/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-queue-add-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 15:08:25,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 15:08:25,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 15:08:25,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 15:08:25,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-07 15:08:25,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-07 15:08:25,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-07 15:08:25,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-07 15:08:25,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-07 15:08:25,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-07 15:08:25,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-07 15:08:25,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-07 15:08:25,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-07 15:08:25,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-07 15:08:25,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-07 15:08:25,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-07 15:08:25,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-07 15:08:25,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 15:08:25,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 15:08:25,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 15:08:25,326 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-07 15:08:25,388 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 15:08:25,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 15:08:25,390 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 15:08:25,390 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 15:08:25,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 15:08:25,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 15:08:25,396 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 15:08:25,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 15:08:25,397 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 15:08:25,397 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 15:08:25,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 15:08:25,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 15:08:25,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 15:08:25,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-07 15:08:25,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 15:08:25,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-07 15:08:25,400 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-07 15:08:25,400 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 15:08:25,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-07 15:08:25,400 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 15:08:25,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-07 15:08:25,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 15:08:25,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 15:08:25,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 15:08:25,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:08:25,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 15:08:25,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 15:08:25,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-07 15:08:25,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-07 15:08:25,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-07 15:08:25,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-07 15:08:25,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 15:08:25,404 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 15:08:25,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 15:08:25,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 15:08:25,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 15:08:25,873 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 15:08:25,874 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 15:08:25,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c [2021-10-07 15:08:25,959 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dda6d5b19/2b59d513be43486ca261eb435bed3e8a/FLAG8ff381c9d [2021-10-07 15:08:26,733 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 15:08:26,734 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c [2021-10-07 15:08:26,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dda6d5b19/2b59d513be43486ca261eb435bed3e8a/FLAG8ff381c9d [2021-10-07 15:08:27,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dda6d5b19/2b59d513be43486ca261eb435bed3e8a [2021-10-07 15:08:27,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 15:08:27,085 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-07 15:08:27,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 15:08:27,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 15:08:27,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 15:08:27,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:08:27" (1/1) ... [2021-10-07 15:08:27,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1efed750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:27, skipping insertion in model container [2021-10-07 15:08:27,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:08:27" (1/1) ... [2021-10-07 15:08:27,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 15:08:27,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:08:27,329 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-queue-add-3.wvr.c[3405,3418] [2021-10-07 15:08:27,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:08:27,347 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 15:08:27,384 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-queue-add-3.wvr.c[3405,3418] [2021-10-07 15:08:27,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:08:27,420 INFO L208 MainTranslator]: Completed translation [2021-10-07 15:08:27,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:27 WrapperNode [2021-10-07 15:08:27,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 15:08:27,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 15:08:27,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 15:08:27,424 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 15:08:27,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:27" (1/1) ... [2021-10-07 15:08:27,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:27" (1/1) ... [2021-10-07 15:08:27,532 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 15:08:27,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 15:08:27,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 15:08:27,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 15:08:27,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:27" (1/1) ... [2021-10-07 15:08:27,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:27" (1/1) ... [2021-10-07 15:08:27,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:27" (1/1) ... [2021-10-07 15:08:27,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:27" (1/1) ... [2021-10-07 15:08:27,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:27" (1/1) ... [2021-10-07 15:08:27,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:27" (1/1) ... [2021-10-07 15:08:27,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:27" (1/1) ... [2021-10-07 15:08:27,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 15:08:27,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 15:08:27,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 15:08:27,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 15:08:27,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:27" (1/1) ... [2021-10-07 15:08:27,599 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:08:27,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:27,661 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 15:08:27,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 15:08:27,745 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 15:08:27,746 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 15:08:27,746 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 15:08:27,746 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 15:08:27,747 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-07 15:08:27,748 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-07 15:08:27,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-07 15:08:27,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 15:08:27,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-07 15:08:27,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 15:08:27,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 15:08:27,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-07 15:08:27,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 15:08:27,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 15:08:27,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-07 15:08:27,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 15:08:27,753 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 15:08:28,989 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 15:08:28,989 INFO L299 CfgBuilder]: Removed 41 assume(true) statements. [2021-10-07 15:08:28,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:08:28 BoogieIcfgContainer [2021-10-07 15:08:28,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 15:08:28,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 15:08:28,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 15:08:29,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 15:08:29,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:08:27" (1/3) ... [2021-10-07 15:08:29,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca8479f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:08:29, skipping insertion in model container [2021-10-07 15:08:29,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:27" (2/3) ... [2021-10-07 15:08:29,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca8479f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:08:29, skipping insertion in model container [2021-10-07 15:08:29,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:08:28" (3/3) ... [2021-10-07 15:08:29,006 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-3.wvr.c [2021-10-07 15:08:29,012 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-07 15:08:29,012 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 15:08:29,012 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-10-07 15:08:29,012 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 15:08:29,059 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,060 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,060 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,061 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,061 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,061 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,061 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,061 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,062 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,062 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,062 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,062 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,062 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,063 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,063 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,063 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,063 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,063 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,064 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,064 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,064 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,064 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,064 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,064 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,065 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,065 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,065 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,065 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,065 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,066 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,066 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,066 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,066 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,066 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,067 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,067 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,067 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,067 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,067 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,068 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,068 