011068073] [2021-10-06 16:24:27,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:24:27,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:24:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:24:29,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:29,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:24:29,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011068073] [2021-10-06 16:24:29,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011068073] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:29,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537724083] [2021-10-06 16:24:29,863 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:24:29,863 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:29,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:24:29,864 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:24:29,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-10-06 16:24:30,719 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:24:30,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:24:30,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 73 conjunts are in the unsatisfiable core [2021-10-06 16:24:30,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:24:30,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:30,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537724083] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:30,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:24:30,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 72 [2021-10-06 16:24:30,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522881552] [2021-10-06 16:24:30,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2021-10-06 16:24:30,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:24:30,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-10-06 16:24:30,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2021-10-06 16:24:30,908 INFO L87 Difference]: Start difference. First operand 604 states and 1430 transitions. Second operand has 74 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 73 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:31,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:24:31,985 INFO L93 Difference]: Finished difference Result 1186 states and 2811 transitions. [2021-10-06 16:24:31,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-10-06 16:24:31,986 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 73 states have internal predecessors, (78), 0 states have call successors, (0), 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 74 [2021-10-06 16:24:31,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:24:31,987 INFO L225 Difference]: With dead ends: 1186 [2021-10-06 16:24:31,987 INFO L226 Difference]: Without dead ends: 896 [2021-10-06 16:24:31,987 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 2000.1ms TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2021-10-06 16:24:31,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2021-10-06 16:24:31,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 612. [2021-10-06 16:24:31,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 609 states have (on average 2.3793103448275863) internal successors, (1449), 611 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:31,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 1449 transitions. [2021-10-06 16:24:31,999 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 1449 transitions. Word has length 74 [2021-10-06 16:24:31,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:24:31,999 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 1449 transitions. [2021-10-06 16:24:31,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 73 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:31,999 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 1449 transitions. [2021-10-06 16:24:32,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-06 16:24:32,000 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:24:32,000 INFO L512 BasicCegarLoop]: trace histogram [71, 1, 1, 1, 1] [2021-10-06 16:24:32,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2021-10-06 16:24:32,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:32,201 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:24:32,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:24:32,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1788851865, now seen corresponding path program 71 times [2021-10-06 16:24:32,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:24:32,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683256303] [2021-10-06 16:24:32,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:24:32,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:24:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:24:34,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:34,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:24:34,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683256303] [2021-10-06 16:24:34,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683256303] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:34,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637574207] [2021-10-06 16:24:34,411 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:24:34,411 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:34,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:24:34,412 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:24:34,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-10-06 16:24:35,305 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2021-10-06 16:24:35,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:24:35,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 74 conjunts are in the unsatisfiable core [2021-10-06 16:24:35,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:24:35,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:35,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637574207] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:35,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:24:35,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 73 [2021-10-06 16:24:35,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212463239] [2021-10-06 16:24:35,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2021-10-06 16:24:35,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:24:35,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-10-06 16:24:35,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2021-10-06 16:24:35,501 INFO L87 Difference]: Start difference. First operand 612 states and 1449 transitions. Second operand has 75 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 74 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:36,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:24:36,653 INFO L93 Difference]: Finished difference Result 1202 states and 2849 transitions. [2021-10-06 16:24:36,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-10-06 16:24:36,653 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 74 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-10-06 16:24:36,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:24:36,655 INFO L225 Difference]: With dead ends: 1202 [2021-10-06 16:24:36,655 INFO L226 Difference]: Without dead ends: 908 [2021-10-06 16:24:36,655 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 2062.9ms TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2021-10-06 16:24:36,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-10-06 16:24:36,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 620. [2021-10-06 16:24:36,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 617 states have (on average 2.379254457050243) internal successors, (1468), 619 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:36,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 1468 transitions. [2021-10-06 16:24:36,666 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 1468 transitions. Word has length 75 [2021-10-06 16:24:36,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:24:36,666 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 1468 transitions. [2021-10-06 16:24:36,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 74 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:36,667 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 1468 transitions. [2021-10-06 16:24:36,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-06 16:24:36,668 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:24:36,668 INFO L512 BasicCegarLoop]: trace histogram [72, 1, 1, 1, 1] [2021-10-06 16:24:36,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2021-10-06 16:24:36,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:36,882 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:24:36,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:24:36,883 INFO L82 PathProgramCache]: Analyzing trace with hash 380169148, now seen corresponding path program 72 times [2021-10-06 16:24:36,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:24:36,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441949239] [2021-10-06 16:24:36,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:24:36,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:24:36,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:24:39,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:39,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:24:39,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441949239] [2021-10-06 16:24:39,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441949239] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:39,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305401016] [2021-10-06 16:24:39,175 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:24:39,175 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:39,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:24:39,176 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:24:39,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-10-06 16:24:40,117 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-10-06 16:24:40,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:24:40,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 75 conjunts are in the unsatisfiable core [2021-10-06 16:24:40,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:24:40,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:40,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305401016] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:40,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:24:40,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 74 [2021-10-06 16:24:40,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434809762] [2021-10-06 16:24:40,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-10-06 16:24:40,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:24:40,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-10-06 16:24:40,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-10-06 16:24:40,321 INFO L87 Difference]: Start difference. First operand 620 states and 1468 transitions. Second operand has 76 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 75 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:41,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:24:41,485 INFO L93 Difference]: Finished difference Result 1218 states and 2887 transitions. [2021-10-06 16:24:41,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-10-06 16:24:41,486 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 75 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-10-06 16:24:41,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:24:41,487 INFO L225 Difference]: With dead ends: 1218 [2021-10-06 16:24:41,487 INFO L226 Difference]: Without dead ends: 920 [2021-10-06 16:24:41,488 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 2135.7ms TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-10-06 16:24:41,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-10-06 16:24:41,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 628. [2021-10-06 16:24:41,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 625 states have (on average 2.3792) internal successors, (1487), 627 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:41,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1487 transitions. [2021-10-06 16:24:41,497 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1487 transitions. Word has length 76 [2021-10-06 16:24:41,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:24:41,497 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 1487 transitions. [2021-10-06 16:24:41,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 75 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:41,498 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1487 transitions. [2021-10-06 16:24:41,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-06 16:24:41,499 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:24:41,499 INFO L512 BasicCegarLoop]: trace histogram [73, 1, 1, 1, 1] [2021-10-06 16:24:41,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2021-10-06 16:24:41,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:41,700 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:24:41,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:24:41,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1099656185, now seen corresponding path program 73 times [2021-10-06 16:24:41,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:24:41,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58701891] [2021-10-06 16:24:41,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:24:41,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:24:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:24:43,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:43,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:24:43,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58701891] [2021-10-06 16:24:43,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58701891] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:43,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019024205] [2021-10-06 16:24:43,993 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:24:43,994 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:43,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:24:43,995 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:24:43,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-10-06 16:24:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:24:44,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 76 conjunts are in the unsatisfiable core [2021-10-06 16:24:44,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:24:45,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:45,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019024205] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:45,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:24:45,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 75 [2021-10-06 16:24:45,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321428480] [2021-10-06 16:24:45,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2021-10-06 16:24:45,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:24:45,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-10-06 16:24:45,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-10-06 16:24:45,115 INFO L87 Difference]: Start difference. First operand 628 states and 1487 transitions. Second operand has 77 states, 76 states have (on average 1.0657894736842106) internal successors, (81), 76 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:46,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:24:46,280 INFO L93 Difference]: Finished difference Result 1234 states and 2925 transitions. [2021-10-06 16:24:46,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-10-06 16:24:46,281 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 1.0657894736842106) internal successors, (81), 76 states have internal predecessors, (81), 0 states have call successors, (0), 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 77 [2021-10-06 16:24:46,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:24:46,282 INFO L225 Difference]: With dead ends: 1234 [2021-10-06 16:24:46,282 INFO L226 Difference]: Without dead ends: 932 [2021-10-06 16:24:46,283 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 2132.5ms TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-10-06 16:24:46,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2021-10-06 16:24:46,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 636. [2021-10-06 16:24:46,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 633 states have (on average 2.3791469194312795) internal successors, (1506), 635 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:46,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1506 transitions. [2021-10-06 16:24:46,294 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1506 transitions. Word has length 77 [2021-10-06 16:24:46,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:24:46,295 INFO L470 AbstractCegarLoop]: Abstraction has 636 states and 1506 transitions. [2021-10-06 16:24:46,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 1.0657894736842106) internal successors, (81), 76 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:46,295 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1506 transitions. [2021-10-06 16:24:46,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-06 16:24:46,296 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:24:46,297 INFO L512 BasicCegarLoop]: trace histogram [74, 1, 1, 1, 1] [2021-10-06 16:24:46,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2021-10-06 16:24:46,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:46,512 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:24:46,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:24:46,512 INFO L82 PathProgramCache]: Analyzing trace with hash 270398748, now seen corresponding path program 74 times [2021-10-06 16:24:46,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:24:46,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752348065] [2021-10-06 16:24:46,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:24:46,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:24:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:24:48,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:48,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:24:48,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752348065] [2021-10-06 16:24:48,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752348065] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:48,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049243095] [2021-10-06 16:24:48,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:24:48,940 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:48,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:24:48,942 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:24:48,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-10-06 16:24:49,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:24:49,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:24:49,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 77 conjunts are in the unsatisfiable core [2021-10-06 16:24:49,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:24:50,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:50,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049243095] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:50,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:24:50,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 76 [2021-10-06 16:24:50,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133500836] [2021-10-06 16:24:50,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2021-10-06 16:24:50,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:24:50,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-10-06 16:24:50,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-10-06 16:24:50,079 INFO L87 Difference]: Start difference. First operand 636 states and 1506 transitions. Second operand has 78 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 77 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:51,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:24:51,355 INFO L93 Difference]: Finished difference Result 1250 states and 2963 transitions. [2021-10-06 16:24:51,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-10-06 16:24:51,356 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 77 states have internal predecessors, (82), 0 states have call successors, (0), 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 78 [2021-10-06 16:24:51,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:24:51,357 INFO L225 Difference]: With dead ends: 1250 [2021-10-06 16:24:51,358 INFO L226 Difference]: Without dead ends: 944 [2021-10-06 16:24:51,358 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 2255.6ms TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-10-06 16:24:51,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2021-10-06 16:24:51,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 644. [2021-10-06 16:24:51,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 641 states have (on average 2.3790951638065523) internal successors, (1525), 643 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:51,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1525 transitions. [2021-10-06 16:24:51,368 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1525 transitions. Word has length 78 [2021-10-06 16:24:51,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:24:51,368 INFO L470 AbstractCegarLoop]: Abstraction has 644 states and 1525 transitions. [2021-10-06 16:24:51,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 77 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:51,368 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1525 transitions. [2021-10-06 16:24:51,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-06 16:24:51,370 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:24:51,370 INFO L512 BasicCegarLoop]: trace histogram [75, 1, 1, 1, 1] [2021-10-06 16:24:51,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2021-10-06 16:24:51,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:51,571 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:24:51,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:24:51,571 INFO L82 PathProgramCache]: Analyzing trace with hash -207571289, now seen corresponding path program 75 times [2021-10-06 16:24:51,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:24:51,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255445706] [2021-10-06 16:24:51,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:24:51,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:24:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:24:54,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:54,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:24:54,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255445706] [2021-10-06 16:24:54,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255445706] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:54,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369378867] [2021-10-06 16:24:54,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:24:54,028 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:54,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:24:54,029 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:24:54,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2021-10-06 16:24:55,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2021-10-06 16:24:55,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:24:55,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 78 conjunts are in the unsatisfiable core [2021-10-06 16:24:55,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:24:55,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:55,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369378867] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:55,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:24:55,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 77 [2021-10-06 16:24:55,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119162222] [2021-10-06 16:24:55,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-10-06 16:24:55,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:24:55,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-10-06 16:24:55,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-10-06 16:24:55,278 INFO L87 Difference]: Start difference. First operand 644 states and 1525 transitions. Second operand has 79 states, 78 states have (on average 1.064102564102564) internal successors, (83), 78 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:56,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:24:56,631 INFO L93 Difference]: Finished difference Result 1266 states and 3001 transitions. [2021-10-06 16:24:56,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-10-06 16:24:56,631 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 1.064102564102564) internal successors, (83), 78 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-10-06 16:24:56,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:24:56,633 INFO L225 Difference]: With dead ends: 1266 [2021-10-06 16:24:56,633 INFO L226 Difference]: Without dead ends: 956 [2021-10-06 16:24:56,633 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2293.5ms TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-10-06 16:24:56,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2021-10-06 16:24:56,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 652. [2021-10-06 16:24:56,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 649 states have (on average 2.37904468412943) internal successors, (1544), 651 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:56,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1544 transitions. [2021-10-06 16:24:56,643 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1544 transitions. Word has length 79 [2021-10-06 16:24:56,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:24:56,644 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 1544 transitions. [2021-10-06 16:24:56,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 1.064102564102564) internal successors, (83), 78 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:24:56,644 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1544 transitions. [2021-10-06 16:24:56,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-06 16:24:56,645 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:24:56,645 INFO L512 BasicCegarLoop]: trace histogram [76, 1, 1, 1, 1] [2021-10-06 16:24:56,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2021-10-06 16:24:56,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:56,846 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:24:56,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:24:56,847 INFO L82 PathProgramCache]: Analyzing trace with hash -2139740548, now seen corresponding path program 76 times [2021-10-06 16:24:56,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:24:56,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547466576] [2021-10-06 16:24:56,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:24:56,848 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:24:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:24:59,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:24:59,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:24:59,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547466576] [2021-10-06 16:24:59,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547466576] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:24:59,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245667016] [2021-10-06 16:24:59,382 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:24:59,382 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:24:59,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:24:59,384 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:24:59,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2021-10-06 16:25:00,397 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:25:00,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:25:00,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 79 conjunts are in the unsatisfiable core [2021-10-06 16:25:00,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:25:00,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:00,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245667016] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:00,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:25:00,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 78 [2021-10-06 16:25:00,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522135527] [2021-10-06 16:25:00,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-10-06 16:25:00,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:25:00,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-10-06 16:25:00,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-10-06 16:25:00,597 INFO L87 Difference]: Start difference. First operand 652 states and 1544 transitions. Second operand has 80 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 79 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:01,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:25:01,947 INFO L93 Difference]: Finished difference Result 1282 states and 3039 transitions. [2021-10-06 16:25:01,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-10-06 16:25:01,947 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 79 states have internal predecessors, (84), 0 states have call successors, (0), 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 80 [2021-10-06 16:25:01,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:25:01,949 INFO L225 Difference]: With dead ends: 1282 [2021-10-06 16:25:01,949 INFO L226 Difference]: Without dead ends: 968 [2021-10-06 16:25:01,949 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2371.3ms TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-10-06 16:25:01,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2021-10-06 16:25:01,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 660. [2021-10-06 16:25:01,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 657 states have (on average 2.3789954337899544) internal successors, (1563), 659 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:01,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1563 transitions. [2021-10-06 16:25:01,958 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1563 transitions. Word has length 80 [2021-10-06 16:25:01,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:25:01,959 INFO L470 AbstractCegarLoop]: Abstraction has 660 states and 1563 transitions. [2021-10-06 16:25:01,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 79 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:01,959 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1563 transitions. [2021-10-06 16:25:01,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-06 16:25:01,960 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:25:01,960 INFO L512 BasicCegarLoop]: trace histogram [77, 1, 1, 1, 1] [2021-10-06 16:25:01,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2021-10-06 16:25:02,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:25:02,161 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:25:02,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:25:02,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1907445433, now seen corresponding path program 77 times [2021-10-06 16:25:02,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:25:02,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891613271] [2021-10-06 16:25:02,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:25:02,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:25:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:25:04,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:04,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:25:04,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891613271] [2021-10-06 16:25:04,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891613271] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:04,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225828878] [2021-10-06 16:25:04,817 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:25:04,817 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:25:04,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:25:04,820 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:25:04,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2021-10-06 16:25:05,875 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2021-10-06 16:25:05,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:25:05,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 80 conjunts are in the unsatisfiable core [2021-10-06 16:25:05,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:25:06,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:06,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225828878] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:06,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:25:06,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 79 [2021-10-06 16:25:06,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63292262] [2021-10-06 16:25:06,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2021-10-06 16:25:06,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:25:06,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-10-06 16:25:06,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2021-10-06 16:25:06,080 INFO L87 Difference]: Start difference. First operand 660 states and 1563 transitions. Second operand has 81 states, 80 states have (on average 1.0625) internal successors, (85), 80 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:07,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:25:07,472 INFO L93 Difference]: Finished difference Result 1298 states and 3077 transitions. [2021-10-06 16:25:07,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-10-06 16:25:07,472 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 1.0625) internal successors, (85), 80 states have internal predecessors, (85), 0 states have call successors, (0), 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 81 [2021-10-06 16:25:07,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:25:07,474 INFO L225 Difference]: With dead ends: 1298 [2021-10-06 16:25:07,474 INFO L226 Difference]: Without dead ends: 980 [2021-10-06 16:25:07,475 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 2491.0ms TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2021-10-06 16:25:07,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2021-10-06 16:25:07,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 668. [2021-10-06 16:25:07,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 665 states have (on average 2.3789473684210525) internal successors, (1582), 667 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:07,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1582 transitions. [2021-10-06 16:25:07,484 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1582 transitions. Word has length 81 [2021-10-06 16:25:07,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:25:07,484 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 1582 transitions. [2021-10-06 16:25:07,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 80 states have (on average 1.0625) internal successors, (85), 80 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:07,484 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1582 transitions. [2021-10-06 16:25:07,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-10-06 16:25:07,485 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:25:07,486 INFO L512 BasicCegarLoop]: trace histogram [78, 1, 1, 1, 1] [2021-10-06 16:25:07,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2021-10-06 16:25:07,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-10-06 16:25:07,686 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:25:07,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:25:07,687 INFO L82 PathProgramCache]: Analyzing trace with hash 998735836, now seen corresponding path program 78 times [2021-10-06 16:25:07,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:25:07,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871489318] [2021-10-06 16:25:07,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:25:07,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:25:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:25:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:10,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:25:10,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871489318] [2021-10-06 16:25:10,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871489318] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:10,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406348467] [2021-10-06 16:25:10,346 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:25:10,346 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:25:10,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:25:10,347 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:25:10,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2021-10-06 16:25:11,426 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2021-10-06 16:25:11,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:25:11,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 81 conjunts are in the unsatisfiable core [2021-10-06 16:25:11,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:25:11,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:11,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406348467] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:11,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:25:11,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 80 [2021-10-06 16:25:11,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745482675] [2021-10-06 16:25:11,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2021-10-06 16:25:11,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:25:11,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-10-06 16:25:11,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2021-10-06 16:25:11,645 INFO L87 Difference]: Start difference. First operand 668 states and 1582 transitions. Second operand has 82 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 81 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:13,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:25:13,250 INFO L93 Difference]: Finished difference Result 1314 states and 3115 transitions. [2021-10-06 16:25:13,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-10-06 16:25:13,250 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 81 states have internal predecessors, (86), 0 states have call successors, (0), 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 82 [2021-10-06 16:25:13,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:25:13,252 INFO L225 Difference]: With dead ends: 1314 [2021-10-06 16:25:13,252 INFO L226 Difference]: Without dead ends: 992 [2021-10-06 16:25:13,253 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 2500.0ms TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2021-10-06 16:25:13,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2021-10-06 16:25:13,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 676. [2021-10-06 16:25:13,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 673 states have (on average 2.3789004457652303) internal successors, (1601), 675 states have internal predecessors, (1601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:13,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1601 transitions. [2021-10-06 16:25:13,264 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1601 transitions. Word has length 82 [2021-10-06 16:25:13,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:25:13,265 INFO L470 AbstractCegarLoop]: Abstraction has 676 states and 1601 transitions. [2021-10-06 16:25:13,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 81 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:13,265 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1601 transitions. [2021-10-06 16:25:13,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-06 16:25:13,266 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:25:13,267 INFO L512 BasicCegarLoop]: trace histogram [79, 1, 1, 1, 1] [2021-10-06 16:25:13,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2021-10-06 16:25:13,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:25:13,479 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:25:13,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:25:13,479 INFO L82 PathProgramCache]: Analyzing trace with hash 896041959, now seen corresponding path program 79 times [2021-10-06 16:25:13,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:25:13,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658834914] [2021-10-06 16:25:13,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:25:13,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:25:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:25:16,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:16,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:25:16,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658834914] [2021-10-06 16:25:16,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658834914] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:16,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356889012] [2021-10-06 16:25:16,198 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:25:16,198 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:25:16,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:25:16,201 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:25:16,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-10-06 16:25:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:25:17,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 82 conjunts are in the unsatisfiable core [2021-10-06 16:25:17,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:25:17,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:17,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356889012] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:17,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:25:17,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 81 [2021-10-06 16:25:17,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384893717] [2021-10-06 16:25:17,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2021-10-06 16:25:17,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:25:17,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-10-06 16:25:17,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2021-10-06 16:25:17,465 INFO L87 Difference]: Start difference. First operand 676 states and 1601 transitions. Second operand has 83 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 82 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:18,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:25:18,886 INFO L93 Difference]: Finished difference Result 1330 states and 3153 transitions. [2021-10-06 16:25:18,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-10-06 16:25:18,887 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 82 states have internal predecessors, (87), 0 states have call successors, (0), 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 83 [2021-10-06 16:25:18,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:25:18,888 INFO L225 Difference]: With dead ends: 1330 [2021-10-06 16:25:18,888 INFO L226 Difference]: Without dead ends: 1004 [2021-10-06 16:25:18,889 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 2539.8ms TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2021-10-06 16:25:18,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-10-06 16:25:18,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 684. [2021-10-06 16:25:18,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 681 states have (on average 2.3788546255506606) internal successors, (1620), 683 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:18,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1620 transitions. [2021-10-06 16:25:18,898 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1620 transitions. Word has length 83 [2021-10-06 16:25:18,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:25:18,898 INFO L470 AbstractCegarLoop]: Abstraction has 684 states and 1620 transitions. [2021-10-06 16:25:18,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 82 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:18,898 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1620 transitions. [2021-10-06 16:25:18,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-06 16:25:18,899 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:25:18,899 INFO L512 BasicCegarLoop]: trace histogram [80, 1, 1, 1, 1] [2021-10-06 16:25:18,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2021-10-06 16:25:19,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-10-06 16:25:19,100 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:25:19,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:25:19,101 INFO L82 PathProgramCache]: Analyzing trace with hash 2007499068, now seen corresponding path program 80 times [2021-10-06 16:25:19,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:25:19,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142442026] [2021-10-06 16:25:19,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:25:19,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:25:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:25:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:21,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:25:21,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142442026] [2021-10-06 16:25:21,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142442026] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:21,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524585945] [2021-10-06 16:25:21,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:25:21,877 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:25:21,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:25:21,880 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:25:21,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2021-10-06 16:25:22,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:25:22,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:25:22,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 83 conjunts are in the unsatisfiable core [2021-10-06 16:25:22,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:25:23,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:23,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524585945] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:23,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:25:23,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 82 [2021-10-06 16:25:23,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81242821] [2021-10-06 16:25:23,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2021-10-06 16:25:23,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:25:23,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-10-06 16:25:23,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2021-10-06 16:25:23,169 INFO L87 Difference]: Start difference. First operand 684 states and 1620 transitions. Second operand has 84 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 83 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:24,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:25:24,768 INFO L93 Difference]: Finished difference Result 1346 states and 3191 transitions. [2021-10-06 16:25:24,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-10-06 16:25:24,768 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 83 states have internal predecessors, (88), 0 states have call successors, (0), 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 84 [2021-10-06 16:25:24,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:25:24,770 INFO L225 Difference]: With dead ends: 1346 [2021-10-06 16:25:24,771 INFO L226 Difference]: Without dead ends: 1016 [2021-10-06 16:25:24,771 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 2611.9ms TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2021-10-06 16:25:24,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2021-10-06 16:25:24,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 692. [2021-10-06 16:25:24,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 689 states have (on average 2.378809869375907) internal successors, (1639), 691 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:24,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1639 transitions. [2021-10-06 16:25:24,785 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1639 transitions. Word has length 84 [2021-10-06 16:25:24,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:25:24,786 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 1639 transitions. [2021-10-06 16:25:24,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 83 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:24,786 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1639 transitions. [2021-10-06 16:25:24,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-06 16:25:24,788 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:25:24,788 INFO L512 BasicCegarLoop]: trace histogram [81, 1, 1, 1, 1] [2021-10-06 16:25:24,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2021-10-06 16:25:25,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:25:25,002 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:25:25,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:25:25,002 INFO L82 PathProgramCache]: Analyzing trace with hash 2102931079, now seen corresponding path program 81 times [2021-10-06 16:25:25,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:25:25,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142918369] [2021-10-06 16:25:25,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:25:25,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:25:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:25:27,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:27,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:25:27,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142918369] [2021-10-06 16:25:27,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142918369] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:27,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721834834] [2021-10-06 16:25:27,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:25:27,884 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:25:27,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:25:27,885 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:25:27,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-10-06 16:25:29,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2021-10-06 16:25:29,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:25:29,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 84 conjunts are in the unsatisfiable core [2021-10-06 16:25:29,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:25:29,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:29,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721834834] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:29,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:25:29,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 83 [2021-10-06 16:25:29,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433681426] [2021-10-06 16:25:29,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2021-10-06 16:25:29,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:25:29,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-10-06 16:25:29,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2021-10-06 16:25:29,266 INFO L87 Difference]: Start difference. First operand 692 states and 1639 transitions. Second operand has 85 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 84 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:30,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:25:30,825 INFO L93 Difference]: Finished difference Result 1362 states and 3229 transitions. [2021-10-06 16:25:30,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-10-06 16:25:30,825 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 84 states have internal predecessors, (89), 0 states have call successors, (0), 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 85 [2021-10-06 16:25:30,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:25:30,827 INFO L225 Difference]: With dead ends: 1362 [2021-10-06 16:25:30,827 INFO L226 Difference]: Without dead ends: 1028 [2021-10-06 16:25:30,828 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2698.1ms TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2021-10-06 16:25:30,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2021-10-06 16:25:30,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 700. [2021-10-06 16:25:30,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 697 states have (on average 2.3787661406025826) internal successors, (1658), 699 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) [2021-10-06 16:25:30,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1658 transitions. [2021-10-06 16:25:30,837 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1658 transitions. Word has length 85 [2021-10-06 16:25:30,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:25:30,837 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 1658 transitions. [2021-10-06 16:25:30,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 84 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:30,837 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1658 transitions. [2021-10-06 16:25:30,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-06 16:25:30,838 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:25:30,839 INFO L512 BasicCegarLoop]: trace histogram [82, 1, 1, 1, 1] [2021-10-06 16:25:30,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2021-10-06 16:25:31,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:25:31,040 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:25:31,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:25:31,040 INFO L82 PathProgramCache]: Analyzing trace with hash 766356124, now seen corresponding path program 82 times [2021-10-06 16:25:31,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:25:31,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457234272] [2021-10-06 16:25:31,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:25:31,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:25:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:25:33,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:33,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:25:33,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457234272] [2021-10-06 16:25:33,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457234272] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:33,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518748833] [2021-10-06 16:25:33,952 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:25:33,952 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:25:33,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:25:33,953 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:25:33,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2021-10-06 16:25:35,121 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:25:35,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:25:35,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 85 conjunts are in the unsatisfiable core [2021-10-06 16:25:35,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:25:35,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:35,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518748833] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:35,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:25:35,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 84 [2021-10-06 16:25:35,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572250442] [2021-10-06 16:25:35,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2021-10-06 16:25:35,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:25:35,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-10-06 16:25:35,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2021-10-06 16:25:35,336 INFO L87 Difference]: Start difference. First operand 700 states and 1658 transitions. Second operand has 86 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 85 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:37,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:25:37,066 INFO L93 Difference]: Finished difference Result 1378 states and 3267 transitions. [2021-10-06 16:25:37,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-10-06 16:25:37,067 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 85 states have internal predecessors, (90), 0 states have call successors, (0), 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 86 [2021-10-06 16:25:37,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:25:37,069 INFO L225 Difference]: With dead ends: 1378 [2021-10-06 16:25:37,069 INFO L226 Difference]: Without dead ends: 1040 [2021-10-06 16:25:37,069 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2741.4ms TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2021-10-06 16:25:37,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2021-10-06 16:25:37,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 708. [2021-10-06 16:25:37,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 705 states have (on average 2.3787234042553194) internal successors, (1677), 707 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:37,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1677 transitions. [2021-10-06 16:25:37,079 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1677 transitions. Word has length 86 [2021-10-06 16:25:37,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:25:37,079 INFO L470 AbstractCegarLoop]: Abstraction has 708 states and 1677 transitions. [2021-10-06 16:25:37,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 85 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:37,079 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1677 transitions. [2021-10-06 16:25:37,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-06 16:25:37,080 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:25:37,080 INFO L512 BasicCegarLoop]: trace histogram [83, 1, 1, 1, 1] [2021-10-06 16:25:37,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2021-10-06 16:25:37,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:25:37,281 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:25:37,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:25:37,282 INFO L82 PathProgramCache]: Analyzing trace with hash -2012761817, now seen corresponding path program 83 times [2021-10-06 16:25:37,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:25:37,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120299773] [2021-10-06 16:25:37,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:25:37,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:25:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:25:40,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:40,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:25:40,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120299773] [2021-10-06 16:25:40,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120299773] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:40,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689662105] [2021-10-06 16:25:40,294 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:25:40,294 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:25:40,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:25:40,296 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:25:40,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2021-10-06 16:25:41,489 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2021-10-06 16:25:41,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:25:41,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 86 conjunts are in the unsatisfiable core [2021-10-06 16:25:41,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:25:41,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:41,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689662105] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:41,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:25:41,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 85 [2021-10-06 16:25:41,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33509203] [2021-10-06 16:25:41,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2021-10-06 16:25:41,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:25:41,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-10-06 16:25:41,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2021-10-06 16:25:41,711 INFO L87 Difference]: Start difference. First operand 708 states and 1677 transitions. Second operand has 87 states, 86 states have (on average 1.058139534883721) internal successors, (91), 86 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:43,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:25:43,463 INFO L93 Difference]: Finished difference Result 1394 states and 3305 transitions. [2021-10-06 16:25:43,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-10-06 16:25:43,463 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 86 states have (on average 1.058139534883721) internal successors, (91), 86 states have internal predecessors, (91), 0 states have call successors, (0), 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 87 [2021-10-06 16:25:43,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:25:43,465 INFO L225 Difference]: With dead ends: 1394 [2021-10-06 16:25:43,465 INFO L226 Difference]: Without dead ends: 1052 [2021-10-06 16:25:43,466 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 2840.0ms TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2021-10-06 16:25:43,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2021-10-06 16:25:43,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 716. [2021-10-06 16:25:43,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 713 states have (on average 2.378681626928471) internal successors, (1696), 715 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:43,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1696 transitions. [2021-10-06 16:25:43,477 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1696 transitions. Word has length 87 [2021-10-06 16:25:43,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:25:43,477 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 1696 transitions. [2021-10-06 16:25:43,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 86 states have (on average 1.058139534883721) internal successors, (91), 86 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:43,477 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1696 transitions. [2021-10-06 16:25:43,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-06 16:25:43,479 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:25:43,479 INFO L512 BasicCegarLoop]: trace histogram [84, 1, 1, 1, 1] [2021-10-06 16:25:43,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2021-10-06 16:25:43,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:25:43,680 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:25:43,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:25:43,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2028895228, now seen corresponding path program 84 times [2021-10-06 16:25:43,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:25:43,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844086852] [2021-10-06 16:25:43,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:25:43,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:25:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:25:46,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:46,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:25:46,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844086852] [2021-10-06 16:25:46,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844086852] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:46,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823359626] [2021-10-06 16:25:46,753 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:25:46,753 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:25:46,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:25:46,754 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:25:46,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2021-10-06 16:25:48,000 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-10-06 16:25:48,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:25:48,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 87 conjunts are in the unsatisfiable core [2021-10-06 16:25:48,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:25:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:48,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823359626] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:48,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:25:48,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 86 [2021-10-06 16:25:48,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696591546] [2021-10-06 16:25:48,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2021-10-06 16:25:48,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:25:48,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-10-06 16:25:48,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2021-10-06 16:25:48,223 INFO L87 Difference]: Start difference. First operand 716 states and 1696 transitions. Second operand has 88 states, 87 states have (on average 1.0574712643678161) internal successors, (92), 87 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:50,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:25:50,045 INFO L93 Difference]: Finished difference Result 1410 states and 3343 transitions. [2021-10-06 16:25:50,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-10-06 16:25:50,045 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 1.0574712643678161) internal successors, (92), 87 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-10-06 16:25:50,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:25:50,047 INFO L225 Difference]: With dead ends: 1410 [2021-10-06 16:25:50,047 INFO L226 Difference]: Without dead ends: 1064 [2021-10-06 16:25:50,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 2879.6ms TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2021-10-06 16:25:50,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2021-10-06 16:25:50,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 724. [2021-10-06 16:25:50,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 721 states have (on average 2.378640776699029) internal successors, (1715), 723 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:50,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1715 transitions. [2021-10-06 16:25:50,057 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1715 transitions. Word has length 88 [2021-10-06 16:25:50,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:25:50,057 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 1715 transitions. [2021-10-06 16:25:50,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 1.0574712643678161) internal successors, (92), 87 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:50,058 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1715 transitions. [2021-10-06 16:25:50,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-06 16:25:50,059 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:25:50,059 INFO L512 BasicCegarLoop]: trace histogram [85, 1, 1, 1, 1] [2021-10-06 16:25:50,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2021-10-06 16:25:50,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:25:50,260 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:25:50,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:25:50,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1528755257, now seen corresponding path program 85 times [2021-10-06 16:25:50,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:25:50,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900352317] [2021-10-06 16:25:50,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:25:50,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:25:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:25:53,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:53,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:25:53,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900352317] [2021-10-06 16:25:53,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900352317] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:53,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797383853] [2021-10-06 16:25:53,379 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:25:53,380 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:25:53,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:25:53,382 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:25:53,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2021-10-06 16:25:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:25:54,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 88 conjunts are in the unsatisfiable core [2021-10-06 16:25:54,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:25:54,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:54,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797383853] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:25:54,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:25:54,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 87 [2021-10-06 16:25:54,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104415854] [2021-10-06 16:25:54,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2021-10-06 16:25:54,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:25:54,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-10-06 16:25:54,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2021-10-06 16:25:54,860 INFO L87 Difference]: Start difference. First operand 724 states and 1715 transitions. Second operand has 89 states, 88 states have (on average 1.0568181818181819) internal successors, (93), 88 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:56,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:25:56,925 INFO L93 Difference]: Finished difference Result 1426 states and 3381 transitions. [2021-10-06 16:25:56,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-10-06 16:25:56,926 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 88 states have (on average 1.0568181818181819) internal successors, (93), 88 states have internal predecessors, (93), 0 states have call successors, (0), 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 89 [2021-10-06 16:25:56,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:25:56,928 INFO L225 Difference]: With dead ends: 1426 [2021-10-06 16:25:56,928 INFO L226 Difference]: Without dead ends: 1076 [2021-10-06 16:25:56,928 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2936.8ms TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2021-10-06 16:25:56,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2021-10-06 16:25:56,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 732. [2021-10-06 16:25:56,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 729 states have (on average 2.3786008230452675) internal successors, (1734), 731 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:56,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1734 transitions. [2021-10-06 16:25:56,939 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1734 transitions. Word has length 89 [2021-10-06 16:25:56,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:25:56,940 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 1734 transitions. [2021-10-06 16:25:56,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 88 states have (on average 1.0568181818181819) internal successors, (93), 88 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:25:56,940 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1734 transitions. [2021-10-06 16:25:56,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-06 16:25:56,941 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:25:56,941 INFO L512 BasicCegarLoop]: trace histogram [86, 1, 1, 1, 1] [2021-10-06 16:25:56,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2021-10-06 16:25:57,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2021-10-06 16:25:57,142 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:25:57,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:25:57,143 INFO L82 PathProgramCache]: Analyzing trace with hash -146770596, now seen corresponding path program 86 times [2021-10-06 16:25:57,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:25:57,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370513039] [2021-10-06 16:25:57,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:25:57,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:25:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:26:00,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:26:00,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:26:00,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370513039] [2021-10-06 16:26:00,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370513039] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:26:00,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325238976] [2021-10-06 16:26:00,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:26:00,342 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:26:00,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:26:00,343 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:26:00,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2021-10-06 16:26:01,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:26:01,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:26:01,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 89 conjunts are in the unsatisfiable core [2021-10-06 