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,068 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,068 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,068 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,068 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,069 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,069 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,069 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,069 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,069 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,070 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,070 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,070 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,070 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,070 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,070 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,071 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,071 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,071 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,071 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,071 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,071 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,072 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,072 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,072 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,072 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,073 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,073 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,073 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,073 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,073 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,074 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,074 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,074 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,074 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,074 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,075 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,076 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,076 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,076 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,076 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,076 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,077 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,077 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,077 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,077 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,077 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,078 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,078 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,078 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,078 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,078 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,078 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,079 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,079 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,079 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,079 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,079 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,079 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,080 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,080 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,080 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,080 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,080 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,080 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,081 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,081 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,081 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,081 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,081 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,081 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,082 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,082 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,082 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,082 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,082 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,083 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,083 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,083 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,083 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,083 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,084 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,084 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,084 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,084 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,084 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,085 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,085 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,085 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,085 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,085 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,085 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,086 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,086 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,086 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,086 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,086 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,086 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,087 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,087 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,087 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,087 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,087 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,088 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,088 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,088 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,088 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,089 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,089 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,089 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,089 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,089 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,090 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,090 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,091 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,091 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,091 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,091 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,091 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,092 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,092 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,092 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,092 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,092 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,092 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,093 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,093 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,093 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,093 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,093 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,094 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,094 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,094 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,094 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,094 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,094 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,095 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,095 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,095 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,095 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,095 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,095 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,096 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,096 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,096 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,096 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,096 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,097 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,097 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,097 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,097 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,097 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,098 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,098 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,098 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,098 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,099 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,099 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,099 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,099 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,099 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,100 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,100 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,100 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,103 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,104 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,104 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,104 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,104 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,105 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,105 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,105 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,105 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,107 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,108 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,108 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,108 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,108 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,109 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,109 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,111 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,111 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,111 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,112 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,112 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,112 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,112 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,112 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,113 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,113 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:29,121 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-07 15:08:29,174 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 15:08:29,190 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 15:08:29,190 INFO L340 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2021-10-07 15:08:29,224 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 15:08:29,237 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 212 places, 220 transitions, 464 flow [2021-10-07 15:08:29,240 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 212 places, 220 transitions, 464 flow [2021-10-07 15:08:29,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 212 places, 220 transitions, 464 flow [2021-10-07 15:08:29,381 INFO L129 PetriNetUnfolder]: 18/217 cut-off events. [2021-10-07 15:08:29,382 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-07 15:08:29,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 217 events. 