16:26:01,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:26:01,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:26:01,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325238976] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:26:01,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:26:01,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 88 [2021-10-06 16:26:01,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318771601] [2021-10-06 16:26:01,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2021-10-06 16:26:01,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:26:01,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-10-06 16:26:01,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2021-10-06 16:26:01,786 INFO L87 Difference]: Start difference. First operand 732 states and 1734 transitions. Second operand has 90 states, 89 states have (on average 1.0561797752808988) internal successors, (94), 89 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:03,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:26:03,736 INFO L93 Difference]: Finished difference Result 1442 states and 3419 transitions. [2021-10-06 16:26:03,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-10-06 16:26:03,737 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 1.0561797752808988) internal successors, (94), 89 states have internal predecessors, (94), 0 states have call successors, (0), 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 90 [2021-10-06 16:26:03,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:26:03,738 INFO L225 Difference]: With dead ends: 1442 [2021-10-06 16:26:03,739 INFO L226 Difference]: Without dead ends: 1088 [2021-10-06 16:26:03,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 3016.2ms TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2021-10-06 16:26:03,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2021-10-06 16:26:03,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 740. [2021-10-06 16:26:03,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 737 states have (on average 2.378561736770692) internal successors, (1753), 739 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:03,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1753 transitions. [2021-10-06 16:26:03,749 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1753 transitions. Word has length 90 [2021-10-06 16:26:03,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:26:03,755 INFO L470 AbstractCegarLoop]: Abstraction has 740 states and 1753 transitions. [2021-10-06 16:26:03,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 89 states have (on average 1.0561797752808988) internal successors, (94), 89 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:03,755 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1753 transitions. [2021-10-06 16:26:03,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-06 16:26:03,757 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:26:03,757 INFO L512 BasicCegarLoop]: trace histogram [87, 1, 1, 1, 1] [2021-10-06 16:26:03,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2021-10-06 16:26:03,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2021-10-06 16:26:03,964 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:26:03,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:26:03,965 INFO L82 PathProgramCache]: Analyzing trace with hash -254919065, now seen corresponding path program 87 times [2021-10-06 16:26:03,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:26:03,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385161042] [2021-10-06 16:26:03,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:26:03,966 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:26:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:26:07,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:26:07,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:26:07,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385161042] [2021-10-06 16:26:07,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385161042] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:26:07,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440070565] [2021-10-06 16:26:07,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:26:07,260 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:26:07,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:26:07,261 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:26:07,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2021-10-06 16:26:08,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2021-10-06 16:26:08,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:26:08,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 90 conjunts are in the unsatisfiable core [2021-10-06 16:26:08,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:26:08,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:26:08,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440070565] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:26:08,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:26:08,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 89 [2021-10-06 16:26:08,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614395950] [2021-10-06 16:26:08,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2021-10-06 16:26:08,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:26:08,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-10-06 16:26:08,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2021-10-06 16:26:08,834 INFO L87 Difference]: Start difference. First operand 740 states and 1753 transitions. Second operand has 91 states, 90 states have (on average 1.0555555555555556) internal successors, (95), 90 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:10,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:26:10,779 INFO L93 Difference]: Finished difference Result 1458 states and 3457 transitions. [2021-10-06 16:26:10,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-10-06 16:26:10,779 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 90 states have (on average 1.0555555555555556) internal successors, (95), 90 states have internal predecessors, (95), 0 states have call successors, (0), 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 91 [2021-10-06 16:26:10,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:26:10,781 INFO L225 Difference]: With dead ends: 1458 [2021-10-06 16:26:10,781 INFO L226 Difference]: Without dead ends: 1100 [2021-10-06 16:26:10,782 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 3108.1ms TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2021-10-06 16:26:10,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2021-10-06 16:26:10,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 748. [2021-10-06 16:26:10,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 745 states have (on average 2.3785234899328858) internal successors, (1772), 747 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:10,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1772 transitions. [2021-10-06 16:26:10,792 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1772 transitions. Word has length 91 [2021-10-06 16:26:10,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:26:10,792 INFO L470 AbstractCegarLoop]: Abstraction has 748 states and 1772 transitions. [2021-10-06 16:26:10,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 90 states have (on average 1.0555555555555556) internal successors, (95), 90 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:10,792 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1772 transitions. [2021-10-06 16:26:10,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-10-06 16:26:10,793 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:26:10,793 INFO L512 BasicCegarLoop]: trace histogram [88, 1, 1, 1, 1] [2021-10-06 16:26:10,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2021-10-06 16:26:10,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,92 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:26:10,994 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:26:10,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:26:10,995 INFO L82 PathProgramCache]: Analyzing trace with hash 687445692, now seen corresponding path program 88 times [2021-10-06 16:26:10,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:26:10,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279922793] [2021-10-06 16:26:10,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:26:10,996 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:26:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:26:14,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:26:14,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:26:14,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279922793] [2021-10-06 16:26:14,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279922793] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:26:14,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817162179] [2021-10-06 16:26:14,361 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:26:14,361 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:26:14,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:26:14,363 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:26:14,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2021-10-06 16:26:15,628 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:26:15,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:26:15,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 91 conjunts are in the unsatisfiable core [2021-10-06 16:26:15,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:26:15,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:26:15,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817162179] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:26:15,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:26:15,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 90 [2021-10-06 16:26:15,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106786041] [2021-10-06 16:26:15,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-10-06 16:26:15,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:26:15,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-10-06 16:26:15,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-10-06 16:26:15,866 INFO L87 Difference]: Start difference. First operand 748 states and 1772 transitions. Second operand has 92 states, 91 states have (on average 1.054945054945055) internal successors, (96), 91 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:17,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:26:17,831 INFO L93 Difference]: Finished difference Result 1474 states and 3495 transitions. [2021-10-06 16:26:17,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-10-06 16:26:17,832 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 1.054945054945055) internal successors, (96), 91 states have internal predecessors, (96), 0 states have call successors, (0), 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 92 [2021-10-06 16:26:17,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:26:17,834 INFO L225 Difference]: With dead ends: 1474 [2021-10-06 16:26:17,834 INFO L226 Difference]: Without dead ends: 1112 [2021-10-06 16:26:17,834 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 3156.8ms TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-10-06 16:26:17,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2021-10-06 16:26:17,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 756. [2021-10-06 16:26:17,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 753 states have (on average 2.3784860557768925) internal successors, (1791), 755 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:17,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1791 transitions. [2021-10-06 16:26:17,845 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1791 transitions. Word has length 92 [2021-10-06 16:26:17,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:26:17,845 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 1791 transitions. [2021-10-06 16:26:17,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 91 states have (on average 1.054945054945055) internal successors, (96), 91 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:17,845 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1791 transitions. [2021-10-06 16:26:17,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-06 16:26:17,847 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:26:17,847 INFO L512 BasicCegarLoop]: trace histogram [89, 1, 1, 1, 1] [2021-10-06 16:26:17,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2021-10-06 16:26:18,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2021-10-06 16:26:18,061 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:26:18,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:26:18,061 INFO L82 PathProgramCache]: Analyzing trace with hash -164017913, now seen corresponding path program 89 times [2021-10-06 16:26:18,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:26:18,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115815607] [2021-10-06 16:26:18,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:26:18,063 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:26:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:26:21,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:26:21,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:26:21,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115815607] [2021-10-06 16:26:21,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115815607] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:26:21,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560534364] [2021-10-06 16:26:21,487 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:26:21,487 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:26:21,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:26:21,489 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:26:21,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2021-10-06 16:26:22,837 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2021-10-06 16:26:22,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:26:22,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 92 conjunts are in the unsatisfiable core [2021-10-06 16:26:22,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:26:23,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:26:23,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560534364] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:26:23,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:26:23,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 91 [2021-10-06 16:26:23,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677576598] [2021-10-06 16:26:23,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2021-10-06 16:26:23,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:26:23,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-10-06 16:26:23,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2021-10-06 16:26:23,081 INFO L87 Difference]: Start difference. First operand 756 states and 1791 transitions. Second operand has 93 states, 92 states have (on average 1.0543478260869565) internal successors, (97), 92 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:25,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:26:25,310 INFO L93 Difference]: Finished difference Result 1490 states and 3533 transitions. [2021-10-06 16:26:25,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-10-06 16:26:25,311 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 92 states have (on average 1.0543478260869565) internal successors, (97), 92 states have internal predecessors, (97), 0 states have call successors, (0), 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 93 [2021-10-06 16:26:25,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:26:25,313 INFO L225 Difference]: With dead ends: 1490 [2021-10-06 16:26:25,313 INFO L226 Difference]: Without dead ends: 1124 [2021-10-06 16:26:25,313 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 3226.2ms TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2021-10-06 16:26:25,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2021-10-06 16:26:25,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 764. [2021-10-06 16:26:25,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 761 states have (on average 2.378449408672799) internal successors, (1810), 763 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:25,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1810 transitions. [2021-10-06 16:26:25,326 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1810 transitions. Word has length 93 [2021-10-06 16:26:25,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:26:25,326 INFO L470 AbstractCegarLoop]: Abstraction has 764 states and 1810 transitions. [2021-10-06 16:26:25,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 92 states have (on average 1.0543478260869565) internal successors, (97), 92 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:25,326 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1810 transitions. [2021-10-06 16:26:25,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-10-06 16:26:25,328 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:26:25,328 INFO L512 BasicCegarLoop]: trace histogram [90, 1, 1, 1, 1] [2021-10-06 16:26:25,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2021-10-06 16:26:25,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,94 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:26:25,529 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:26:25,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:26:25,529 INFO L82 PathProgramCache]: Analyzing trace with hash -789585892, now seen corresponding path program 90 times [2021-10-06 16:26:25,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:26:25,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39858326] [2021-10-06 16:26:25,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:26:25,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:26:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:26:29,017 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:26:29,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:26:29,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39858326] [2021-10-06 16:26:29,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39858326] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:26:29,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680365564] [2021-10-06 16:26:29,018 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:26:29,018 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:26:29,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:26:29,019 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:26:29,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2021-10-06 16:26:30,430 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2021-10-06 16:26:30,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:26:30,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 93 conjunts are in the unsatisfiable core [2021-10-06 16:26:30,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:26:30,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:26:30,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680365564] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:26:30,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:26:30,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 92 [2021-10-06 16:26:30,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619354154] [2021-10-06 16:26:30,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-10-06 16:26:30,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:26:30,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-10-06 16:26:30,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2021-10-06 16:26:30,673 INFO L87 Difference]: Start difference. First operand 764 states and 1810 transitions. Second operand has 94 states, 93 states have (on average 1.053763440860215) internal successors, (98), 93 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:32,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:26:32,912 INFO L93 Difference]: Finished difference Result 1506 states and 3571 transitions. [2021-10-06 16:26:32,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-10-06 16:26:32,912 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 1.053763440860215) internal successors, (98), 93 states have internal predecessors, (98), 0 states have call successors, (0), 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 94 [2021-10-06 16:26:32,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:26:32,914 INFO L225 Difference]: With dead ends: 1506 [2021-10-06 16:26:32,914 INFO L226 Difference]: Without dead ends: 1136 [2021-10-06 16:26:32,914 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 3296.0ms TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2021-10-06 16:26:32,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2021-10-06 16:26:32,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 772. [2021-10-06 16:26:32,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 769 states have (on average 2.3784135240572173) internal successors, (1829), 771 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:32,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1829 transitions. [2021-10-06 16:26:32,927 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1829 transitions. Word has length 94 [2021-10-06 16:26:32,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:26:32,927 INFO L470 AbstractCegarLoop]: Abstraction has 772 states and 1829 transitions. [2021-10-06 16:26:32,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 1.053763440860215) internal successors, (98), 93 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:32,927 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1829 transitions. [2021-10-06 16:26:32,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-06 16:26:32,928 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:26:32,929 INFO L512 BasicCegarLoop]: trace histogram [91, 1, 1, 1, 1] [2021-10-06 16:26:32,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2021-10-06 16:26:33,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-10-06 16:26:33,129 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:26:33,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:26:33,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1292643239, now seen corresponding path program 91 times [2021-10-06 16:26:33,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:26:33,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685907563] [2021-10-06 16:26:33,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:26:33,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:26:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:26:36,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:26:36,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:26:36,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685907563] [2021-10-06 16:26:36,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685907563] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:26:36,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758681367] [2021-10-06 16:26:36,716 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:26:36,716 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:26:36,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:26:36,717 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:26:36,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2021-10-06 16:26:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:26:38,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 94 conjunts are in the unsatisfiable core [2021-10-06 16:26:38,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:26:38,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:26:38,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758681367] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:26:38,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:26:38,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 93 [2021-10-06 16:26:38,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102179672] [2021-10-06 16:26:38,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2021-10-06 16:26:38,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:26:38,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-10-06 16:26:38,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2021-10-06 16:26:38,310 INFO L87 Difference]: Start difference. First operand 772 states and 1829 transitions. Second operand has 95 states, 94 states have (on average 1.053191489361702) internal successors, (99), 94 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:40,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:26:40,519 INFO L93 Difference]: Finished difference Result 1522 states and 3609 transitions. [2021-10-06 16:26:40,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-10-06 16:26:40,520 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 94 states have (on average 1.053191489361702) internal successors, (99), 94 states have internal predecessors, (99), 0 states have call successors, (0), 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 95 [2021-10-06 16:26:40,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:26:40,522 INFO L225 Difference]: With dead ends: 1522 [2021-10-06 16:26:40,523 INFO L226 Difference]: Without dead ends: 1148 [2021-10-06 16:26:40,523 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 3366.8ms TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2021-10-06 16:26:40,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2021-10-06 16:26:40,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 780. [2021-10-06 16:26:40,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 777 states have (on average 2.3783783783783785) internal successors, (1848), 779 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) [2021-10-06 16:26:40,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1848 transitions. [2021-10-06 16:26:40,538 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1848 transitions. Word has length 95 [2021-10-06 16:26:40,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:26:40,539 INFO L470 AbstractCegarLoop]: Abstraction has 780 states and 1848 transitions. [2021-10-06 16:26:40,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 94 states have (on average 1.053191489361702) internal successors, (99), 94 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:40,539 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1848 transitions. [2021-10-06 16:26:40,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-10-06 16:26:40,540 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:26:40,540 INFO L512 BasicCegarLoop]: trace histogram [92, 1, 1, 1, 1] [2021-10-06 16:26:40,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2021-10-06 16:26:40,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,96 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:26:40,752 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:26:40,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:26:40,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1417236860, now seen corresponding path program 92 times [2021-10-06 16:26:40,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:26:40,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032034541] [2021-10-06 16:26:40,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:26:40,754 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:26:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:26:44,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:26:44,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:26:44,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032034541] [2021-10-06 16:26:44,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032034541] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:26:44,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794669249] [2021-10-06 16:26:44,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:26:44,393 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:26:44,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:26:44,394 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:26:44,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2021-10-06 16:26:45,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:26:45,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:26:45,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 95 conjunts are in the unsatisfiable core [2021-10-06 16:26:45,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:26:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:26:46,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794669249] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:26:46,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:26:46,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 94 [2021-10-06 16:26:46,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134572011] [2021-10-06 16:26:46,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-10-06 16:26:46,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:26:46,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-10-06 16:26:46,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-10-06 16:26:46,021 INFO L87 Difference]: Start difference. First operand 780 states and 1848 transitions. Second operand has 96 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 95 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:48,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:26:48,365 INFO L93 Difference]: Finished difference Result 1538 states and 3647 transitions. [2021-10-06 16:26:48,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-10-06 16:26:48,366 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 95 states have internal predecessors, (100), 0 states have call successors, (0), 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 96 [2021-10-06 16:26:48,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:26:48,368 INFO L225 Difference]: With dead ends: 1538 [2021-10-06 16:26:48,368 INFO L226 Difference]: Without dead ends: 1160 [2021-10-06 16:26:48,368 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 3412.3ms TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-10-06 16:26:48,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2021-10-06 16:26:48,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 788. [2021-10-06 16:26:48,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 785 states have (on average 2.378343949044586) internal successors, (1867), 787 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:48,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1867 transitions. [2021-10-06 16:26:48,378 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1867 transitions. Word has length 96 [2021-10-06 16:26:48,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:26:48,379 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 1867 transitions. [2021-10-06 16:26:48,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 95 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:48,379 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1867 transitions. [2021-10-06 16:26:48,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-10-06 16:26:48,380 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:26:48,380 INFO L512 BasicCegarLoop]: trace histogram [93, 1, 1, 1, 1] [2021-10-06 16:26:48,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2021-10-06 16:26:48,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-10-06 16:26:48,581 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:26:48,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:26:48,581 INFO L82 PathProgramCache]: Analyzing trace with hash 984671815, now seen corresponding path program 93 times [2021-10-06 16:26:48,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:26:48,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402382170] [2021-10-06 16:26:48,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:26:48,582 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:26:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:26:52,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:26:52,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:26:52,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402382170] [2021-10-06 16:26:52,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402382170] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:26:52,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386137598] [2021-10-06 16:26:52,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:26:52,267 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:26:52,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:26:52,268 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:26:52,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2021-10-06 16:26:53,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2021-10-06 16:26:53,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:26:53,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 96 conjunts are in the unsatisfiable core [2021-10-06 16:26:53,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:26:54,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:26:54,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386137598] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:26:54,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:26:54,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 95 [2021-10-06 16:26:54,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188311193] [2021-10-06 16:26:54,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2021-10-06 16:26:54,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:26:54,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-10-06 16:26:54,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2021-10-06 16:26:54,036 INFO L87 Difference]: Start difference. First operand 788 states and 1867 transitions. Second operand has 97 states, 96 states have (on average 1.0520833333333333) internal successors, (101), 96 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:56,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:26:56,500 INFO L93 Difference]: Finished difference Result 1554 states and 3685 transitions. [2021-10-06 16:26:56,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-10-06 16:26:56,501 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 1.0520833333333333) internal successors, (101), 96 states have internal predecessors, (101), 0 states have call successors, (0), 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 97 [2021-10-06 16:26:56,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:26:56,502 INFO L225 Difference]: With dead ends: 1554 [2021-10-06 16:26:56,502 INFO L226 Difference]: Without dead ends: 1172 [2021-10-06 16:26:56,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 3491.1ms TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2021-10-06 16:26:56,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2021-10-06 16:26:56,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 796. [2021-10-06 16:26:56,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 793 states have (on average 2.378310214375788) internal successors, (1886), 795 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:56,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1886 transitions. [2021-10-06 16:26:56,518 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1886 transitions. Word has length 97 [2021-10-06 16:26:56,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:26:56,518 INFO L470 AbstractCegarLoop]: Abstraction has 796 states and 1886 transitions. [2021-10-06 16:26:56,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 96 states have (on average 1.0520833333333333) internal successors, (101), 96 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:26:56,518 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1886 transitions. [2021-10-06 16:26:56,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-06 16:26:56,520 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:26:56,520 INFO L512 BasicCegarLoop]: trace histogram [94, 1, 1, 1, 1] [2021-10-06 16:26:56,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2021-10-06 16:26:56,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-10-06 16:26:56,734 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:26:56,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:26:56,734 INFO L82 PathProgramCache]: Analyzing trace with hash 460057308, now seen corresponding path program 94 times [2021-10-06 16:26:56,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:26:56,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221514476] [2021-10-06 16:26:56,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:26:56,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:26:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:27:00,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:27:00,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:27:00,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221514476] [2021-10-06 16:27:00,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221514476] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:27:00,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105534495] [2021-10-06 16:27:00,513 