18/217 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 228 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 177. Up to 3 conditions per place. [2021-10-07 15:08:29,407 INFO L116 LiptonReduction]: Number of co-enabled transitions 3252 [2021-10-07 15:08:40,185 INFO L131 LiptonReduction]: Checked pairs total: 5796 [2021-10-07 15:08:40,187 INFO L133 LiptonReduction]: Total number of compositions: 232 [2021-10-07 15:08:40,202 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 51 transitions, 126 flow [2021-10-07 15:08:40,298 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1614 states, 1366 states have (on average 4.085651537335285) internal successors, (5581), 1613 states have internal predecessors, (5581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:40,306 INFO L276 IsEmpty]: Start isEmpty. Operand has 1614 states, 1366 states have (on average 4.085651537335285) internal successors, (5581), 1613 states have internal predecessors, (5581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:40,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 15:08:40,313 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:40,314 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 15:08:40,315 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:08:40,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:40,321 INFO L82 PathProgramCache]: Analyzing trace with hash 33296, now seen corresponding path program 1 times [2021-10-07 15:08:40,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:40,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181768495] [2021-10-07 15:08:40,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:40,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:40,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:40,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:40,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181768495] [2021-10-07 15:08:40,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181768495] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:40,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:08:40,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 15:08:40,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5973515] [2021-10-07 15:08:40,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:08:40,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:40,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:08:40,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:08:40,585 INFO L87 Difference]: Start difference. First operand has 1614 states, 1366 states have (on average 4.085651537335285) internal successors, (5581), 1613 states have internal predecessors, (5581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:40,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:40,703 INFO L93 Difference]: Finished difference Result 1811 states and 6037 transitions. [2021-10-07 15:08:40,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:08:40,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-07 15:08:40,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:40,758 INFO L225 Difference]: With dead ends: 1811 [2021-10-07 15:08:40,759 INFO L226 Difference]: Without dead ends: 1811 [2021-10-07 15:08:40,760 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:08:40,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2021-10-07 15:08:40,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 910. [2021-10-07 15:08:40,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 807 states have (on average 3.748451053283767) internal successors, (3025), 909 states have internal predecessors, (3025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:40,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 3025 transitions. [2021-10-07 15:08:40,919 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 3025 transitions. Word has length 2 [2021-10-07 15:08:40,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:40,920 INFO L470 AbstractCegarLoop]: Abstraction has 910 states and 3025 transitions. [2021-10-07 15:08:40,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:40,921 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 3025 transitions. [2021-10-07 15:08:40,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:08:40,921 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:40,921 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:08:40,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-07 15:08:40,922 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:08:40,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:40,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1033945, now seen corresponding path program 1 times [2021-10-07 15:08:40,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:40,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622528203] [2021-10-07 15:08:40,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:40,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:41,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:41,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:41,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622528203] [2021-10-07 15:08:41,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622528203] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:41,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053954859] [2021-10-07 15:08:41,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:41,069 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:41,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:41,079 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:41,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-07 15:08:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:41,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:08:41,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:41,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053954859] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:41,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:41,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-07 15:08:41,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322055924] [2021-10-07 15:08:41,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 15:08:41,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:41,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 15:08:41,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:08:41,249 INFO L87 Difference]: Start difference. First operand 910 states and 3025 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:41,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:41,353 INFO L93 Difference]: Finished difference Result 2714 states and 9055 transitions. [2021-10-07 15:08:41,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:08:41,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 15:08:41,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:41,394 INFO L225 Difference]: With dead ends: 2714 [2021-10-07 15:08:41,394 INFO L226 Difference]: Without dead ends: 2714 [2021-10-07 15:08:41,395 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:08:41,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2714 states. [2021-10-07 15:08:41,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2714 to 912. [2021-10-07 15:08:41,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 809 states have (on average 3.746600741656366) internal successors, (3031), 911 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:41,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 3031 transitions. [2021-10-07 15:08:41,505 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 3031 transitions. Word has length 3 [2021-10-07 15:08:41,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:41,506 INFO L470 AbstractCegarLoop]: Abstraction has 912 states and 3031 transitions. [2021-10-07 15:08:41,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:41,506 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 3031 transitions. [2021-10-07 15:08:41,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:08:41,507 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:41,507 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:08:41,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:41,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:41,723 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:08:41,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:41,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1033970, now seen corresponding path program 1 times [2021-10-07 15:08:41,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:41,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941934541] [2021-10-07 15:08:41,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:41,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:41,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:41,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:41,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941934541] [2021-10-07 15:08:41,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941934541] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:41,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906543980] [2021-10-07 15:08:41,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:41,832 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:41,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:41,834 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:41,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-07 15:08:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:41,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:08:41,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:41,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:41,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906543980] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:41,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:08:41,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2021-10-07 15:08:41,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275349827] [2021-10-07 15:08:41,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:08:41,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:41,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:08:41,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:08:41,928 INFO L87 Difference]: Start difference. First operand 912 states and 3031 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:41,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:41,998 INFO L93 Difference]: Finished difference Result 1811 states and 6039 transitions. [2021-10-07 15:08:41,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:08:41,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 15:08:41,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:42,018 INFO L225 Difference]: With dead ends: 1811 [2021-10-07 15:08:42,018 INFO L226 Difference]: Without dead ends: 1811 [2021-10-07 15:08:42,018 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:08:42,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2021-10-07 15:08:42,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 910. [2021-10-07 15:08:42,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 809 states have (on average 3.741656365883807) internal successors, (3027), 909 states have internal predecessors, (3027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:42,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 3027 transitions. [2021-10-07 15:08:42,077 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 3027 transitions. Word has length 3 [2021-10-07 15:08:42,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:42,078 INFO L470 AbstractCegarLoop]: Abstraction has 910 states and 3027 transitions. [2021-10-07 15:08:42,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:42,079 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 3027 transitions. [2021-10-07 15:08:42,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 15:08:42,079 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:42,080 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-07 15:08:42,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:42,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:42,295 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:08:42,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:42,295 INFO L82 PathProgramCache]: Analyzing trace with hash 32054064, now seen corresponding path program 2 times [2021-10-07 15:08:42,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:42,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006204401] [2021-10-07 15:08:42,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:42,297 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:42,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:42,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:42,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:42,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006204401] [2021-10-07 15:08:42,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006204401] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:42,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742930152] [2021-10-07 15:08:42,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:08:42,377 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:42,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:42,378 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:42,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-07 15:08:42,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:08:42,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:42,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:08:42,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:42,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:08:42,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742930152] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:42,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:08:42,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-07 15:08:42,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949162188] [2021-10-07 15:08:42,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:08:42,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:42,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:08:42,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:08:42,470 INFO L87 Difference]: Start difference. First operand 910 states and 3027 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:42,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:42,491 INFO L93 Difference]: Finished difference Result 909 states and 3026 transitions. [2021-10-07 15:08:42,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:08:42,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-07 15:08:42,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:42,501 INFO L225 Difference]: With dead ends: 909 [2021-10-07 15:08:42,501 INFO L226 Difference]: Without dead ends: 909 [2021-10-07 15:08:42,502 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 12.