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:27:00,514 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:27:00,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:27:00,515 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:27:00,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2021-10-06 16:27:01,956 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:27:01,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:27:01,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 97 conjunts are in the unsatisfiable core [2021-10-06 16:27:01,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:27:02,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:27:02,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105534495] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:27:02,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:27:02,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 96 [2021-10-06 16:27:02,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28459922] [2021-10-06 16:27:02,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2021-10-06 16:27:02,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:27:02,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-10-06 16:27:02,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2021-10-06 16:27:02,201 INFO L87 Difference]: Start difference. First operand 796 states and 1886 transitions. Second operand has 98 states, 97 states have (on average 1.0515463917525774) internal successors, (102), 97 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:04,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:27:04,683 INFO L93 Difference]: Finished difference Result 1570 states and 3723 transitions. [2021-10-06 16:27:04,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-10-06 16:27:04,684 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 1.0515463917525774) internal successors, (102), 97 states have internal predecessors, (102), 0 states have call successors, (0), 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 98 [2021-10-06 16:27:04,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:27:04,686 INFO L225 Difference]: With dead ends: 1570 [2021-10-06 16:27:04,686 INFO L226 Difference]: Without dead ends: 1184 [2021-10-06 16:27:04,686 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 3584.9ms TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2021-10-06 16:27:04,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2021-10-06 16:27:04,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 804. [2021-10-06 16:27:04,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 801 states have (on average 2.3782771535580522) internal successors, (1905), 803 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:04,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1905 transitions. [2021-10-06 16:27:04,699 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1905 transitions. Word has length 98 [2021-10-06 16:27:04,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:27:04,699 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 1905 transitions. [2021-10-06 16:27:04,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 1.0515463917525774) internal successors, (102), 97 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:04,699 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1905 transitions. [2021-10-06 16:27:04,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-10-06 16:27:04,700 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:27:04,700 INFO L512 BasicCegarLoop]: trace histogram [95, 1, 1, 1, 1] [2021-10-06 16:27:04,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2021-10-06 16:27:04,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-10-06 16:27:04,901 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:27:04,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:27:04,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1376876775, now seen corresponding path program 95 times [2021-10-06 16:27:04,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:27:04,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294781004] [2021-10-06 16:27:04,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:27:04,903 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:27:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:27:08,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:27:08,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:27:08,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294781004] [2021-10-06 16:27:08,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294781004] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:27:08,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387873587] [2021-10-06 16:27:08,762 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:27:08,763 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:27:08,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:27:08,765 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:27:08,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2021-10-06 16:27:10,299 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2021-10-06 16:27:10,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:27:10,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 98 conjunts are in the unsatisfiable core [2021-10-06 16:27:10,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:27:10,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:27:10,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387873587] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:27:10,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:27:10,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 97 [2021-10-06 16:27:10,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764571045] [2021-10-06 16:27:10,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2021-10-06 16:27:10,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:27:10,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-10-06 16:27:10,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2021-10-06 16:27:10,548 INFO L87 Difference]: Start difference. First operand 804 states and 1905 transitions. Second operand has 99 states, 98 states have (on average 1.0510204081632653) internal successors, (103), 98 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:13,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:27:13,293 INFO L93 Difference]: Finished difference Result 1586 states and 3761 transitions. [2021-10-06 16:27:13,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-10-06 16:27:13,294 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 98 states have (on average 1.0510204081632653) internal successors, (103), 98 states have internal predecessors, (103), 0 states have call successors, (0), 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 99 [2021-10-06 16:27:13,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:27:13,296 INFO L225 Difference]: With dead ends: 1586 [2021-10-06 16:27:13,296 INFO L226 Difference]: Without dead ends: 1196 [2021-10-06 16:27:13,297 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 3632.4ms TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2021-10-06 16:27:13,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2021-10-06 16:27:13,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 812. [2021-10-06 16:27:13,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 809 states have (on average 2.3782447466007417) internal successors, (1924), 811 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:13,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1924 transitions. [2021-10-06 16:27:13,310 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1924 transitions. Word has length 99 [2021-10-06 16:27:13,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:27:13,310 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 1924 transitions. [2021-10-06 16:27:13,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 98 states have (on average 1.0510204081632653) internal successors, (103), 98 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:13,310 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1924 transitions. [2021-10-06 16:27:13,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-06 16:27:13,311 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:27:13,311 INFO L512 BasicCegarLoop]: trace histogram [96, 1, 1, 1, 1] [2021-10-06 16:27:13,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2021-10-06 16:27:13,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,100 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:27:13,520 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:27:13,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:27:13,521 INFO L82 PathProgramCache]: Analyzing trace with hash -266490820, now seen corresponding path program 96 times [2021-10-06 16:27:13,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:27:13,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334856946] [2021-10-06 16:27:13,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:27:13,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:27:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:27:17,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:27:17,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:27:17,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334856946] [2021-10-06 16:27:17,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334856946] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:27:17,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906183861] [2021-10-06 16:27:17,480 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:27:17,480 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:27:17,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:27:17,482 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:27:17,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2021-10-06 16:27:19,069 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-10-06 16:27:19,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:27:19,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 99 conjunts are in the unsatisfiable core [2021-10-06 16:27:19,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:27:19,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:27:19,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906183861] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:27:19,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:27:19,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 98 [2021-10-06 16:27:19,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439644432] [2021-10-06 16:27:19,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2021-10-06 16:27:19,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:27:19,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-10-06 16:27:19,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2021-10-06 16:27:19,324 INFO L87 Difference]: Start difference. First operand 812 states and 1924 transitions. Second operand has 100 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 99 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:22,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:27:22,057 INFO L93 Difference]: Finished difference Result 1602 states and 3799 transitions. [2021-10-06 16:27:22,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-10-06 16:27:22,058 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 99 states have internal predecessors, (104), 0 states have call successors, (0), 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 100 [2021-10-06 16:27:22,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:27:22,059 INFO L225 Difference]: With dead ends: 1602 [2021-10-06 16:27:22,059 INFO L226 Difference]: Without dead ends: 1208 [2021-10-06 16:27:22,060 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3756.8ms TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2021-10-06 16:27:22,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2021-10-06 16:27:22,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 820. [2021-10-06 16:27:22,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 817 states have (on average 2.3782129742962055) internal successors, (1943), 819 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:22,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1943 transitions. [2021-10-06 16:27:22,071 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1943 transitions. Word has length 100 [2021-10-06 16:27:22,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:27:22,071 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 1943 transitions. [2021-10-06 16:27:22,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 99 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:22,071 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1943 transitions. [2021-10-06 16:27:22,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-06 16:27:22,072 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:27:22,072 INFO L512 BasicCegarLoop]: trace histogram [97, 1, 1, 1, 1] [2021-10-06 16:27:22,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2021-10-06 16:27:22,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-10-06 16:27:22,273 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:27:22,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:27:22,274 INFO L82 PathProgramCache]: Analyzing trace with hash 328721287, now seen corresponding path program 97 times [2021-10-06 16:27:22,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:27:22,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976692153] [2021-10-06 16:27:22,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:27:22,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:27:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:27:26,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:27:26,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:27:26,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976692153] [2021-10-06 16:27:26,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976692153] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:27:26,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600521079] [2021-10-06 16:27:26,267 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:27:26,267 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:27:26,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:27:26,268 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:27:26,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2021-10-06 16:27:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:27:27,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 930 conjuncts, 100 conjunts are in the unsatisfiable core [2021-10-06 16:27:27,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:27:28,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:27:28,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600521079] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:27:28,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:27:28,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 99 [2021-10-06 16:27:28,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357328559] [2021-10-06 16:27:28,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-10-06 16:27:28,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:27:28,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-10-06 16:27:28,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2021-10-06 16:27:28,052 INFO L87 Difference]: Start difference. First operand 820 states and 1943 transitions. Second operand has 101 states, 100 states have (on average 1.05) internal successors, (105), 100 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:30,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:27:30,725 INFO L93 Difference]: Finished difference Result 1618 states and 3837 transitions. [2021-10-06 16:27:30,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-10-06 16:27:30,726 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 100 states have (on average 1.05) internal successors, (105), 100 states have internal predecessors, (105), 0 states have call successors, (0), 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 101 [2021-10-06 16:27:30,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:27:30,728 INFO L225 Difference]: With dead ends: 1618 [2021-10-06 16:27:30,728 INFO L226 Difference]: Without dead ends: 1220 [2021-10-06 16:27:30,728 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 3789.7ms TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2021-10-06 16:27:30,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2021-10-06 16:27:30,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 828. [2021-10-06 16:27:30,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 825 states have (on average 2.3781818181818184) internal successors, (1962), 827 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:30,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1962 transitions. [2021-10-06 16:27:30,745 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1962 transitions. Word has length 101 [2021-10-06 16:27:30,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:27:30,745 INFO L470 AbstractCegarLoop]: Abstraction has 828 states and 1962 transitions. [2021-10-06 16:27:30,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 100 states have (on average 1.05) internal successors, (105), 100 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:30,745 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1962 transitions. [2021-10-06 16:27:30,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-06 16:27:30,747 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:27:30,747 INFO L512 BasicCegarLoop]: trace histogram [98, 1, 1, 1, 1] [2021-10-06 16:27:30,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2021-10-06 16:27:30,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,102 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:27:30,964 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:27:30,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:27:30,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1600427420, now seen corresponding path program 98 times [2021-10-06 16:27:30,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:27:30,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685919426] [2021-10-06 16:27:30,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:27:30,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:27:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:27:35,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:27:35,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:27:35,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685919426] [2021-10-06 16:27:35,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685919426] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:27:35,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932869704] [2021-10-06 16:27:35,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:27:35,059 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:27:35,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:27:35,060 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:27:35,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2021-10-06 16:27:36,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:27:36,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:27:36,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 101 conjunts are in the unsatisfiable core [2021-10-06 16:27:36,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:27:36,906 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:27:36,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932869704] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:27:36,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:27:36,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 100 [2021-10-06 16:27:36,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933191526] [2021-10-06 16:27:36,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2021-10-06 16:27:36,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:27:36,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-10-06 16:27:36,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2021-10-06 16:27:36,911 INFO L87 Difference]: Start difference. First operand 828 states and 1962 transitions. Second operand has 102 states, 101 states have (on average 1.0495049504950495) internal successors, (106), 101 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:39,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:27:39,801 INFO L93 Difference]: Finished difference Result 1634 states and 3875 transitions. [2021-10-06 16:27:39,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-10-06 16:27:39,801 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 101 states have (on average 1.0495049504950495) internal successors, (106), 101 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-10-06 16:27:39,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:27:39,804 INFO L225 Difference]: With dead ends: 1634 [2021-10-06 16:27:39,804 INFO L226 Difference]: Without dead ends: 1232 [2021-10-06 16:27:39,805 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 3887.8ms TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2021-10-06 16:27:39,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2021-10-06 16:27:39,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 836. [2021-10-06 16:27:39,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 833 states have (on average 2.3781512605042017) internal successors, (1981), 835 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:39,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1981 transitions. [2021-10-06 16:27:39,820 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1981 transitions. Word has length 102 [2021-10-06 16:27:39,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:27:39,820 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 1981 transitions. [2021-10-06 16:27:39,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 101 states have (on average 1.0495049504950495) internal successors, (106), 101 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:39,821 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1981 transitions. [2021-10-06 16:27:39,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-06 16:27:39,822 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:27:39,822 INFO L512 BasicCegarLoop]: trace histogram [99, 1, 1, 1, 1] [2021-10-06 16:27:39,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2021-10-06 16:27:40,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,103 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:27:40,035 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:27:40,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:27:40,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1926355417, now seen corresponding path program 99 times [2021-10-06 16:27:40,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:27:40,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269315983] [2021-10-06 16:27:40,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:27:40,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:27:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:27:44,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:27:44,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:27:44,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269315983] [2021-10-06 16:27:44,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269315983] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:27:44,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170872705] [2021-10-06 16:27:44,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:27:44,235 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:27:44,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:27:44,236 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:27:44,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2021-10-06 16:27:45,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2021-10-06 16:27:45,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:27:45,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 102 conjunts are in the unsatisfiable core [2021-10-06 16:27:45,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:27:46,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:27:46,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170872705] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:27:46,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:27:46,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 101 [2021-10-06 16:27:46,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743502985] [2021-10-06 16:27:46,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2021-10-06 16:27:46,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:27:46,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-10-06 16:27:46,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-10-06 16:27:46,181 INFO L87 Difference]: Start difference. First operand 836 states and 1981 transitions. Second operand has 103 states, 102 states have (on average 1.0490196078431373) internal successors, (107), 102 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:49,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:27:49,027 INFO L93 Difference]: Finished difference Result 1650 states and 3913 transitions. [2021-10-06 16:27:49,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-10-06 16:27:49,028 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 102 states have (on average 1.0490196078431373) internal successors, (107), 102 states have internal predecessors, (107), 0 states have call successors, (0), 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 103 [2021-10-06 16:27:49,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:27:49,030 INFO L225 Difference]: With dead ends: 1650 [2021-10-06 16:27:49,030 INFO L226 Difference]: Without dead ends: 1244 [2021-10-06 16:27:49,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3949.5ms TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-10-06 16:27:49,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2021-10-06 16:27:49,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 844. [2021-10-06 16:27:49,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 841 states have (on average 2.3781212841854935) internal successors, (2000), 843 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:49,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2000 transitions. [2021-10-06 16:27:49,041 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2000 transitions. Word has length 103 [2021-10-06 16:27:49,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:27:49,041 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 2000 transitions. [2021-10-06 16:27:49,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 102 states have (on average 1.0490196078431373) internal successors, (107), 102 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:49,042 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2000 transitions. [2021-10-06 16:27:49,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-06 16:27:49,043 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:27:49,043 INFO L512 BasicCegarLoop]: trace histogram [100, 1, 1, 1, 1] [2021-10-06 16:27:49,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2021-10-06 16:27:49,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,104 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:27:49,244 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:27:49,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:27:49,244 INFO L82 PathProgramCache]: Analyzing trace with hash 412526332, now seen corresponding path program 100 times [2021-10-06 16:27:49,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:27:49,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441236082] [2021-10-06 16:27:49,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:27:49,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:27:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:27:53,497 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:27:53,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:27:53,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441236082] [2021-10-06 16:27:53,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441236082] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:27:53,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678184730] [2021-10-06 16:27:53,498 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:27:53,498 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:27:53,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:27:53,499 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:27:53,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2021-10-06 16:27:55,122 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:27:55,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:27:55,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 957 conjuncts, 103 conjunts are in the unsatisfiable core [2021-10-06 16:27:55,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:27:55,382 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:27:55,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678184730] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:27:55,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:27:55,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 102 [2021-10-06 16:27:55,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361088300] [2021-10-06 16:27:55,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2021-10-06 16:27:55,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:27:55,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-10-06 16:27:55,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2021-10-06 16:27:55,385 INFO L87 Difference]: Start difference. First operand 844 states and 2000 transitions. Second operand has 104 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 103 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:58,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:27:58,287 INFO L93 Difference]: Finished difference Result 1666 states and 3951 transitions. [2021-10-06 16:27:58,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-10-06 16:27:58,288 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 103 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-10-06 16:27:58,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:27:58,290 INFO L225 Difference]: With dead ends: 1666 [2021-10-06 16:27:58,290 INFO L226 Difference]: Without dead ends: 1256 [2021-10-06 16:27:58,291 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 4034.4ms TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2021-10-06 16:27:58,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2021-10-06 16:27:58,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 852. [2021-10-06 16:27:58,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 849 states have (on average 2.3780918727915195) internal successors, (2019), 851 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:58,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 2019 transitions. [2021-10-06 16:27:58,301 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 2019 transitions. Word has length 104 [2021-10-06 16:27:58,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:27:58,302 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 2019 transitions. [2021-10-06 16:27:58,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 103 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:27:58,302 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 2019 transitions. [2021-10-06 16:27:58,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-06 16:27:58,303 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:27:58,303 INFO L512 BasicCegarLoop]: trace histogram [101, 1, 1, 1, 1] [2021-10-06 16:27:58,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2021-10-06 16:27:58,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,105 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:27:58,504 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:27:58,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:27:58,504 INFO L82 PathProgramCache]: Analyzing trace with hash -96583481, now seen corresponding path program 101 times [2021-10-06 16:27:58,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:27:58,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741478196] [2021-10-06 16:27:58,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:27:58,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:27:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:28:02,831 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:28:02,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:28:02,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741478196] [2021-10-06 16:28:02,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741478196] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:28:02,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581845713] [2021-10-06 16:28:02,834 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:28:02,834 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:28:02,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:28:02,835 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:28:02,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2021-10-06 16:28:04,526 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2021-10-06 16:28:04,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:28:04,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 104 conjunts are in the unsatisfiable core [2021-10-06 16:28:04,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:28:04,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:28:04,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581845713] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:28:04,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:28:04,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 103 [2021-10-06 16:28:04,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22558380] [2021-10-06 16:28:04,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2021-10-06 16:28:04,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:28:04,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-10-06 16:28:04,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2021-10-06 16:28:04,783 INFO L87 Difference]: Start difference. First operand 852 states and 2019 transitions. Second operand has 105 states, 104 states have (on average 1.0480769230769231) internal successors, (109), 104 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:07,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:28:07,928 INFO L93 Difference]: Finished difference Result 1682 states and 3989 transitions. [2021-10-06 16:28:07,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-10-06 16:28:07,928 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 104 states have (on average 1.0480769230769231) internal successors, (109), 104 states have internal predecessors, (109), 0 states have call successors, (0), 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 105 [2021-10-06 16:28:07,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:28:07,930 INFO L225 Difference]: With dead ends: 1682 [2021-10-06 16:28:07,930 INFO L226 Difference]: Without dead ends: 1268 [2021-10-06 16:28:07,931 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 4109.3ms TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2021-10-06 16:28:07,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2021-10-06 16:28:07,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 860. [2021-10-06 16:28:07,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 857 states have (on average 2.37806301050175) internal successors, (2038), 859 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:07,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 2038 transitions. [2021-10-06 16:28:07,941 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 2038 transitions. Word has length 105 [2021-10-06 16:28:07,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:28:07,941 INFO L470 AbstractCegarLoop]: Abstraction has 860 states and 2038 transitions. [2021-10-06 16:28:07,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 104 states have (on average 1.0480769230769231) internal successors, (109), 104 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:07,942 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 2038 transitions. [2021-10-06 16:28:07,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-10-06 16:28:07,943 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:28:07,943 INFO L512 BasicCegarLoop]: trace histogram [102, 1, 1, 1, 1] [2021-10-06 16:28:07,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2021-10-06 16:28:08,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2021-10-06 16:28:08,143 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:28:08,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:28:08,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1300881500, now seen corresponding path program 102 times [2021-10-06 16:28:08,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:28:08,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774484398] [2021-10-06 16:28:08,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:28:08,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:28:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:28:12,564 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:28:12,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:28:12,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774484398] [2021-10-06 16:28:12,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774484398] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:28:12,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979506821] [2021-10-06 16:28:12,565 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:28:12,565 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:28:12,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:28:12,566 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:28:12,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2021-10-06 16:28:14,305 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2021-10-06 16:28:14,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:28:14,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 105 conjunts are in the unsatisfiable core [2021-10-06 16:28:14,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:28:14,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:28:14,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979506821] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:28:14,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:28:14,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 104 [2021-10-06 16:28:14,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981595445] [2021-10-06 16:28:14,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2021-10-06 16:28:14,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:28:14,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-10-06 16:28:14,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2021-10-06 16:28:14,571 INFO L87 Difference]: Start difference. First operand 860 states and 2038 transitions. Second operand has 106 states, 105 states have (on average 1.0476190476190477) internal successors, (110), 105 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:18,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:28:18,058 INFO L93 Difference]: Finished difference Result 1698 states and 4027 transitions. [2021-10-06 16:28:18,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-10-06 16:28:18,058 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 105 states have (on average 1.0476190476190477) internal successors, (110), 105 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-10-06 16:28:18,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:28:18,060 INFO L225 Difference]: With dead ends: 1698 [2021-10-06 16:28:18,060 INFO L226 Difference]: Without dead ends: 1280 [2021-10-06 16:28:18,061 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 4205.9ms TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2021-10-06 16:28:18,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2021-10-06 16:28:18,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 868. [2021-10-06 16:28:18,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 865 states have (on average 2.378034682080925) internal successors, (2057), 867 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:18,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 2057 transitions. [2021-10-06 16:28:18,072 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 2057 transitions. Word has length 106 [2021-10-06 16:28:18,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:28:18,072 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 2057 transitions. [2021-10-06 16:28:18,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 105 states have (on average 1.0476190476190477) internal successors, (110), 105 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:18,072 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 2057 transitions. [2021-10-06 16:28:18,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-06 16:28:18,073 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:28:18,073 INFO L512 BasicCegarLoop]: trace histogram [103, 1, 1, 1, 1] [2021-10-06 16:28:18,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2021-10-06 16:28:18,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-10-06 16:28:18,274 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:28:18,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:28:18,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1672622951, now seen corresponding path program 103 times [2021-10-06 16:28:18,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:28:18,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983070886] [2021-10-06 16:28:18,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:28:18,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:28:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:28:22,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:28:22,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:28:22,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983070886] [2021-10-06 16:28:22,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983070886] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:28:22,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077111134] [2021-10-06 16:28:22,793 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:28:22,793 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:28:22,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:28:22,795 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:28:22,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2021-10-06 16:28:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:28:24,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 106 conjunts are in the unsatisfiable core [2021-10-06 16:28:24,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:28:24,777 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:28:24,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077111134] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:28:24,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:28:24,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 105 [2021-10-06 16:28:24,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884648914] [2021-10-06 16:28:24,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2021-10-06 16:28:24,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:28:24,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-10-06 16:28:24,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2021-10-06 16:28:24,781 INFO L87 Difference]: Start difference. First operand 868 states and 2057 transitions. Second operand has 107 states, 106 states have (on average 1.0471698113207548) internal successors, (111), 106 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:28,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:28:28,051 INFO L93 Difference]: Finished difference Result 1714 states and 4065 transitions. [2021-10-06 16:28:28,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-10-06 16:28:28,051 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 106 states have (on average 1.0471698113207548) internal successors, (111), 106 states have internal predecessors, (111), 0 states have call successors, (0), 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 107 [2021-10-06 16:28:28,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:28:28,053 INFO L225 Difference]: With dead ends: 1714 [2021-10-06 16:28:28,053 INFO L226 Difference]: Without dead ends: 1292 [2021-10-06 16:28:28,054 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 4297.9ms TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2021-10-06 16:28:28,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-10-06 16:28:28,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 876. [2021-10-06 16:28:28,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 873 states have (on average 2.3780068728522337) internal successors, (2076), 875 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:28,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 2076 transitions. [2021-10-06 16:28:28,067 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 2076 transitions. Word has length 107 [2021-10-06 16:28:28,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:28:28,067 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 2076 transitions. [2021-10-06 16:28:28,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 106 states have (on average 1.0471698113207548) internal successors, (111), 106 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:28,067 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 2076 transitions. [2021-10-06 16:28:28,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-06 16:28:28,068 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:28:28,068 INFO L512 BasicCegarLoop]: trace histogram [104, 1, 1, 1, 1] [2021-10-06 16:28:28,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2021-10-06 16:28:28,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-10-06 16:28:28,269 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:28:28,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:28:28,270 INFO L82 PathProgramCache]: Analyzing trace with hash 311706044, now seen corresponding path program 104 times [2021-10-06 16:28:28,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:28:28,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349644072] [2021-10-06 16:28:28,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:28:28,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:28:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:28:32,828 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:28:32,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:28:32,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349644072] [2021-10-06 16:28:32,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349644072] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:28:32,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206831201] [2021-10-06 16:28:32,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:28:32,829 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:28:32,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:28:32,830 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:28:32,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2021-10-06 16:28:34,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:28:34,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:28:34,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 107 conjunts are in the unsatisfiable core [2021-10-06 16:28:34,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:28:34,838 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:28:34,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206831201] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:28:34,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:28:34,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 106 [2021-10-06 16:28:34,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572056276] [2021-10-06 16:28:34,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2021-10-06 16:28:34,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:28:34,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-10-06 16:28:34,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2021-10-06 16:28:34,842 INFO L87 Difference]: Start difference. First operand 876 states and 2076 transitions. Second operand has 108 states, 107 states have (on average 1.0467289719626167) internal successors, (112), 107 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:38,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:28:38,329 INFO L93 Difference]: Finished difference Result 1730 states and 4103 transitions. [2021-10-06 16:28:38,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-10-06 16:28:38,330 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 107 states have (on average 1.0467289719626167) internal successors, (112), 107 states have internal predecessors, (112), 0 states have call successors, (0), 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 108 [2021-10-06 16:28:38,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:28:38,332 INFO L225 Difference]: With dead ends: 1730 [2021-10-06 16:28:38,332 INFO L226 Difference]: Without dead ends: 1304 [2021-10-06 16:28:38,333 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 4340.2ms TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2021-10-06 16:28:38,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-10-06 16:28:38,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 884. [2021-10-06 16:28:38,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 881 states have (on average 2.3779795686719636) internal successors, (2095), 883 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:38,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 2095 transitions. [2021-10-06 16:28:38,344 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 2095 transitions. Word has length 108 [2021-10-06 16:28:38,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:28:38,344 INFO L470 AbstractCegarLoop]: Abstraction has 884 states and 2095 transitions. [2021-10-06 16:28:38,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 107 states have (on average 1.0467289719626167) internal successors, (112), 107 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:38,344 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 2095 transitions. [2021-10-06 16:28:38,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-10-06 16:28:38,345 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:28:38,345 INFO L512 BasicCegarLoop]: trace histogram [105, 1, 1, 1, 1] [2021-10-06 16:28:38,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2021-10-06 16:28:38,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-10-06 16:28:38,546 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:28:38,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:28:38,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1072954887, now seen corresponding path program 105 times [2021-10-06 16:28:38,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:28:38,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126244590] [2021-10-06 16:28:38,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:28:38,561 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:28:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:28:43,205 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:28:43,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:28:43,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126244590] [2021-10-06 16:28:43,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126244590] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:28:43,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496165629] [2021-10-06 16:28:43,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:28:43,207 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:28:43,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:28:43,207 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:28:43,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2021-10-06 16:28:45,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2021-10-06 16:28:45,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:28:45,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 108 conjunts are in the unsatisfiable core [2021-10-06 16:28:45,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:28:45,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:28:45,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496165629] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:28:45,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:28:45,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 107 [2021-10-06 16:28:45,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045697340] [2021-10-06 16:28:45,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2021-10-06 16:28:45,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:28:45,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-10-06 16:28:45,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2021-10-06 16:28:45,333 INFO L87 Difference]: Start difference. First operand 884 states and 2095 transitions. Second operand has 109 states, 108 states have (on average 1.0462962962962963) internal successors, (113), 108 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:48,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:28:48,982 INFO L93 Difference]: Finished difference Result 1746 states and 4141 transitions. [2021-10-06 16:28:48,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-10-06 16:28:48,983 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 108 states have (on average 1.0462962962962963) internal successors, (113), 108 states have internal predecessors, (113), 0 states have call successors, (0), 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 109 [2021-10-06 16:28:48,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:28:48,985 INFO L225 Difference]: With dead ends: 1746 [2021-10-06 16:28:48,985 INFO L226 Difference]: Without dead ends: 1316 [2021-10-06 16:28:48,986 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 4424.9ms TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2021-10-06 16:28:48,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2021-10-06 16:28:48,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 892. [2021-10-06 16:28:48,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 889 states have (on average 2.377952755905512) internal successors, (2114), 891 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:48,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 2114 transitions. [2021-10-06 16:28:48,997 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 2114 transitions. Word has length 109 [2021-10-06 16:28:48,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:28:48,997 INFO L470 AbstractCegarLoop]: Abstraction has 892 states and 2114 transitions. [2021-10-06 16:28:48,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 108 states have (on average 1.0462962962962963) internal successors, (113), 108 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:48,997 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 2114 transitions. [2021-10-06 16:28:48,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-06 16:28:48,999 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:28:48,999 INFO L512 BasicCegarLoop]: trace histogram [106, 1, 1, 1, 1] [2021-10-06 16:28:49,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2021-10-06 16:28:49,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2021-10-06 16:28:49,199 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:28:49,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:28:49,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1098134756, now seen corresponding path program 106 times [2021-10-06 16:28:49,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:28:49,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985753091] [2021-10-06 16:28:49,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:28:49,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:28:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:28:53,955 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:28:53,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:28:53,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985753091] [2021-10-06 16:28:53,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985753091] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:28:53,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076077680] [2021-10-06 16:28:53,956 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:28:53,956 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:28:53,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:28:53,957 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:28:53,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2021-10-06 16:28:55,757 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:28:55,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:28:55,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 109 conjunts are in the unsatisfiable core [2021-10-06 16:28:55,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:28:56,032 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:28:56,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076077680] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:28:56,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:28:56,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 108 [2021-10-06 16:28:56,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566926518] [2021-10-06 16:28:56,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2021-10-06 16:28:56,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:28:56,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2021-10-06 16:28:56,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2021-10-06 16:28:56,035 INFO L87 Difference]: Start difference. First operand 892 states and 2114 transitions. Second operand has 110 states, 109 states have (on average 1.0458715596330275) internal successors, (114), 109 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:59,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:28:59,543 INFO L93 Difference]: Finished difference Result 1762 states and 4179 transitions. [2021-10-06 16:28:59,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-10-06 16:28:59,544 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 109 states have (on average 1.0458715596330275) internal successors, (114), 109 states have internal predecessors, (114), 0 states have call successors, (0), 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 110 [2021-10-06 16:28:59,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:28:59,546 INFO L225 Difference]: With dead ends: 1762 [2021-10-06 16:28:59,546 INFO L226 Difference]: Without dead ends: 1328 [2021-10-06 16:28:59,546 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 4527.1ms TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2021-10-06 16:28:59,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2021-10-06 16:28:59,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 900. [2021-10-06 16:28:59,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 897 states have (on average 2.3779264214046822) internal successors, (2133), 899 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:59,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 2133 transitions. [2021-10-06 16:28:59,560 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 2133 transitions. Word has length 110 [2021-10-06 16:28:59,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:28:59,560 INFO L470 AbstractCegarLoop]: Abstraction has 900 states and 2133 transitions. [2021-10-06 16:28:59,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 109 states have (on average 1.0458715596330275) internal successors, (114), 109 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:28:59,560 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 2133 transitions. [2021-10-06 16:28:59,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-06 16:28:59,562 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:28:59,562 INFO L512 BasicCegarLoop]: trace histogram [107, 1, 1, 1, 1] [2021-10-06 16:28:59,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2021-10-06 16:28:59,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,111 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:28:59,762 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:28:59,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:28:59,763 INFO L82 PathProgramCache]: Analyzing trace with hash 317563047, now seen corresponding path program 107 times [2021-10-06 16:28:59,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:28:59,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732192984] [2021-10-06 16:28:59,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:28:59,764 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:28:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:29:04,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:29:04,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:29:04,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732192984] [2021-10-06 16:29:04,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732192984] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:29:04,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645731983] [2021-10-06 16:29:04,572 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:29:04,573 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:29:04,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:29:04,574 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:29:04,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2021-10-06 16:29:06,485 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2021-10-06 16:29:06,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:29:06,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 110 conjunts are in the unsatisfiable core [2021-10-06 16:29:06,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:29:06,759 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:29:06,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645731983] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:29:06,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:29:06,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 109 [2021-10-06 16:29:06,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585805060] [2021-10-06 16:29:06,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2021-10-06 16:29:06,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:29:06,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-10-06 16:29:06,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2021-10-06 16:29:06,763 INFO L87 Difference]: Start difference. First operand 900 states and 2133 transitions. Second operand has 111 states, 110 states have (on average 1.0454545454545454) internal successors, (115), 110 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:29:10,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:29:10,651 INFO L93 Difference]: Finished difference Result 1778 states and 4217 transitions. [2021-10-06 16:29:10,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-10-06 16:29:10,651 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 110 states have (on average 1.0454545454545454) internal successors, (115), 110 states have internal predecessors, (115), 0 states have call successors, (0), 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 111 [2021-10-06 16:29:10,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:29:10,653 INFO L225 Difference]: With dead ends: 1778 [2021-10-06 16:29:10,653 INFO L226 Difference]: Without dead ends: 1340 [2021-10-06 16:29:10,654 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 4587.5ms TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2021-10-06 16:29:10,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2021-10-06 16:29:10,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 908. [2021-10-06 16:29:10,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 905 states have (on average 2.377900552486188) internal successors, (2152), 907 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:29:10,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 2152 transitions. [2021-10-06 16:29:10,665 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 2152 transitions. Word has length 111 [2021-10-06 16:29:10,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:29:10,665 INFO L470 AbstractCegarLoop]: Abstraction has 908 states and 2152 transitions. [2021-10-06 16:29:10,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 110 states have (on average 1.0454545454545454) internal successors, (115), 110 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:29:10,666 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 2152 transitions. [2021-10-06 16:29:10,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-10-06 16:29:10,667 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:29:10,667 INFO L512 BasicCegarLoop]: trace histogram [108, 1, 1, 1, 1] [2021-10-06 16:29:10,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2021-10-06 16:29:10,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2021-10-06 16:29:10,868 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:29:10,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:29:10,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1254521980, now seen corresponding path program 108 times [2021-10-06 16:29:10,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:29:10,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818572677] [2021-10-06 16:29:10,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:29:10,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:29:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:29:15,787 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:29:15,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:29:15,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818572677] [2021-10-06 16:29:15,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818572677] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:29:15,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873112285] [2021-10-06 16:29:15,787 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:29:15,788 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:29:15,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:29:15,788 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:29:15,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2021-10-06 16:29:17,771 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-10-06 16:29:17,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:29:17,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 111 conjunts are in the unsatisfiable core [2021-10-06 16:29:17,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:29:18,055 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:29:18,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873112285] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:29:18,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:29:18,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 110 [2021-10-06 16:29:18,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384980953] [2021-10-06 16:29:18,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2021-10-06 16:29:18,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:29:18,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-10-06 16:29:18,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2021-10-06 16:29:18,060 INFO L87 Difference]: Start difference. First operand 908 states and 2152 transitions. Second operand has 112 states, 111 states have (on average 1.045045045045045) internal successors, (116), 111 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:29:21,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:29:21,987 INFO L93 Difference]: Finished difference Result 1794 states and 4255 transitions. [2021-10-06 16:29:21,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-10-06 16:29:21,987 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 111 states have (on average 1.045045045045045) internal successors, (116), 111 states have internal predecessors, (116), 0 states have call successors, (0), 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 112 [2021-10-06 16:29:21,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:29:21,989 INFO L225 Difference]: With dead ends: 1794 [2021-10-06 16:29:21,990 INFO L226 Difference]: Without dead ends: 1352 [2021-10-06 16:29:21,990 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 4666.2ms TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2021-10-06 16:29:21,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-10-06 16:29:21,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 916. [2021-10-06 16:29:22,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 913 states have (on average 2.3778751369112814) internal successors, (2171), 915 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:29:22,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 2171 transitions. [2021-10-06 16:29:22,001 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 2171 transitions. Word has length 112 [2021-10-06 16:29:22,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:29:22,002 INFO L470 AbstractCegarLoop]: Abstraction has 916 states and 2171 transitions. [2021-10-06 16:29:22,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 111 states have (on average 1.045045045045045) internal successors, (116), 111 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:29:22,002 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 2171 transitions. [2021-10-06 16:29:22,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-06 16:29:22,003 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:29:22,003 INFO L512 BasicCegarLoop]: trace histogram [109, 1, 1, 1, 1] [2021-10-06 16:29:22,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2021-10-06 16:29:22,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2021-10-06 16:29:22,204 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:29:22,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:29:22,205 INFO L82 PathProgramCache]: Analyzing trace with hash 235477831, now seen corresponding path program 109 times [2021-10-06 16:29:22,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:29:22,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253133622] [2021-10-06 16:29:22,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:29:22,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:29:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:29:27,248 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:29:27,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:29:27,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253133622] [2021-10-06 16:29:27,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253133622] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:29:27,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130765772] [2021-10-06 16:29:27,249 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:29:27,249 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:29:27,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:29:27,250 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:29:27,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2021-10-06 16:29:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:29:29,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 112 conjunts are in the unsatisfiable core [2021-10-06 16:29:29,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:29:29,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:29:29,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130765772] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:29:29,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:29:29,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 111 [2021-10-06 16:29:29,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636859750] [2021-10-06 16:29:29,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2021-10-06 16:29:29,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:29:29,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2021-10-06 16:29:29,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2021-10-06 16:29:29,409 INFO L87 Difference]: Start difference. First operand 916 states and 2171 transitions. Second operand has 113 states, 112 states have (on average 1.0446428571428572) internal successors, (117), 112 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:29:33,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:29:33,417 INFO L93 Difference]: Finished difference Result 1810 states and 4293 transitions. [2021-10-06 16:29:33,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-10-06 16:29:33,418 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 112 states have (on average 1.0446428571428572) internal successors, (117), 112 states have internal predecessors, (117), 0 states have call successors, (0), 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 113 [2021-10-06 16:29:33,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:29:33,420 INFO L225 Difference]: With dead ends: 1810 [2021-10-06 16:29:33,420 INFO L226 Difference]: Without dead ends: 1364 [2021-10-06 16:29:33,421 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 4816.1ms TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2021-10-06 16:29:33,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2021-10-06 16:29:33,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 924. [2021-10-06 16:29:33,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 921 states have (on average 2.3778501628664497) internal successors, (2190), 923 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:29:33,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 2190 transitions. [2021-10-06 16:29:33,432 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 2190 transitions. Word has length 113 [2021-10-06 16:29:33,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:29:33,432 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 2190 transitions. [2021-10-06 16:29:33,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 112 states have (on average 1.0446428571428572) internal successors, (117), 112 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:29:33,432 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 