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:08:42,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2021-10-07 15:08:42,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 907. [2021-10-07 15:08:42,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 807 states have (on average 3.744733581164808) internal successors, (3022), 906 states have internal predecessors, (3022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:42,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 3022 transitions. [2021-10-07 15:08:42,573 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 3022 transitions. Word has length 4 [2021-10-07 15:08:42,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:42,573 INFO L470 AbstractCegarLoop]: Abstraction has 907 states and 3022 transitions. [2021-10-07 15:08:42,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:42,574 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 3022 transitions. [2021-10-07 15:08:42,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:08:42,574 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:42,574 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2021-10-07 15:08:42,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:42,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:42,790 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:08:42,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:42,791 INFO L82 PathProgramCache]: Analyzing trace with hash 994330200, now seen corresponding path program 1 times [2021-10-07 15:08:42,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:42,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415733526] [2021-10-07 15:08:42,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:42,793 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:42,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:42,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:42,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415733526] [2021-10-07 15:08:42,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415733526] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:42,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098737561] [2021-10-07 15:08:42,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:42,867 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:42,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:42,868 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:42,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-07 15:08:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:42,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:08:42,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:42,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:42,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098737561] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:42,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:42,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-07 15:08:42,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994492874] [2021-10-07 15:08:42,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:08:42,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:42,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:08:42,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:08:42,969 INFO L87 Difference]: Start difference. First operand 907 states and 3022 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:43,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:43,057 INFO L93 Difference]: Finished difference Result 3614 states and 12066 transitions. [2021-10-07 15:08:43,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:08:43,058 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:08:43,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:43,099 INFO L225 Difference]: With dead ends: 3614 [2021-10-07 15:08:43,099 INFO L226 Difference]: Without dead ends: 3614 [2021-10-07 15:08:43,100 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 17.8ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:08:43,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3614 states. [2021-10-07 15:08:43,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3614 to 908. [2021-10-07 15:08:43,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 808 states have (on average 3.742574257425743) internal successors, (3024), 907 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:43,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 3024 transitions. [2021-10-07 15:08:43,179 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 3024 transitions. Word has length 5 [2021-10-07 15:08:43,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:43,180 INFO L470 AbstractCegarLoop]: Abstraction has 908 states and 3024 transitions. [2021-10-07 15:08:43,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:43,180 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 3024 transitions. [2021-10-07 15:08:43,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 15:08:43,181 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:43,181 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2021-10-07 15:08:43,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:43,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:43,395 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:08:43,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:43,396 INFO L82 PathProgramCache]: Analyzing trace with hash 759466174, now seen corresponding path program 2 times [2021-10-07 15:08:43,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:43,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750471017] [2021-10-07 15:08:43,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:43,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:43,490 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:43,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:43,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750471017] [2021-10-07 15:08:43,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750471017] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:43,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497665691] [2021-10-07 15:08:43,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:08:43,492 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:43,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:43,496 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:43,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-07 15:08:43,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:08:43,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:43,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:08:43,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:43,594 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:08:43,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497665691] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:43,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:08:43,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2021-10-07 15:08:43,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625424582] [2021-10-07 15:08:43,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:08:43,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:43,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:08:43,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:08:43,599 INFO L87 Difference]: Start difference. First operand 908 states and 3024 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:43,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:43,661 INFO L93 Difference]: Finished difference Result 683 states and 2262 transitions. [2021-10-07 15:08:43,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:08:43,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-07 15:08:43,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:43,668 INFO L225 Difference]: With dead ends: 683 [2021-10-07 15:08:43,668 INFO L226 Difference]: Without dead ends: 683 [2021-10-07 15:08:43,669 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 23.5ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:08:43,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2021-10-07 15:08:43,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 680. [2021-10-07 15:08:43,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 621 states have (on average 3.632850241545894) internal successors, (2256), 679 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:43,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 2256 transitions. [2021-10-07 15:08:43,696 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 2256 transitions. Word has length 6 [2021-10-07 15:08:43,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:43,700 INFO L470 AbstractCegarLoop]: Abstraction has 680 states and 2256 transitions. [2021-10-07 15:08:43,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:43,701 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 2256 transitions. [2021-10-07 15:08:43,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 15:08:43,702 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:43,702 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 15:08:43,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:43,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:43,919 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:08:43,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:43,920 INFO L82 PathProgramCache]: Analyzing trace with hash 759852772, now seen corresponding path program 1 times [2021-10-07 15:08:43,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:43,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977367124] [2021-10-07 15:08:43,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:43,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:43,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:43,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:43,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977367124] [2021-10-07 15:08:43,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977367124] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:43,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:08:43,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 15:08:43,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527779716] [2021-10-07 15:08:43,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:08:43,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:43,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:08:43,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:08:43,974 INFO L87 Difference]: Start difference. First operand 680 states and 2256 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:44,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:44,075 INFO L93 Difference]: Finished difference Result 789 states and 2508 transitions. [2021-10-07 15:08:44,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:08:44,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-07 15:08:44,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:44,083 INFO L225 Difference]: With dead ends: 789 [2021-10-07 15:08:44,084 INFO L226 Difference]: Without dead ends: 773 [2021-10-07 15:08:44,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:08:44,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2021-10-07 15:08:44,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 727. [2021-10-07 15:08:44,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 666 states have (on average 3.548048048048048) internal successors, (2363), 726 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:44,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 2363 transitions. [2021-10-07 15:08:44,116 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 2363 transitions. Word has length 6 [2021-10-07 15:08:44,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:44,117 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 2363 transitions. [2021-10-07 15:08:44,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:44,117 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 2363 transitions. [2021-10-07 15:08:44,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:08:44,118 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:44,118 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:44,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-07 15:08:44,119 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:08:44,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:44,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1462249261, now seen corresponding path program 1 times [2021-10-07 15:08:44,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:44,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361232387] [2021-10-07 15:08:44,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:44,120 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:44,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:44,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:44,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361232387] [2021-10-07 15:08:44,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361232387] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:44,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216984426] [2021-10-07 15:08:44,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:44,177 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:44,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:44,179 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:44,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-07 15:08:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:44,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:08:44,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:44,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:08:44,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216984426] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:44,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:08:44,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-07 15:08:44,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436262452] [2021-10-07 15:08:44,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:08:44,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:44,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:08:44,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:08:44,272 INFO L87 Difference]: Start difference. First operand 727 states and 2363 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:44,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:44,294 INFO L93 Difference]: Finished difference Result 485 states and 1546 transitions. [2021-10-07 15:08:44,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:08:44,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 15:08:44,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:44,314 INFO L225 Difference]: With dead ends: 485 [2021-10-07 15:08:44,315 INFO L226 Difference]: Without dead ends: 485 [2021-10-07 15:08:44,315 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 12.9ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:08:44,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2021-10-07 15:08:44,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 485. [2021-10-07 15:08:44,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 457 states have (on average 3.3829321663019694) internal successors, (1546), 484 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:44,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 1546 transitions. [2021-10-07 15:08:44,336 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 1546 transitions. Word has length 7 [2021-10-07 15:08:44,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:44,337 INFO L470 AbstractCegarLoop]: Abstraction has 485 states and 1546 transitions. [2021-10-07 15:08:44,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:44,338 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 1546 transitions. [2021-10-07 15:08:44,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:08:44,339 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:44,339 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:44,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:44,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:44,555 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:08:44,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:44,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1462249280, now seen corresponding path program 1 times [2021-10-07 15:08:44,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:44,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609958607] [2021-10-07 15:08:44,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:44,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:44,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:08:44,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:44,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609958607] [2021-10-07 15:08:44,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609958607] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:44,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:08:44,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 15:08:44,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634315560] [2021-10-07 15:08:44,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:08:44,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:44,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:08:44,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:08:44,591 INFO L87 Difference]: Start difference. First operand 485 states and 1546 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:44,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:44,609 INFO L93 Difference]: Finished difference Result 697 states and 2229 transitions. [2021-10-07 15:08:44,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:08:44,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 15:08:44,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:44,615 INFO L225 Difference]: With dead ends: 697 [2021-10-07 15:08:44,615 INFO L226 Difference]: Without dead ends: 697 [2021-10-07 15:08:44,616 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:08:44,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2021-10-07 15:08:44,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 559. [2021-10-07 15:08:44,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 531 states have (on average 3.51789077212806) internal successors, (1868), 558 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:44,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1868 transitions. [2021-10-07 15:08:44,640 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1868 transitions. Word has length 7 [2021-10-07 15:08:44,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:44,641 INFO L470 AbstractCegarLoop]: Abstraction has 559 states and 1868 transitions. [2021-10-07 15:08:44,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:44,641 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1868 transitions. [2021-10-07 15:08:44,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 15:08:44,642 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:44,642 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:44,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-07 15:08:44,643 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:08:44,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:44,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1914909840, now seen corresponding path program 1 times [2021-10-07 15:08:44,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:44,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230332998] [2021-10-07 15:08:44,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:44,644 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:08:44,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:44,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230332998] [2021-10-07 15:08:44,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230332998] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:44,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704811690] [2021-10-07 15:08:44,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:44,690 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:44,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:44,691 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:44,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-07 15:08:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:44,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:08:44,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:44,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:08:44,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704811690] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:44,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:44,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-07 15:08:44,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090130420] [2021-10-07 15:08:44,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 15:08:44,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:44,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 15:08:44,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:08:44,798 INFO L87 Difference]: Start difference. First operand 559 states and 1868 transitions. Second operand has 5 states, 4 states have (on average 2.5) 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) [2021-10-07 15:08:44,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:44,829 INFO L93 Difference]: Finished difference Result 909 states and 2986 transitions. [2021-10-07 15:08:44,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:08:44,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) 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 8 [2021-10-07 15:08:44,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:44,849 INFO L225 Difference]: With dead ends: 909 [2021-10-07 15:08:44,850 INFO L226 Difference]: Without dead ends: 909 [2021-10-07 15:08:44,850 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.6ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:08:44,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2021-10-07 15:08:44,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 633. [2021-10-07 15:08:44,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 605 states have (on average 3.7421487603305783) internal successors, (2264), 632 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:44,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 2264 transitions. [2021-10-07 15:08:44,885 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 2264 transitions. Word has length 8 [2021-10-07 15:08:44,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:44,886 INFO L470 AbstractCegarLoop]: Abstraction has 633 states and 2264 transitions. [2021-10-07 15:08:44,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) 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) [2021-10-07 15:08:44,886 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 2264 transitions. [2021-10-07 15:08:44,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 15:08:44,888 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:44,888 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:44,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:45,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-07 15:08:45,103 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:08:45,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:45,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1914909804, now seen corresponding path program 1 times [2021-10-07 15:08:45,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:45,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632734947] [2021-10-07 