2190 transitions. [2021-10-06 16:29:33,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-10-06 16:29:33,434 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:29:33,434 INFO L512 BasicCegarLoop]: trace histogram [110, 1, 1, 1, 1] [2021-10-06 16:29:33,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2021-10-06 16:29:33,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,114 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:29:33,634 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:29:33,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:29:33,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1290119716, now seen corresponding path program 110 times [2021-10-06 16:29:33,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:29:33,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840265513] [2021-10-06 16:29:33,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:29:33,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:29:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:29:38,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:29:38,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:29:38,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840265513] [2021-10-06 16:29:38,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840265513] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:29:38,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517052048] [2021-10-06 16:29:38,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:29:38,750 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:29:38,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:29:38,751 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:29:38,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2021-10-06 16:29:40,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:29:40,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:29:40,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 1047 conjuncts, 113 conjunts are in the unsatisfiable core [2021-10-06 16:29:40,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:29:40,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:29:40,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517052048] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:29:40,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:29:40,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 112 [2021-10-06 16:29:40,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048912634] [2021-10-06 16:29:40,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2021-10-06 16:29:40,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:29:40,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-10-06 16:29:40,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2021-10-06 16:29:40,978 INFO L87 Difference]: Start difference. First operand 924 states and 2190 transitions. Second operand has 114 states, 113 states have (on average 1.0442477876106195) internal successors, (118), 113 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:29:45,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:29:45,127 INFO L93 Difference]: Finished difference Result 1826 states and 4331 transitions. [2021-10-06 16:29:45,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-10-06 16:29:45,127 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 113 states have (on average 1.0442477876106195) internal successors, (118), 113 states have internal predecessors, (118), 0 states have call successors, (0), 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 114 [2021-10-06 16:29:45,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:29:45,130 INFO L225 Difference]: With dead ends: 1826 [2021-10-06 16:29:45,130 INFO L226 Difference]: Without dead ends: 1376 [2021-10-06 16:29:45,131 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 4881.4ms TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2021-10-06 16:29:45,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2021-10-06 16:29:45,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 932. [2021-10-06 16:29:45,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 929 states have (on average 2.3778256189451024) internal successors, (2209), 931 states have internal predecessors, (2209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:29:45,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 2209 transitions. [2021-10-06 16:29:45,149 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 2209 transitions. Word has length 114 [2021-10-06 16:29:45,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:29:45,149 INFO L470 AbstractCegarLoop]: Abstraction has 932 states and 2209 transitions. [2021-10-06 16:29:45,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 113 states have (on average 1.0442477876106195) internal successors, (118), 113 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:29:45,149 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 2209 transitions. [2021-10-06 16:29:45,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-06 16:29:45,151 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:29:45,151 INFO L512 BasicCegarLoop]: trace histogram [111, 1, 1, 1, 1] [2021-10-06 16:29:45,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2021-10-06 16:29:45,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,115 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:29:45,366 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:29:45,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:29:45,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1339003417, now seen corresponding path program 111 times [2021-10-06 16:29:45,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:29:45,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876258062] [2021-10-06 16:29:45,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:29:45,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:29:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:29:50,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:29:50,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:29:50,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876258062] [2021-10-06 16:29:50,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876258062] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:29:50,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978577258] [2021-10-06 16:29:50,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:29:50,538 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:29:50,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:29:50,539 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:29:50,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2021-10-06 16:29:52,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2021-10-06 16:29:52,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:29:52,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 114 conjunts are in the unsatisfiable core [2021-10-06 16:29:52,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:29:52,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:29:52,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978577258] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:29:52,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:29:52,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 113 [2021-10-06 16:29:52,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578406713] [2021-10-06 16:29:52,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2021-10-06 16:29:52,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:29:52,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-10-06 16:29:52,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2021-10-06 16:29:52,966 INFO L87 Difference]: Start difference. First operand 932 states and 2209 transitions. Second operand has 115 states, 114 states have (on average 1.043859649122807) internal successors, (119), 114 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:29:57,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:29:57,199 INFO L93 Difference]: Finished difference Result 1842 states and 4369 transitions. [2021-10-06 16:29:57,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-10-06 16:29:57,200 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 114 states have (on average 1.043859649122807) internal successors, (119), 114 states have internal predecessors, (119), 0 states have call successors, (0), 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 115 [2021-10-06 16:29:57,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:29:57,202 INFO L225 Difference]: With dead ends: 1842 [2021-10-06 16:29:57,202 INFO L226 Difference]: Without dead ends: 1388 [2021-10-06 16:29:57,203 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 4940.1ms TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2021-10-06 16:29:57,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2021-10-06 16:29:57,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 940. [2021-10-06 16:29:57,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 937 states have (on average 2.377801494130203) internal successors, (2228), 939 states have internal predecessors, (2228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:29:57,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 2228 transitions. [2021-10-06 16:29:57,214 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 2228 transitions. Word has length 115 [2021-10-06 16:29:57,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:29:57,214 INFO L470 AbstractCegarLoop]: Abstraction has 940 states and 2228 transitions. [2021-10-06 16:29:57,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 114 states have (on average 1.043859649122807) internal successors, (119), 114 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:29:57,214 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 2228 transitions. [2021-10-06 16:29:57,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-10-06 16:29:57,215 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:29:57,216 INFO L512 BasicCegarLoop]: trace histogram [112, 1, 1, 1, 1] [2021-10-06 16:29:57,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2021-10-06 16:29:57,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable121 [2021-10-06 16:29:57,421 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:29:57,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:29:57,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1440569148, now seen corresponding path program 112 times [2021-10-06 16:29:57,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:29:57,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790739480] [2021-10-06 16:29:57,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:29:57,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:29:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:30:02,699 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:30:02,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:30:02,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790739480] [2021-10-06 16:30:02,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790739480] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:30:02,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938418640] [2021-10-06 16:30:02,700 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:30:02,700 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:30:02,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:30:02,701 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:30:02,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2021-10-06 16:30:04,702 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:30:04,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:30:04,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 115 conjunts are in the unsatisfiable core [2021-10-06 16:30:04,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:30:04,987 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:30:04,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938418640] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:30:04,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:30:04,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 114 [2021-10-06 16:30:04,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665368782] [2021-10-06 16:30:04,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2021-10-06 16:30:04,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:30:04,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2021-10-06 16:30:04,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2021-10-06 16:30:04,991 INFO L87 Difference]: Start difference. First operand 940 states and 2228 transitions. Second operand has 116 states, 115 states have (on average 1.0434782608695652) internal successors, (120), 115 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:30:09,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:30:09,378 INFO L93 Difference]: Finished difference Result 1858 states and 4407 transitions. [2021-10-06 16:30:09,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-10-06 16:30:09,378 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 115 states have (on average 1.0434782608695652) internal successors, (120), 115 states have internal predecessors, (120), 0 states have call successors, (0), 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 116 [2021-10-06 16:30:09,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:30:09,380 INFO L225 Difference]: With dead ends: 1858 [2021-10-06 16:30:09,380 INFO L226 Difference]: Without dead ends: 1400 [2021-10-06 16:30:09,381 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 5024.3ms TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2021-10-06 16:30:09,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2021-10-06 16:30:09,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 948. [2021-10-06 16:30:09,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 945 states have (on average 2.3777777777777778) internal successors, (2247), 947 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:30:09,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 2247 transitions. [2021-10-06 16:30:09,393 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 2247 transitions. Word has length 116 [2021-10-06 16:30:09,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:30:09,393 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 2247 transitions. [2021-10-06 16:30:09,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 115 states have (on average 1.0434782608695652) internal successors, (120), 115 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:30:09,393 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 2247 transitions. [2021-10-06 16:30:09,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-06 16:30:09,394 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:30:09,394 INFO L512 BasicCegarLoop]: trace histogram [113, 1, 1, 1, 1] [2021-10-06 16:30:09,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2021-10-06 16:30:09,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-10-06 16:30:09,595 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:30:09,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:30:09,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1707972743, now seen corresponding path program 113 times [2021-10-06 16:30:09,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:30:09,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201104988] [2021-10-06 16:30:09,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:30:09,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:30:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:30:14,976 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:30:14,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:30:14,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201104988] [2021-10-06 16:30:14,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201104988] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:30:14,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408095083] [2021-10-06 16:30:14,977 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:30:14,977 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:30:14,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:30:14,978 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:30:14,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2021-10-06 16:30:17,080 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2021-10-06 16:30:17,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:30:17,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 116 conjunts are in the unsatisfiable core [2021-10-06 16:30:17,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:30:17,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:30:17,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408095083] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:30:17,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:30:17,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 115 [2021-10-06 16:30:17,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123792763] [2021-10-06 16:30:17,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2021-10-06 16:30:17,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:30:17,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2021-10-06 16:30:17,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2021-10-06 16:30:17,372 INFO L87 Difference]: Start difference. First operand 948 states and 2247 transitions. Second operand has 117 states, 116 states have (on average 1.043103448275862) internal successors, (121), 116 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:30:21,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:30:21,678 INFO L93 Difference]: Finished difference Result 1874 states and 4445 transitions. [2021-10-06 16:30:21,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-10-06 16:30:21,679 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 116 states have (on average 1.043103448275862) internal successors, (121), 116 states have internal predecessors, (121), 0 states have call successors, (0), 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 117 [2021-10-06 16:30:21,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:30:21,681 INFO L225 Difference]: With dead ends: 1874 [2021-10-06 16:30:21,681 INFO L226 Difference]: Without dead ends: 1412 [2021-10-06 16:30:21,682 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 5140.7ms TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2021-10-06 16:30:21,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2021-10-06 16:30:21,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 956. [2021-10-06 16:30:21,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 953 states have (on average 2.377754459601259) internal successors, (2266), 955 states have internal predecessors, (2266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:30:21,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 2266 transitions. [2021-10-06 16:30:21,694 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 2266 transitions. Word has length 117 [2021-10-06 16:30:21,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:30:21,694 INFO L470 AbstractCegarLoop]: Abstraction has 956 states and 2266 transitions. [2021-10-06 16:30:21,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 116 states have (on average 1.043103448275862) internal successors, (121), 116 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:30:21,694 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 2266 transitions. [2021-10-06 16:30:21,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-10-06 16:30:21,695 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:30:21,695 INFO L512 BasicCegarLoop]: trace histogram [114, 1, 1, 1, 1] [2021-10-06 16:30:21,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2021-10-06 16:30:21,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123,118 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:30:21,896 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:30:21,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:30:21,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1407549596, now seen corresponding path program 114 times [2021-10-06 16:30:21,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:30:21,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090230406] [2021-10-06 16:30:21,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:30:21,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:30:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:30:27,341 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:30:27,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:30:27,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090230406] [2021-10-06 16:30:27,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090230406] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:30:27,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101301041] [2021-10-06 16:30:27,342 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:30:27,342 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:30:27,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:30:27,343 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:30:27,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2021-10-06 16:30:29,533 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2021-10-06 16:30:29,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:30:29,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 117 conjunts are in the unsatisfiable core [2021-10-06 16:30:29,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:30:29,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:30:29,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101301041] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:30:29,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:30:29,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 116 [2021-10-06 16:30:29,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937231298] [2021-10-06 16:30:29,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2021-10-06 16:30:29,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:30:29,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2021-10-06 16:30:29,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2021-10-06 16:30:29,825 INFO L87 Difference]: Start difference. First operand 956 states and 2266 transitions. Second operand has 118 states, 117 states have (on average 1.0427350427350428) internal successors, (122), 117 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:30:34,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:30:34,371 INFO L93 Difference]: Finished difference Result 1890 states and 4483 transitions. [2021-10-06 16:30:34,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2021-10-06 16:30:34,371 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 117 states have (on average 1.0427350427350428) internal successors, (122), 117 states have internal predecessors, (122), 0 states have call successors, (0), 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 118 [2021-10-06 16:30:34,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:30:34,373 INFO L225 Difference]: With dead ends: 1890 [2021-10-06 16:30:34,373 INFO L226 Difference]: Without dead ends: 1424 [2021-10-06 16:30:34,374 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 5199.1ms TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2021-10-06 16:30:34,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2021-10-06 16:30:34,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 964. [2021-10-06 16:30:34,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 961 states have (on average 2.3777315296566077) internal successors, (2285), 963 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:30:34,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 2285 transitions. [2021-10-06 16:30:34,386 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 2285 transitions. Word has length 118 [2021-10-06 16:30:34,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:30:34,386 INFO L470 AbstractCegarLoop]: Abstraction has 964 states and 2285 transitions. [2021-10-06 16:30:34,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 117 states have (on average 1.0427350427350428) internal successors, (122), 117 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:30:34,386 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 2285 transitions. [2021-10-06 16:30:34,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-10-06 16:30:34,388 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:30:34,388 INFO L512 BasicCegarLoop]: trace histogram [115, 1, 1, 1, 1] [2021-10-06 16:30:34,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2021-10-06 16:30:34,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2021-10-06 16:30:34,602 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:30:34,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:30:34,603 INFO L82 PathProgramCache]: Analyzing trace with hash 684366631, now seen corresponding path program 115 times [2021-10-06 16:30:34,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:30:34,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970726279] [2021-10-06 16:30:34,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:30:34,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:30:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:30:40,144 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:30:40,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:30:40,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970726279] [2021-10-06 16:30:40,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970726279] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:30:40,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181516746] [2021-10-06 16:30:40,145 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:30:40,145 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:30:40,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:30:40,146 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:30:40,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2021-10-06 16:30:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:30:42,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 118 conjunts are in the unsatisfiable core [2021-10-06 16:30:42,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:30:42,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:30:42,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181516746] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:30:42,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:30:42,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 117 [2021-10-06 16:30:42,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348229541] [2021-10-06 16:30:42,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2021-10-06 16:30:42,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:30:42,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2021-10-06 16:30:42,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2021-10-06 16:30:42,547 INFO L87 Difference]: Start difference. First operand 964 states and 2285 transitions. Second operand has 119 states, 118 states have (on average 1.0423728813559323) internal successors, (123), 118 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:30:47,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:30:47,363 INFO L93 Difference]: Finished difference Result 1906 states and 4521 transitions. [2021-10-06 16:30:47,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-10-06 16:30:47,364 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 118 states have (on average 1.0423728813559323) internal successors, (123), 118 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-10-06 16:30:47,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:30:47,366 INFO L225 Difference]: With dead ends: 1906 [2021-10-06 16:30:47,366 INFO L226 Difference]: Without dead ends: 1436 [2021-10-06 16:30:47,367 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 5283.2ms TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2021-10-06 16:30:47,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2021-10-06 16:30:47,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 972. [2021-10-06 16:30:47,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 969 states have (on average 2.3777089783281733) internal successors, (2304), 971 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:30:47,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 2304 transitions. [2021-10-06 16:30:47,378 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 2304 transitions. Word has length 119 [2021-10-06 16:30:47,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:30:47,379 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 2304 transitions. [2021-10-06 16:30:47,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 118 states have (on average 1.0423728813559323) internal successors, (123), 118 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:30:47,379 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 2304 transitions. [2021-10-06 16:30:47,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-06 16:30:47,380 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:30:47,380 INFO L512 BasicCegarLoop]: trace histogram [116, 1, 1, 1, 1] [2021-10-06 16:30:47,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2021-10-06 16:30:47,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2021-10-06 16:30:47,581 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:30:47,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:30:47,582 INFO L82 PathProgramCache]: Analyzing trace with hash -259468804, now seen corresponding path program 116 times [2021-10-06 16:30:47,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:30:47,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768895019] [2021-10-06 16:30:47,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:30:47,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:30:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:30:53,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:30:53,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:30:53,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768895019] [2021-10-06 16:30:53,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768895019] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:30:53,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875040524] [2021-10-06 16:30:53,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:30:53,246 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:30:53,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:30:53,247 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:30:53,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2021-10-06 16:30:55,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:30:55,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:30:55,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 119 conjunts are in the unsatisfiable core [2021-10-06 16:30:55,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:30:55,644 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:30:55,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875040524] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:30:55,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:30:55,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 118 [2021-10-06 16:30:55,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854093881] [2021-10-06 16:30:55,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2021-10-06 16:30:55,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:30:55,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2021-10-06 16:30:55,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2021-10-06 16:30:55,648 INFO L87 Difference]: Start difference. First operand 972 states and 2304 transitions. Second operand has 120 states, 119 states have (on average 1.0420168067226891) internal successors, (124), 119 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:31:00,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:31:00,381 INFO L93 Difference]: Finished difference Result 1922 states and 4559 transitions. [2021-10-06 16:31:00,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-10-06 16:31:00,382 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 119 states have (on average 1.0420168067226891) internal successors, (124), 119 states have internal predecessors, (124), 0 states have call successors, (0), 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 120 [2021-10-06 16:31:00,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:31:00,384 INFO L225 Difference]: With dead ends: 1922 [2021-10-06 16:31:00,384 INFO L226 Difference]: Without dead ends: 1448 [2021-10-06 16:31:00,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 5407.0ms TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2021-10-06 16:31:00,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2021-10-06 16:31:00,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 980. [2021-10-06 16:31:00,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 977 states have (on average 2.377686796315251) internal successors, (2323), 979 states have internal predecessors, (2323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:31:00,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 2323 transitions. [2021-10-06 16:31:00,397 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 2323 transitions. Word has length 120 [2021-10-06 16:31:00,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:31:00,398 INFO L470 AbstractCegarLoop]: Abstraction has 980 states and 2323 transitions. [2021-10-06 16:31:00,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 119 states have (on average 1.0420168067226891) internal successors, (124), 119 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:31:00,398 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 2323 transitions. [2021-10-06 16:31:00,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-10-06 16:31:00,399 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:31:00,399 INFO L512 BasicCegarLoop]: trace histogram [117, 1, 1, 1, 1] [2021-10-06 16:31:00,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2021-10-06 16:31:00,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2021-10-06 16:31:00,607 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:31:00,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:31:00,608 INFO L82 PathProgramCache]: Analyzing trace with hash 546403783, now seen corresponding path program 117 times [2021-10-06 16:31:00,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:31:00,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414066764] [2021-10-06 16:31:00,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:31:00,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:31:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:31:06,359 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:31:06,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:31:06,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414066764] [2021-10-06 16:31:06,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414066764] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:31:06,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350949004] [2021-10-06 16:31:06,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:31:06,360 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:31:06,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:31:06,362 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:31:06,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2021-10-06 16:31:08,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 60 check-sat command(s) [2021-10-06 16:31:08,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:31:08,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 120 conjunts are in the unsatisfiable core [2021-10-06 16:31:08,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:31:08,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:31:08,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350949004] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:31:08,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:31:08,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 119 [2021-10-06 16:31:08,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358403316] [2021-10-06 16:31:08,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2021-10-06 16:31:08,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:31:08,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2021-10-06 16:31:08,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2021-10-06 16:31:08,960 INFO L87 Difference]: Start difference. First operand 980 states and 2323 transitions. Second operand has 121 states, 120 states have (on average 1.0416666666666667) internal successors, (125), 120 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:31:13,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:31:13,792 INFO L93 Difference]: Finished difference Result 1938 states and 4597 transitions. [2021-10-06 16:31:13,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2021-10-06 16:31:13,792 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 120 states have (on average 1.0416666666666667) internal successors, (125), 120 states have internal predecessors, (125), 0 states have call successors, (0), 