15:08:45,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:45,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:45,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:45,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:45,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:45,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632734947] [2021-10-07 15:08:45,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632734947] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:45,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650721242] [2021-10-07 15:08:45,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:45,160 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:45,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:45,161 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:45,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-07 15:08:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:45,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:08:45,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:45,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:45,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650721242] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:45,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:45,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-07 15:08:45,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665555339] [2021-10-07 15:08:45,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 15:08:45,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:45,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 15:08:45,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:08:45,326 INFO L87 Difference]: Start difference. First operand 633 states and 2264 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) [2021-10-07 15:08:45,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:45,486 INFO L93 Difference]: Finished difference Result 1112 states and 3564 transitions. [2021-10-07 15:08:45,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:08:45,487 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 8 [2021-10-07 15:08:45,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:45,501 INFO L225 Difference]: With dead ends: 1112 [2021-10-07 15:08:45,501 INFO L226 Difference]: Without dead ends: 1106 [2021-10-07 15:08:45,501 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 64.8ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:08:45,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2021-10-07 15:08:45,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 818. [2021-10-07 15:08:45,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 782 states have (on average 3.626598465473146) internal successors, (2836), 817 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:45,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 2836 transitions. [2021-10-07 15:08:45,554 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 2836 transitions. Word has length 8 [2021-10-07 15:08:45,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:45,554 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 2836 transitions. [2021-10-07 15:08:45,554 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) [2021-10-07 15:08:45,555 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 2836 transitions. [2021-10-07 15:08:45,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 15:08:45,556 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:45,556 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:45,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:45,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-07 15:08:45,772 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:08:45,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:45,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1221749347, now seen corresponding path program 2 times [2021-10-07 15:08:45,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:45,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901246975] [2021-10-07 15:08:45,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:45,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:45,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:08:45,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:45,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901246975] [2021-10-07 15:08:45,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901246975] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:45,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265905172] [2021-10-07 15:08:45,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:08:45,817 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:45,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:45,818 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:45,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-07 15:08:45,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:08:45,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:45,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:08:45,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:45,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:08:45,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265905172] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:45,948 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:08:45,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2021-10-07 15:08:45,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33785572] [2021-10-07 15:08:45,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:08:45,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:45,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:08:45,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:08:45,950 INFO L87 Difference]: Start difference. First operand 818 states and 2836 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:45,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:45,974 INFO L93 Difference]: Finished difference Result 940 states and 3013 transitions. [2021-10-07 15:08:45,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:08:45,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-07 15:08:45,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:45,981 INFO L225 Difference]: With dead ends: 940 [2021-10-07 15:08:45,981 INFO L226 Difference]: Without dead ends: 940 [2021-10-07 15:08:45,982 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:08:45,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2021-10-07 15:08:46,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 744. [2021-10-07 15:08:46,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 717 states have (on average 3.503486750348675) internal successors, (2512), 743 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:46,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 2512 transitions. [2021-10-07 15:08:46,022 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 2512 transitions. Word has length 9 [2021-10-07 15:08:46,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:46,023 INFO L470 AbstractCegarLoop]: Abstraction has 744 states and 2512 transitions. [2021-10-07 15:08:46,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:46,023 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 2512 transitions. [2021-10-07 15:08:46,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 15:08:46,024 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:46,024 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:46,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:46,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:46,239 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:08:46,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:46,240 INFO L82 PathProgramCache]: Analyzing trace with hash 526573509, now seen corresponding path program 1 times [2021-10-07 15:08:46,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:46,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374438368] [2021-10-07 15:08:46,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:46,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:46,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:46,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:46,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374438368] [2021-10-07 15:08:46,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374438368] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:46,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:08:46,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 15:08:46,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220581820] [2021-10-07 15:08:46,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:08:46,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:46,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:08:46,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:08:46,305 INFO L87 Difference]: Start difference. First operand 744 states and 2512 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:46,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:46,334 INFO L93 Difference]: Finished difference Result 754 states and 2631 transitions. [2021-10-07 15:08:46,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:08:46,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 15:08:46,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:46,339 INFO L225 Difference]: With dead ends: 754 [2021-10-07 15:08:46,340 INFO L226 Difference]: Without dead ends: 724 [2021-10-07 15:08:46,340 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:08:46,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-10-07 15:08:46,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 724. [2021-10-07 15:08:46,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 699 states have (on average 3.680972818311874) internal successors, (2573), 723 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:46,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 2573 transitions. [2021-10-07 15:08:46,370 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 2573 transitions. Word has length 10 [2021-10-07 15:08:46,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:46,370 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 2573 transitions. [2021-10-07 15:08:46,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:46,370 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 2573 transitions. [2021-10-07 15:08:46,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 15:08:46,371 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:46,371 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:46,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-07 15:08:46,372 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:08:46,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:46,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1771209386, now seen corresponding path program 1 times [2021-10-07 15:08:46,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:46,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295071575] [2021-10-07 15:08:46,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:46,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:46,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:08:46,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:46,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295071575] [2021-10-07 15:08:46,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295071575] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:46,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:08:46,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-07 15:08:46,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003881693] [2021-10-07 15:08:46,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:08:46,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:46,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:08:46,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:08:46,415 INFO L87 Difference]: Start difference. First operand 724 states and 2573 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:46,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:46,466 INFO L93 Difference]: Finished difference Result 914 states and 3095 transitions. [2021-10-07 15:08:46,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:08:46,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 15:08:46,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:46,471 INFO L225 Difference]: With dead ends: 914 [2021-10-07 15:08:46,471 INFO L226 Difference]: Without dead ends: 827 [2021-10-07 15:08:46,472 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:08:46,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2021-10-07 15:08:46,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 827. [2021-10-07 