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 121 [2021-10-06 16:31:13,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:31:13,795 INFO L225 Difference]: With dead ends: 1938 [2021-10-06 16:31:13,795 INFO L226 Difference]: Without dead ends: 1460 [2021-10-06 16:31:13,797 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 5487.7ms TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2021-10-06 16:31:13,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-10-06 16:31:13,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 988. [2021-10-06 16:31:13,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 985 states have (on average 2.3776649746192895) internal successors, (2342), 987 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:31:13,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 2342 transitions. [2021-10-06 16:31:13,811 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 2342 transitions. Word has length 121 [2021-10-06 16:31:13,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:31:13,812 INFO L470 AbstractCegarLoop]: Abstraction has 988 states and 2342 transitions. [2021-10-06 16:31:13,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 120 states have (on average 1.0416666666666667) internal successors, (125), 120 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:31:13,812 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 2342 transitions. [2021-10-06 16:31:13,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-06 16:31:13,814 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:31:13,814 INFO L512 BasicCegarLoop]: trace histogram [118, 1, 1, 1, 1] [2021-10-06 16:31:13,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2021-10-06 16:31:14,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2021-10-06 16:31:14,020 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:31:14,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:31:14,021 INFO L82 PathProgramCache]: Analyzing trace with hash -241349796, now seen corresponding path program 118 times [2021-10-06 16:31:14,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:31:14,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776193456] [2021-10-06 16:31:14,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:31:14,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:31:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:31:19,878 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:31:19,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:31:19,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776193456] [2021-10-06 16:31:19,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776193456] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:31:19,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747963767] [2021-10-06 16:31:19,879 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:31:19,879 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:31:19,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:31:19,880 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:31:19,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2021-10-06 16:31:22,110 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:31:22,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:31:22,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 1119 conjuncts, 121 conjunts are in the unsatisfiable core [2021-10-06 16:31:22,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:31:22,411 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:31:22,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747963767] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:31:22,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:31:22,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 120 [2021-10-06 16:31:22,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021943393] [2021-10-06 16:31:22,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2021-10-06 16:31:22,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:31:22,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2021-10-06 16:31:22,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2021-10-06 16:31:22,414 INFO L87 Difference]: Start difference. First operand 988 states and 2342 transitions. Second operand has 122 states, 121 states have (on average 1.0413223140495869) internal successors, (126), 121 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:31:27,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:31:27,610 INFO L93 Difference]: Finished difference Result 1954 states and 4635 transitions. [2021-10-06 16:31:27,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2021-10-06 16:31:27,611 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 121 states have (on average 1.0413223140495869) internal successors, (126), 121 states have internal predecessors, (126), 0 states have call successors, (0), 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 122 [2021-10-06 16:31:27,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:31:27,613 INFO L225 Difference]: With dead ends: 1954 [2021-10-06 16:31:27,613 INFO L226 Difference]: Without dead ends: 1472 [2021-10-06 16:31:27,614 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 5607.8ms TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2021-10-06 16:31:27,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2021-10-06 16:31:27,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 996. [2021-10-06 16:31:27,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 993 states have (on average 2.377643504531722) internal successors, (2361), 995 states have internal predecessors, (2361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:31:27,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 2361 transitions. [2021-10-06 16:31:27,627 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 2361 transitions. Word has length 122 [2021-10-06 16:31:27,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:31:27,628 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 2361 transitions. [2021-10-06 16:31:27,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 121 states have (on average 1.0413223140495869) internal successors, (126), 121 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:31:27,628 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 2361 transitions. [2021-10-06 16:31:27,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-10-06 16:31:27,629 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:31:27,629 INFO L512 BasicCegarLoop]: trace histogram [119, 1, 1, 1, 1] [2021-10-06 16:31:27,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2021-10-06 16:31:27,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,123 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:31:27,830 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:31:27,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:31:27,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1108093031, now seen corresponding path program 119 times [2021-10-06 16:31:27,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:31:27,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449094118] [2021-10-06 16:31:27,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:31:27,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:31:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:31:33,802 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:31:33,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:31:33,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449094118] [2021-10-06 16:31:33,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449094118] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:31:33,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748181586] [2021-10-06 16:31:33,803 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:31:33,803 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:31:33,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:31:33,804 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:31:33,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2021-10-06 16:31:36,175 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2021-10-06 16:31:36,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:31:36,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 122 conjunts are in the unsatisfiable core [2021-10-06 16:31:36,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:31:36,477 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:31:36,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748181586] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:31:36,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:31:36,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 121 [2021-10-06 16:31:36,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940366335] [2021-10-06 16:31:36,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2021-10-06 16:31:36,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:31:36,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2021-10-06 16:31:36,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2021-10-06 16:31:36,480 INFO L87 Difference]: Start difference. First operand 996 states and 2361 transitions. Second operand has 123 states, 122 states have (on average 1.040983606557377) internal successors, (127), 122 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:31:41,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:31:41,530 INFO L93 Difference]: Finished difference Result 1970 states and 4673 transitions. [2021-10-06 16:31:41,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2021-10-06 16:31:41,530 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 122 states have (on average 1.040983606557377) internal successors, (127), 122 states have internal predecessors, (127), 0 states have call successors, (0), 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 123 [2021-10-06 16:31:41,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:31:41,533 INFO L225 Difference]: With dead ends: 1970 [2021-10-06 16:31:41,533 INFO L226 Difference]: Without dead ends: 1484 [2021-10-06 16:31:41,534 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 5709.2ms TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2021-10-06 16:31:41,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2021-10-06 16:31:41,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1004. [2021-10-06 16:31:41,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1001 states have (on average 2.3776223776223775) internal successors, (2380), 1003 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:31:41,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 2380 transitions. [2021-10-06 16:31:41,552 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 2380 transitions. Word has length 123 [2021-10-06 16:31:41,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:31:41,552 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 2380 transitions. [2021-10-06 16:31:41,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 122 states have (on average 1.040983606557377) internal successors, (127), 122 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:31:41,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 2380 transitions. [2021-10-06 16:31:41,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-10-06 16:31:41,554 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:31:41,554 INFO L512 BasicCegarLoop]: trace histogram [120, 1, 1, 1, 1] [2021-10-06 16:31:41,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2021-10-06 16:31:41,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2021-10-06 16:31:41,768 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:31:41,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:31:41,768 INFO L82 PathProgramCache]: Analyzing trace with hash -8852292, now seen corresponding path program 120 times [2021-10-06 16:31:41,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:31:41,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190666546] [2021-10-06 16:31:41,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:31:41,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:31:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:31:47,867 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:31:47,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:31:47,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190666546] [2021-10-06 16:31:47,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190666546] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:31:47,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993624712] [2021-10-06 16:31:47,868 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:31:47,868 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:31:47,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:31:47,873 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:31:47,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2021-10-06 16:31:50,285 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2021-10-06 16:31:50,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:31:50,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 123 conjunts are in the unsatisfiable core [2021-10-06 16:31:50,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:31:50,594 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:31:50,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993624712] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:31:50,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:31:50,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 122 [2021-10-06 16:31:50,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16032055] [2021-10-06 16:31:50,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2021-10-06 16:31:50,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:31:50,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2021-10-06 16:31:50,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2021-10-06 16:31:50,598 INFO L87 Difference]: Start difference. First operand 1004 states and 2380 transitions. Second operand has 124 states, 123 states have (on average 1.0406504065040652) internal successors, (128), 123 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:31:55,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:31:55,859 INFO L93 Difference]: Finished difference Result 1986 states and 4711 transitions. [2021-10-06 16:31:55,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-10-06 16:31:55,859 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 123 states have (on average 1.0406504065040652) internal successors, (128), 123 states have internal predecessors, (128), 0 states have call successors, (0), 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 124 [2021-10-06 16:31:55,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:31:55,861 INFO L225 Difference]: With dead ends: 1986 [2021-10-06 16:31:55,861 INFO L226 Difference]: Without dead ends: 1496 [2021-10-06 16:31:55,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 5831.4ms TimeCoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2021-10-06 16:31:55,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-10-06 16:31:55,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1012. [2021-10-06 16:31:55,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 1009 states have (on average 2.377601585728444) internal successors, (2399), 1011 states have internal predecessors, (2399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:31:55,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 2399 transitions. [2021-10-06 16:31:55,874 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 2399 transitions. Word has length 124 [2021-10-06 16:31:55,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:31:55,875 INFO L470 AbstractCegarLoop]: Abstraction has 1012 states and 2399 transitions. [2021-10-06 16:31:55,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 123 states have (on average 1.0406504065040652) internal successors, (128), 123 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:31:55,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 2399 transitions. [2021-10-06 16:31:55,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-06 16:31:55,876 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:31:55,876 INFO L512 BasicCegarLoop]: trace histogram [121, 1, 1, 1, 1] [2021-10-06 16:31:55,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2021-10-06 16:31:56,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,125 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:31:56,077 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:31:56,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:31:56,078 INFO L82 PathProgramCache]: Analyzing trace with hash -274418937, now seen corresponding path program 121 times [2021-10-06 16:31:56,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:31:56,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222824515] [2021-10-06 16:31:56,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:31:56,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:31:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:32:02,269 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:32:02,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:32:02,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222824515] [2021-10-06 16:32:02,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222824515] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:32:02,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684884010] [2021-10-06 16:32:02,270 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:32:02,270 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:32:02,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:32:02,277 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:32:02,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2021-10-06 16:32:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:32:04,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 124 conjunts are in the unsatisfiable core [2021-10-06 16:32:04,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:32:04,960 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:32:04,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684884010] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:32:04,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:32:04,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 123 [2021-10-06 16:32:04,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72392391] [2021-10-06 16:32:04,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2021-10-06 16:32:04,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:32:04,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2021-10-06 16:32:04,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2021-10-06 16:32:04,964 INFO L87 Difference]: Start difference. First operand 1012 states and 2399 transitions. Second operand has 125 states, 124 states have (on average 1.0403225806451613) internal successors, (129), 124 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:32:10,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:32:10,471 INFO L93 Difference]: Finished difference Result 2002 states and 4749 transitions. [2021-10-06 16:32:10,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-10-06 16:32:10,472 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 124 states have (on average 1.0403225806451613) internal successors, (129), 124 states have internal predecessors, (129), 0 states have call successors, (0), 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 125 [2021-10-06 16:32:10,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:32:10,474 INFO L225 Difference]: With dead ends: 2002 [2021-10-06 16:32:10,474 INFO L226 Difference]: Without dead ends: 1508 [2021-10-06 16:32:10,475 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 5916.4ms TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2021-10-06 16:32:10,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2021-10-06 16:32:10,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1020. [2021-10-06 16:32:10,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 1017 states have (on average 2.377581120943953) internal successors, (2418), 1019 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:32:10,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 2418 transitions. [2021-10-06 16:32:10,488 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 2418 transitions. Word has length 125 [2021-10-06 16:32:10,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:32:10,488 INFO L470 AbstractCegarLoop]: Abstraction has 1020 states and 2418 transitions. [2021-10-06 16:32:10,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 124 states have (on average 1.0403225806451613) internal successors, (129), 124 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:32:10,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 2418 transitions. [2021-10-06 16:32:10,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-10-06 16:32:10,489 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:32:10,489 INFO L512 BasicCegarLoop]: trace histogram [122, 1, 1, 1, 1] [2021-10-06 16:32:10,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2021-10-06 16:32:10,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,126 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:32:10,696 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:32:10,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:32:10,697 INFO L82 PathProgramCache]: Analyzing trace with hash 82949660, now seen corresponding path program 122 times [2021-10-06 16:32:10,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:32:10,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418701400] [2021-10-06 16:32:10,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:32:10,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:32:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:32:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:32:16,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:32:16,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418701400] [2021-10-06 16:32:16,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418701400] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:32:16,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889841151] [2021-10-06 16:32:16,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:32:16,997 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:32:16,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:32:16,998 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:32:17,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2021-10-06 16:32:19,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:32:19,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:32:19,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 125 conjunts are in the unsatisfiable core [2021-10-06 16:32:19,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:32:19,710 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:32:19,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889841151] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:32:19,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:32:19,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 124 [2021-10-06 16:32:19,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979500618] [2021-10-06 16:32:19,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2021-10-06 16:32:19,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:32:19,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2021-10-06 16:32:19,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2021-10-06 16:32:19,714 INFO L87 Difference]: Start difference. First operand 1020 states and 2418 transitions. Second operand has 126 states, 125 states have (on average 1.04) internal successors, (130), 125 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:32:25,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:32:25,444 INFO L93 Difference]: Finished difference Result 2018 states and 4787 transitions. [2021-10-06 16:32:25,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-10-06 16:32:25,444 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 125 states have (on average 1.04) internal successors, (130), 125 states have internal predecessors, (130), 0 states have call successors, (0), 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 126 [2021-10-06 16:32:25,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:32:25,447 INFO L225 Difference]: With dead ends: 2018 [2021-10-06 16:32:25,447 INFO L226 Difference]: Without dead ends: 1520 [2021-10-06 16:32:25,448 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 6029.6ms TimeCoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2021-10-06 16:32:25,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-10-06 16:32:25,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1028. [2021-10-06 16:32:25,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1025 states have (on average 2.377560975609756) internal successors, (2437), 1027 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:32:25,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 2437 transitions. [2021-10-06 16:32:25,460 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 2437 transitions. Word has length 126 [2021-10-06 16:32:25,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:32:25,461 INFO L470 AbstractCegarLoop]: Abstraction has 1028 states and 2437 transitions. [2021-10-06 16:32:25,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 125 states have (on average 1.04) internal successors, (130), 125 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:32:25,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 2437 transitions. [2021-10-06 16:32:25,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-10-06 16:32:25,462 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:32:25,462 INFO L512 BasicCegarLoop]: trace histogram [123, 1, 1, 1, 1] [2021-10-06 16:32:25,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2021-10-06 16:32:25,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,127 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:32:25,663 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:32:25,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:32:25,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1723525721, now seen corresponding path program 123 times [2021-10-06 16:32:25,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:32:25,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546368341] [2021-10-06 16:32:25,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:32:25,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:32:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:32:32,086 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:32:32,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:32:32,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546368341] [2021-10-06 16:32:32,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546368341] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:32:32,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276492025] [2021-10-06 16:32:32,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:32:32,087 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:32:32,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:32:32,090 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:32:32,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2021-10-06 16:32:34,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2021-10-06 16:32:34,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:32:34,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 126 conjunts are in the unsatisfiable core [2021-10-06 16:32:34,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:32:34,908 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:32:34,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276492025] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:32:34,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:32:34,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 125 [2021-10-06 16:32:34,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361515722] [2021-10-06 16:32:34,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2021-10-06 16:32:34,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:32:34,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2021-10-06 16:32:34,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2021-10-06 16:32:34,912 INFO L87 Difference]: Start difference. First operand 1028 states and 2437 transitions. Second operand has 127 states, 126 states have (on average 1.0396825396825398) internal successors, (131), 126 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:32:40,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:32:40,760 INFO L93 Difference]: Finished difference Result 2034 states and 4825 transitions. [2021-10-06 16:32:40,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-10-06 16:32:40,761 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 126 states have (on average 1.0396825396825398) internal successors, (131), 126 states have internal predecessors, (131), 0 states have call successors, (0), 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 127 [2021-10-06 16:32:40,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:32:40,763 INFO L225 Difference]: With dead ends: 2034 [2021-10-06 16:32:40,763 INFO L226 Difference]: Without dead ends: 1532 [2021-10-06 16:32:40,764 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 6105.8ms TimeCoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2021-10-06 16:32:40,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2021-10-06 16:32:40,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1036. [2021-10-06 16:32:40,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 1033 states have (on average 2.377541142303969) internal successors, (2456), 1035 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:32:40,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 2456 transitions. [2021-10-06 16:32:40,776 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 2456 transitions. Word has length 127 [2021-10-06 16:32:40,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:32:40,776 INFO L470 AbstractCegarLoop]: Abstraction has 1036 states and 2456 transitions. [2021-10-06 16:32:40,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 126 states have (on average 1.0396825396825398) internal successors, (131), 126 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:32:40,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 2456 transitions. [2021-10-06 16:32:40,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-10-06 16:32:40,778 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:32:40,778 INFO L512 BasicCegarLoop]: trace histogram [124, 1, 1, 1, 1] [2021-10-06 16:32:40,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2021-10-06 16:32:40,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2021-10-06 16:32:40,979 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:32:40,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:32:40,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1889687684, now seen corresponding path program 124 times [2021-10-06 16:32:40,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:32:40,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881941726] [2021-10-06 16:32:40,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:32:40,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:32:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:32:47,474 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:32:47,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:32:47,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881941726] [2021-10-06 16:32:47,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881941726] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:32:47,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284235589] [2021-10-06 16:32:47,475 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:32:47,475 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:32:47,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:32:47,477 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:32:47,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2021-10-06 16:32:49,888 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:32:49,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:32:49,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 127 conjunts are in the unsatisfiable core [2021-10-06 16:32:49,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:32:50,222 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:32:50,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284235589] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:32:50,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:32:50,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125] total 126 [2021-10-06 16:32:50,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660062980] [2021-10-06 16:32:50,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2021-10-06 16:32:50,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:32:50,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-10-06 16:32:50,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2021-10-06 16:32:50,226 INFO L87 Difference]: Start difference. First operand 1036 states and 2456 transitions. Second operand has 128 states, 127 states have (on average 1.0393700787401574) internal successors, (132), 127 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:32:56,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:32:56,123 INFO L93 Difference]: Finished difference Result 2050 states and 4863 transitions. [2021-10-06 16:32:56,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-10-06 16:32:56,123 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 1.0393700787401574) internal successors, (132), 127 states have internal predecessors, (132), 0 states have call successors, (0), 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 128 [2021-10-06 16:32:56,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:32:56,126 INFO L225 Difference]: With dead ends: 2050 [2021-10-06 16:32:56,126 INFO L226 Difference]: Without dead ends: 1544 [2021-10-06 16:32:56,127 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 6178.0ms TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2021-10-06 16:32:56,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2021-10-06 16:32:56,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1044. [2021-10-06 16:32:56,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 1041 states have (on average 2.377521613832853) internal successors, (2475), 1043 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:32:56,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 2475 transitions. [2021-10-06 16:32:56,139 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 2475 transitions. Word has length 128 [2021-10-06 16:32:56,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:32:56,139 INFO L470 AbstractCegarLoop]: Abstraction has 1044 states and 2475 transitions. [2021-10-06 16:32:56,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 1.0393700787401574) internal successors, (132), 127 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:32:56,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 2475 transitions. [2021-10-06 16:32:56,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-10-06 16:32:56,141 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:32:56,141 INFO L512 BasicCegarLoop]: trace histogram [125, 1, 1, 1, 1] [2021-10-06 16:32:56,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Ended with exit code 0 [2021-10-06 16:32:56,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134,129 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:32:56,342 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:32:56,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:32:56,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1549226055, now seen corresponding path program 125 times [2021-10-06 16:32:56,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:32:56,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963303706] [2021-10-06 16:32:56,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:32:56,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:32:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:33:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:33:02,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:33:02,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963303706] [2021-10-06 16:33:02,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963303706] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:33:02,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415608664] [2021-10-06 16:33:02,935 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:33:02,935 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:33:02,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:33:02,937 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:33:02,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2021-10-06 16:33:05,477 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2021-10-06 16:33:05,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:33:05,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 128 conjunts are in the unsatisfiable core [2021-10-06 16:33:05,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:33:05,793 