15:08:46,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 801 states have (on average 3.5418227215980025) internal successors, (2837), 826 states have internal predecessors, (2837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:46,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 2837 transitions. [2021-10-07 15:08:46,504 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 2837 transitions. Word has length 10 [2021-10-07 15:08:46,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:46,504 INFO L470 AbstractCegarLoop]: Abstraction has 827 states and 2837 transitions. [2021-10-07 15:08:46,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:46,504 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 2837 transitions. [2021-10-07 15:08:46,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 15:08:46,505 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:46,505 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:46,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-07 15:08:46,506 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:08:46,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:46,506 INFO L82 PathProgramCache]: Analyzing trace with hash 780477527, now seen corresponding path program 2 times [2021-10-07 15:08:46,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:46,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229503984] [2021-10-07 15:08:46,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:46,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:46,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:08:46,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:46,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229503984] [2021-10-07 15:08:46,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229503984] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:46,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142789714] [2021-10-07 15:08:46,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:08:46,548 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:46,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:46,549 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:46,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-07 15:08:46,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:08:46,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:46,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:08:46,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:46,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:08:46,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142789714] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:46,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:08:46,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2021-10-07 15:08:46,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031254795] [2021-10-07 15:08:46,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:08:46,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:46,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:08:46,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:08:46,675 INFO L87 Difference]: Start difference. First operand 827 states and 2837 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:46,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:46,687 INFO L93 Difference]: Finished difference Result 727 states and 2504 transitions. [2021-10-07 15:08:46,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:08:46,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 10 [2021-10-07 15:08:46,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:46,691 INFO L225 Difference]: With dead ends: 727 [2021-10-07 15:08:46,691 INFO L226 Difference]: Without dead ends: 638 [2021-10-07 15:08:46,691 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.2ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:08:46,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-10-07 15:08:46,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 482. [2021-10-07 15:08:46,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 466 states have (on average 3.351931330472103) internal successors, (1562), 481 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:46,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 1562 transitions. [2021-10-07 15:08:46,711 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 1562 transitions. Word has length 10 [2021-10-07 15:08:46,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:46,711 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 1562 transitions. [2021-10-07 15:08:46,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:46,711 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 1562 transitions. [2021-10-07 15:08:46,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 15:08:46,712 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:46,712 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:46,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-10-07 15:08:46,926 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 [2021-10-07 15:08:46,927 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:08:46,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:46,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1201148270, now seen corresponding path program 1 times [2021-10-07 15:08:46,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:46,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617449119] [2021-10-07 15:08:46,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:46,929 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:47,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:08:47,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:47,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617449119] [2021-10-07 15:08:47,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617449119] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:47,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:08:47,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 15:08:47,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456321898] [2021-10-07 15:08:47,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:08:47,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:47,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:08:47,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:08:47,048 INFO L87 Difference]: Start difference. First operand 482 states and 1562 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:47,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:47,059 INFO L93 Difference]: Finished difference Result 368 states and 1124 transitions. [2021-10-07 15:08:47,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:08:47,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 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 11 [2021-10-07 15:08:47,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:47,068 INFO L225 Difference]: With dead ends: 368 [2021-10-07 15:08:47,068 INFO L226 Difference]: Without dead ends: 368 [2021-10-07 15:08:47,069 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:08:47,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-10-07 15:08:47,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2021-10-07 15:08:47,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 352 states have (on average 3.1931818181818183) internal successors, (1124), 367 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:47,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 1124 transitions. [2021-10-07 15:08:47,081 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 1124 transitions. Word has length 11 [2021-10-07 15:08:47,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:47,082 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 1124 transitions. [2021-10-07 15:08:47,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:47,082 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 1124 transitions. [2021-10-07 15:08:47,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:08:47,083 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:47,083 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:47,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-07 15:08:47,083 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:08:47,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:47,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1048989550, now seen corresponding path program 1 times [2021-10-07 15:08:47,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:47,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804904266] [2021-10-07 15:08:47,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:47,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:47,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:08:47,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:47,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804904266] [2021-10-07 15:08:47,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804904266] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:47,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128903068] [2021-10-07 15:08:47,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:47,379 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:47,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:47,380 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:47,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-07 15:08:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:47,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-07 15:08:47,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:47,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:08:47,752 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 15:08:47,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-07 15:08:47,847 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 15:08:47,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-07 15:08:47,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:08:47,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128903068] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:47,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:47,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2021-10-07 15:08:47,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619608593] [2021-10-07 15:08:47,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:08:47,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:47,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:08:47,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:08:47,944 INFO L87 Difference]: Start difference. First operand 368 states and 1124 transitions. Second operand has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:48,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:48,345 INFO L93 Difference]: Finished difference Result 547 states and 1508 transitions. [2021-10-07 15:08:48,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:08:48,347 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-07 15:08:48,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:48,353 INFO L225 Difference]: With dead ends: 547 [2021-10-07 15:08:48,355 INFO L226 Difference]: Without dead ends: 547 [2021-10-07 15:08:48,355 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 348.4ms TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:08:48,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-10-07 15:08:48,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 403. [2021-10-07 15:08:48,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 387 states have (on average 3.136950904392765) internal successors, (1214), 402 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:48,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 1214 transitions. [2021-10-07 15:08:48,372 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 1214 transitions. Word has length 13 [2021-10-07 15:08:48,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:48,372 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 1214 transitions. [2021-10-07 15:08:48,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:48,373 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 1214 transitions. [2021-10-07 15:08:48,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:08:48,373 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:48,374 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:48,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:48,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:48,589 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:08:48,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:48,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1048989595, now seen corresponding path program 1 times [2021-10-07 15:08:48,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:48,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339879547] [2021-10-07 15:08:48,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:48,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:48,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:08:48,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:48,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339879547] [2021-10-07 15:08:48,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339879547] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:48,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641900352] [2021-10-07 15:08:48,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:48,865 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:48,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:48,867 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:48,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-07 15:08:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:48,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-07 15:08:48,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:49,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-07 15:08:49,176 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 15:08:49,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-10-07 15:08:49,246 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 15:08:49,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-10-07 15:08:49,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:08:49,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641900352] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:49,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:49,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:08:49,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411964238] [2021-10-07 15:08:49,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:08:49,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:49,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:08:49,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:08:49,323 INFO L87 Difference]: Start difference. First operand 403 states and 1214 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:50,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:50,135 INFO L93 Difference]: Finished difference Result 608 states and 1623 transitions. [2021-10-07 15:08:50,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:08:50,136 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-07 15:08:50,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:50,139 INFO L225 Difference]: With dead ends: 608 [2021-10-07 15:08:50,139 INFO L226 Difference]: Without dead ends: 608 [2021-10-07 15:08:50,139 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 716.3ms TimeCoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:08:50,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-10-07 15:08:50,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 434. [2021-10-07 15:08:50,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 418 states have (on average 3.0574162679425836) internal successors, (1278), 433 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) [2021-10-07 15:08:50,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1278 transitions. [2021-10-07 15:08:50,155 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1278 transitions. Word has length 13 [2021-10-07 15:08:50,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:50,155 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 1278 transitions. [2021-10-07 15:08:50,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:50,155 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1278 transitions. [2021-10-07 15:08:50,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:08:50,156 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:50,157 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:50,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:50,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-07 15:08:50,371 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:08:50,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:50,372 INFO L82 PathProgramCache]: Analyzing trace with hash -882753236, now seen corresponding path program 1 times [2021-10-07 15:08:50,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:50,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410545347] [2021-10-07 15:08:50,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:50,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:50,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:08:50,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:50,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410545347] [2021-10-07 15:08:50,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410545347] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:50,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13472165] [2021-10-07 15:08:50,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:50,557 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:50,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:50,559 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:50,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-07 15:08:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:50,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-07 15:08:50,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:51,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-07 15:08:51,083 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:08:51,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13472165] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:51,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:51,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 12 [2021-10-07 15:08:51,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541979194] [2021-10-07 15:08:51,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:08:51,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:51,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:08:51,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:08:51,085 INFO L87 Difference]: Start difference. First operand 434 states and 1278 transitions. Second operand has 14 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:51,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:51,544 INFO L93 Difference]: Finished difference Result 610 states and 1626 transitions. [2021-10-07 15:08:51,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:08:51,545 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.0) internal successors, (26), 13 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 14 [2021-10-07 15:08:51,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:51,548 INFO L225 Difference]: With dead ends: 610 [2021-10-07 15:08:51,548 INFO L226 Difference]: Without dead ends: 610 [2021-10-07 15:08:51,548 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 408.3ms TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:08:51,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-10-07 15:08:51,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 447. [2021-10-07 15:08:51,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 431 states have (on average 3.011600928074246) internal successors, (1298), 446 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:51,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1298 transitions. [2021-10-07 15:08:51,564 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1298 transitions. Word has length 14 [2021-10-07 15:08:51,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:51,565 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 1298 transitions. [2021-10-07 15:08:51,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:51,565 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1298 transitions. [2021-10-07 15:08:51,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:08:51,566 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:51,566 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:51,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:51,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:51,781 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:08:51,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:51,782 INFO L82 PathProgramCache]: Analyzing trace with hash 979445042, now seen corresponding path program 2 times [2021-10-07 15:08:51,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:51,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986477403] [2021-10-07 15:08:51,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:51,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:52,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:08:52,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:52,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986477403] [2021-10-07 15:08:52,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986477403] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:52,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636381666] [2021-10-07 15:08:52,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:08:52,032 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:52,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:52,037 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:52,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-07 15:08:52,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:08:52,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:52,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:08:52,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:52,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 133 [2021-10-07 15:08:52,403 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:08:52,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:08:52,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-07 15:08:52,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:08:52,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636381666] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:52,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:08:52,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2021-10-07 15:08:52,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785421193] [2021-10-07 15:08:52,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:08:52,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:52,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:08:52,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:08:52,465 INFO L87 Difference]: Start difference. First operand 447 states and 1298 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:52,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:52,587 INFO L93 Difference]: Finished difference Result 554 states and 1537 transitions. [2021-10-07 15:08:52,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:08:52,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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 14 [2021-10-07 15:08:52,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:52,590 INFO L225 Difference]: With dead ends: 554 [2021-10-07 15:08:52,591 INFO L226 Difference]: Without dead ends: 554 [2021-10-07 15:08:52,591 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 140.9ms TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:08:52,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-10-07 15:08:52,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 484. [2021-10-07 15:08:52,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 468 states have (on average 2.980769230769231) internal successors, (1395), 483 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:52,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1395 transitions. [2021-10-07 15:08:52,609 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1395 transitions. Word has length 14 [2021-10-07 15:08:52,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:52,609 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 1395 transitions. [2021-10-07 15:08:52,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:52,610 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1395 transitions. [2021-10-07 15:08:52,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:08:52,611 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:52,611 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:52,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:52,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:52,827 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:08:52,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:52,828 INFO L82 PathProgramCache]: Analyzing trace with hash 979444997, now seen corresponding