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:33:05,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415608664] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:33:05,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:33:05,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 127 [2021-10-06 16:33:05,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794724421] [2021-10-06 16:33:05,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2021-10-06 16:33:05,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:33:05,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2021-10-06 16:33:05,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2021-10-06 16:33:05,797 INFO L87 Difference]: Start difference. First operand 1044 states and 2475 transitions. Second operand has 129 states, 128 states have (on average 1.0390625) internal successors, (133), 128 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:33:11,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:33:11,476 INFO L93 Difference]: Finished difference Result 2066 states and 4901 transitions. [2021-10-06 16:33:11,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2021-10-06 16:33:11,476 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 128 states have (on average 1.0390625) internal successors, (133), 128 states have internal predecessors, (133), 0 states have call successors, (0), 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 129 [2021-10-06 16:33:11,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:33:11,479 INFO L225 Difference]: With dead ends: 2066 [2021-10-06 16:33:11,479 INFO L226 Difference]: Without dead ends: 1556 [2021-10-06 16:33:11,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 6287.4ms TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2021-10-06 16:33:11,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2021-10-06 16:33:11,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1052. [2021-10-06 16:33:11,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 1049 states have (on average 2.3775023832221165) internal successors, (2494), 1051 states have internal predecessors, (2494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:33:11,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 2494 transitions. [2021-10-06 16:33:11,500 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 2494 transitions. Word has length 129 [2021-10-06 16:33:11,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:33:11,500 INFO L470 AbstractCegarLoop]: Abstraction has 1052 states and 2494 transitions. [2021-10-06 16:33:11,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 128 states have (on average 1.0390625) internal successors, (133), 128 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:33:11,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 2494 transitions. [2021-10-06 16:33:11,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-10-06 16:33:11,502 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:33:11,502 INFO L512 BasicCegarLoop]: trace histogram [126, 1, 1, 1, 1] [2021-10-06 16:33:11,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Forceful destruction successful, exit code 0 [2021-10-06 16:33:11,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2021-10-06 16:33:11,717 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:33:11,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:33:11,717 INFO L82 PathProgramCache]: Analyzing trace with hash 781369564, now seen corresponding path program 126 times [2021-10-06 16:33:11,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:33:11,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969057698] [2021-10-06 16:33:11,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:33:11,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:33:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:33:18,597 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:33:18,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:33:18,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969057698] [2021-10-06 16:33:18,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969057698] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:33:18,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014634701] [2021-10-06 16:33:18,598 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 16:33:18,598 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:33:18,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:33:18,599 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:33:18,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2021-10-06 16:33:21,347 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2021-10-06 16:33:21,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:33:21,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 1191 conjuncts, 129 conjunts are in the unsatisfiable core [2021-10-06 16:33:21,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:33:21,695 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:33:21,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014634701] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:33:21,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:33:21,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 128 [2021-10-06 16:33:21,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464195372] [2021-10-06 16:33:21,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2021-10-06 16:33:21,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:33:21,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2021-10-06 16:33:21,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2021-10-06 16:33:21,700 INFO L87 Difference]: Start difference. First operand 1052 states and 2494 transitions. Second operand has 130 states, 129 states have (on average 1.0387596899224807) internal successors, (134), 129 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:33:28,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:33:28,098 INFO L93 Difference]: Finished difference Result 2082 states and 4939 transitions. [2021-10-06 16:33:28,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2021-10-06 16:33:28,098 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 129 states have (on average 1.0387596899224807) internal successors, (134), 129 states have internal predecessors, (134), 0 states have call successors, (0), 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 130 [2021-10-06 16:33:28,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:33:28,100 INFO L225 Difference]: With dead ends: 2082 [2021-10-06 16:33:28,101 INFO L226 Difference]: Without dead ends: 1568 [2021-10-06 16:33:28,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 6555.8ms TimeCoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2021-10-06 16:33:28,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2021-10-06 16:33:28,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1060. [2021-10-06 16:33:28,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1057 states have (on average 2.377483443708609) internal successors, (2513), 1059 states have internal predecessors, (2513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:33:28,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 2513 transitions. [2021-10-06 16:33:28,114 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 2513 transitions. Word has length 130 [2021-10-06 16:33:28,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:33:28,114 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 2513 transitions. [2021-10-06 16:33:28,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 129 states have (on average 1.0387596899224807) internal successors, (134), 129 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:33:28,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 2513 transitions. [2021-10-06 16:33:28,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-10-06 16:33:28,116 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:33:28,116 INFO L512 BasicCegarLoop]: trace histogram [127, 1, 1, 1, 1] [2021-10-06 16:33:28,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2021-10-06 16:33:28,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2021-10-06 16:33:28,317 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:33:28,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:33:28,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1547345177, now seen corresponding path program 127 times [2021-10-06 16:33:28,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:33:28,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615684390] [2021-10-06 16:33:28,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:33:28,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:33:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:33:35,093 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:33:35,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:33:35,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615684390] [2021-10-06 16:33:35,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615684390] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:33:35,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490423893] [2021-10-06 16:33:35,094 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 16:33:35,094 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:33:35,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:33:35,095 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:33:35,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2021-10-06 16:33:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:33:37,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 1200 conjuncts, 130 conjunts are in the unsatisfiable core [2021-10-06 16:33:37,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:33:37,928 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:33:37,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490423893] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:33:37,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:33:37,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 129 [2021-10-06 16:33:37,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819865502] [2021-10-06 16:33:37,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2021-10-06 16:33:37,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:33:37,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2021-10-06 16:33:37,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2021-10-06 16:33:37,933 INFO L87 Difference]: Start difference. First operand 1060 states and 2513 transitions. Second operand has 131 states, 130 states have (on average 1.0384615384615385) internal successors, (135), 130 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:33:44,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:33:44,454 INFO L93 Difference]: Finished difference Result 2098 states and 4977 transitions. [2021-10-06 16:33:44,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-10-06 16:33:44,455 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 130 states have (on average 1.0384615384615385) internal successors, (135), 130 states have internal predecessors, (135), 0 states have call successors, (0), 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 131 [2021-10-06 16:33:44,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:33:44,457 INFO L225 Difference]: With dead ends: 2098 [2021-10-06 16:33:44,457 INFO L226 Difference]: Without dead ends: 1580 [2021-10-06 16:33:44,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 6499.9ms TimeCoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2021-10-06 16:33:44,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2021-10-06 16:33:44,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1068. [2021-10-06 16:33:44,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1065 states have (on average 2.3774647887323943) internal successors, (2532), 1067 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:33:44,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 2532 transitions. [2021-10-06 16:33:44,474 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 2532 transitions. Word has length 131 [2021-10-06 16:33:44,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:33:44,474 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 2532 transitions. [2021-10-06 16:33:44,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 130 states have (on average 1.0384615384615385) internal successors, (135), 130 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:33:44,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 2532 transitions. [2021-10-06 16:33:44,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-10-06 16:33:44,476 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:33:44,476 INFO L512 BasicCegarLoop]: trace histogram [128, 1, 1, 1, 1] [2021-10-06 16:33:44,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Forceful destruction successful, exit code 0 [2021-10-06 16:33:44,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,132 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:33:44,677 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:33:44,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:33:44,678 INFO L82 PathProgramCache]: Analyzing trace with hash -723058116, now seen corresponding path program 128 times [2021-10-06 16:33:44,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:33:44,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639033721] [2021-10-06 16:33:44,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:33:44,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:33:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:33:51,529 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 0 proven. 8256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:33:51,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:33:51,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639033721] [2021-10-06 16:33:51,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639033721] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:33:51,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955469006] [2021-10-06 16:33:51,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:33:51,530 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:33:51,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:33:51,531 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:33:51,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2021-10-06 16:33:54,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:33:54,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:33:54,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 1209 conjuncts, 131 conjunts are in the unsatisfiable core [2021-10-06 16:33:54,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:33:54,387 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 0 proven. 8256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:33:54,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955469006] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:33:54,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:33:54,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 130 [2021-10-06 16:33:54,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048777595] [2021-10-06 16:33:54,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2021-10-06 16:33:54,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:33:54,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2021-10-06 16:33:54,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2021-10-06 16:33:54,392 INFO L87 Difference]: Start difference. First operand 1068 states and 2532 transitions. Second operand has 132 states, 131 states have (on average 1.0381679389312977) internal successors, (136), 131 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:34:01,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:34:01,131 INFO L93 Difference]: Finished difference Result 2114 states and 5015 transitions. [2021-10-06 16:34:01,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2021-10-06 16:34:01,132 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 131 states have (on average 1.0381679389312977) internal successors, (136), 131 states have internal predecessors, (136), 0 states have call successors, (0), 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 132 [2021-10-06 16:34:01,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:34:01,134 INFO L225 Difference]: With dead ends: 2114 [2021-10-06 16:34:01,135 INFO L226 Difference]: Without dead ends: 1592 [2021-10-06 16:34:01,135 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 6577.8ms TimeCoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2021-10-06 16:34:01,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2021-10-06 16:34:01,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1076. [2021-10-06 16:34:01,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 1073 states have (on average 2.3774464119291707) internal successors, (2551), 1075 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:34:01,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 2551 transitions. [2021-10-06 16:34:01,148 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 2551 transitions. Word has length 132 [2021-10-06 16:34:01,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:34:01,149 INFO L470 AbstractCegarLoop]: Abstraction has 1076 states and 2551 transitions. [2021-10-06 16:34:01,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 131 states have (on average 1.0381679389312977) internal successors, (136), 131 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:34:01,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 2551 transitions. [2021-10-06 16:34:01,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-10-06 16:34:01,150 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:34:01,150 INFO L512 BasicCegarLoop]: trace histogram [129, 1, 1, 1, 1] [2021-10-06 16:34:01,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Forceful destruction successful, exit code 0 [2021-10-06 16:34:01,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2021-10-06 16:34:01,351 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:34:01,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:34:01,351 INFO L82 PathProgramCache]: Analyzing trace with hash -939963001, now seen corresponding path program 129 times [2021-10-06 16:34:01,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:34:01,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929934331] [2021-10-06 16:34:01,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:34:01,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:34:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:34:08,316 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:34:08,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:34:08,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929934331] [2021-10-06 16:34:08,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929934331] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:34:08,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185661456] [2021-10-06 16:34:08,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:34:08,317 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:34:08,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:34:08,318 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:34:08,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2021-10-06 16:34:11,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2021-10-06 16:34:11,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:34:11,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 1218 conjuncts, 132 conjunts are in the unsatisfiable core [2021-10-06 16:34:11,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:34:11,385 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:34:11,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185661456] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:34:11,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:34:11,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130] total 131 [2021-10-06 16:34:11,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173673237] [2021-10-06 16:34:11,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2021-10-06 16:34:11,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:34:11,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2021-10-06 16:34:11,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2021-10-06 16:34:11,389 INFO L87 Difference]: Start difference. First operand 1076 states and 2551 transitions. Second operand has 133 states, 132 states have (on average 1.0378787878787878) internal successors, (137), 132 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:34:18,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:34:18,328 INFO L93 Difference]: Finished difference Result 2130 states and 5053 transitions. [2021-10-06 16:34:18,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2021-10-06 16:34:18,329 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 132 states have (on average 1.0378787878787878) internal successors, (137), 132 states have internal predecessors, (137), 0 states have call successors, (0), 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 133 [2021-10-06 16:34:18,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:34:18,331 INFO L225 Difference]: With dead ends: 2130 [2021-10-06 16:34:18,331 INFO L226 Difference]: Without dead ends: 1604 [2021-10-06 16:34:18,332 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 6638.4ms TimeCoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2021-10-06 16:34:18,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2021-10-06 16:34:18,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1084. [2021-10-06 16:34:18,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 1081 states have (on average 2.377428307123034) internal successors, (2570), 1083 states have internal predecessors, (2570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:34:18,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 2570 transitions. [2021-10-06 16:34:18,345 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 2570 transitions. Word has length 133 [2021-10-06 16:34:18,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:34:18,345 INFO L470 AbstractCegarLoop]: Abstraction has 1084 states and 2570 transitions. [2021-10-06 16:34:18,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 132 states have (on average 1.0378787878787878) internal successors, (137), 132 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:34:18,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 2570 transitions. [2021-10-06 16:34:18,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-10-06 16:34:18,347 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:34:18,347 INFO L512 BasicCegarLoop]: trace histogram [130, 1, 1, 1, 1] [2021-10-06 16:34:18,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Forceful destruction successful, exit code 0 [2021-10-06 16:34:18,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2021-10-06 16:34:18,547 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:34:18,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:34:18,548 INFO L82 PathProgramCache]: Analyzing trace with hash 925920156, now seen corresponding path program 130 times [2021-10-06 16:34:18,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:34:18,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824258355] [2021-10-06 16:34:18,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:34:18,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:34:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:34:25,598 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 0 proven. 8515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:34:25,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:34:25,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824258355] [2021-10-06 16:34:25,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824258355] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:34:25,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422744884] [2021-10-06 16:34:25,599 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:34:25,599 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:34:25,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:34:25,600 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:34:25,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2021-10-06 16:34:28,198 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:34:28,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:34:28,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 1227 conjuncts, 133 conjunts are in the unsatisfiable core [2021-10-06 16:34:28,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:34:28,527 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 0 proven. 8515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:34:28,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422744884] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:34:28,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:34:28,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 131] total 132 [2021-10-06 16:34:28,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415930233] [2021-10-06 16:34:28,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2021-10-06 16:34:28,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:34:28,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2021-10-06 16:34:28,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2021-10-06 16:34:28,532 INFO L87 Difference]: Start difference. First operand 1084 states and 2570 transitions. Second operand has 134 states, 133 states have (on average 1.037593984962406) internal successors, (138), 133 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:34:35,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:34:35,297 INFO L93 Difference]: Finished difference Result 2146 states and 5091 transitions. [2021-10-06 16:34:35,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2021-10-06 16:34:35,297 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 133 states have (on average 1.037593984962406) internal successors, (138), 133 states have internal predecessors, (138), 0 states have call successors, (0), 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 134 [2021-10-06 16:34:35,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:34:35,300 INFO L225 Difference]: With dead ends: 2146 [2021-10-06 16:34:35,300 INFO L226 Difference]: Without dead ends: 1616 [2021-10-06 16:34:35,301 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 6771.7ms TimeCoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2021-10-06 16:34:35,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2021-10-06 16:34:35,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1092. [2021-10-06 16:34:35,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 1089 states have (on average 2.3774104683195594) internal successors, (2589), 1091 states have internal predecessors, (2589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:34:35,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 2589 transitions. [2021-10-06 16:34:35,315 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 2589 transitions. Word has length 134 [2021-10-06 16:34:35,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:34:35,315 INFO L470 AbstractCegarLoop]: Abstraction has 1092 states and 2589 transitions. [2021-10-06 16:34:35,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 133 states have (on average 1.037593984962406) internal successors, (138), 133 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:34:35,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 2589 transitions. [2021-10-06 16:34:35,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-10-06 16:34:35,316 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:34:35,317 INFO L512 BasicCegarLoop]: trace histogram [131, 1, 1, 1, 1] [2021-10-06 16:34:35,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Ended with exit code 0 [2021-10-06 16:34:35,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,135 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:34:35,517 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-06 16:34:35,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:34:35,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1361244121, now seen corresponding path program 131 times [2021-10-06 16:34:35,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:34:35,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59438165] [2021-10-06 16:34:35,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:34:35,519 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:34:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2021-10-06 16:34:39,896 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:34:39,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-10-06 16:34:39,897 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 136 with TraceHistMax 131,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 104 known predicates. [2021-10-06 16:34:39,898 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:34:39,898 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:34:39,898 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:34:39,898 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:34:39,898 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:34:39,899 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:34:39,899 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:34:39,899 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:34:39,899 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:34:39,899 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:34:39,899 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 16:34:39,899 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 16:34:39,899 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:34:39,899 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:34:39,899 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:34:39,899 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:34:39,900 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:34:39,900 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:34:39,900 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:34:39,906 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 16:34:39,906 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 16:34:39,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 04:34:39 BasicIcfg [2021-10-06 16:34:39,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 16:34:39,908 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.witnessprinter [2021-10-06 16:34:39,909 INFO L168 Benchmark]: Toolchain (without parser) took 744658.13 ms. Allocated memory was 152.0 MB in the beginning and 2.0 GB in the end (delta: 1.9 GB). Free memory was 126.0 MB in the beginning and 233.1 MB in the end (delta: -107.1 MB). Peak memory consumption was 1.8 GB. Max. memory is 8.0 GB. [2021-10-06 16:34:39,910 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 16:34:39,910 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.56 ms. Allocated memory is still 152.0 MB. Free memory was 125.8 MB in the beginning and 115.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-10-06 16:34:39,910 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.13 ms. Allocated memory is still 152.0 MB. Free memory was 115.7 MB in the beginning and 114.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 16:34:39,911 INFO L168 Benchmark]: Boogie Preprocessor took 29.71 ms. Allocated memory is still 152.0 MB. Free memory was 114.3 MB in the beginning and 113.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 16:34:39,911 INFO L168 Benchmark]: RCFGBuilder took 710.11 ms. Allocated memory is still 152.0 MB. Free memory was 113.0 MB in the beginning and 132.5 MB in the end (delta: -19.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 8.0 GB. [2021-10-06 16:34:39,912 INFO L168 Benchmark]: TraceAbstraction took 743622.13 ms. Allocated memory was 152.0 MB in the beginning and 2.0 GB in the end (delta: 1.9 GB). Free memory was 132.0 MB in the beginning and 233.1 MB in the end (delta: -101.2 MB). Peak memory consumption was 1.8 GB. Max. memory is 8.0 GB. [2021-10-06 16:34:39,914 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 242.56 ms. Allocated memory is still 152.0 MB. Free memory was 125.8 MB in the beginning and 115.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 41.13 ms. Allocated memory is still 152.0 MB. Free memory was 115.7 MB in the beginning and 114.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.71 ms. Allocated memory is still 152.0 MB. Free memory was 114.3 MB in the beginning and 113.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 710.11 ms. Allocated memory is still 152.0 MB. Free memory was 113.0 MB in the beginning and 132.5 MB in the end (delta: -19.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 743622.13 ms. Allocated memory was 152.0 MB in the beginning and 2.0 GB in the end (delta: 1.9 GB). Free memory was 132.0 MB in the beginning and 233.1 MB in the end (delta: -101.2 MB). Peak memory consumption was 1.8 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3505.8ms, 87 PlacesBefore, 32 PlacesAfterwards, 86 TransitionsBefore, 27 TransitionsAfterwards, 690 CoEnabledTransitionPairs, 6 FixpointIterations, 43 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 83 TotalNumberOfCompositions, 922 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 897, positive: 893, positive conditional: 0, positive unconditional: 893, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 389, positive: 387, positive conditional: 0, positive unconditional: 387, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 389, positive: 385, positive conditional: 0, positive unconditional: 385, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 12, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 897, positive: 506, positive conditional: 0, positive unconditional: 506, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 389, unknown conditional: 0, unknown unconditional: 389] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 136 with TraceHistMax 131,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 104 known predicates. - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 136 with TraceHistMax 131,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 104 known predicates. - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 136 with TraceHistMax 131,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 104 known predicates. - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 136 with TraceHistMax 131,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 104 known predicates. - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 136 with TraceHistMax 131,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 104 known predicates. - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 136 with TraceHistMax 131,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 104 known predicates. - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 136 with TraceHistMax 131,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 104 known predicates. - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 136 with TraceHistMax 131,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 104 known predicates. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 136 with TraceHistMax 131,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 104 known predicates. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 136 with TraceHistMax 131,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 104 known predicates. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 136 with TraceHistMax 131,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 104 known predicates. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 136 with TraceHistMax 131,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 104 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 106 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 743491.9ms, OverallIterations: 142, TraceHistogramMax: 131, EmptinessCheckTime: 169.2ms, AutomataDifference: 231609.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3574.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 27357 SDtfs, 194993 SDslu, 154781 SDs, 0 SdLazy, 19219 SolverSat, 34561 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 25543.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17599 GetRequests, 8801 SyntacticMatches, 0 SemanticMatches, 8798 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16780 ImplicationChecksByTransitivity, 301045.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1092occurred in iteration=141, InterpolantAutomatonStates: 9072, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1563.4ms AutomataMinimizationTime, 141 MinimizatonAttempts, 35812 StatesRemovedByMinimization, 136 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2428.9ms SsaConstructionTime, 17819.9ms SatisfiabilityAnalysisTime, 339070.2ms InterpolantComputationTime, 18180 NumberOfCodeBlocks, 18178 NumberOfCodeBlocksAsserted, 2442 NumberOfCheckSat, 17905 ConstructedInterpolants, 0 QuantifiedInterpolants, 53911 SizeOfPredicates, 1 NumberOfNonLiveVariables, 84346 ConjunctsInSsa, 8922 ConjunctsInUnsatCore, 275 InterpolantComputations, 9 PerfectInterpolantSequences, 6/749334 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown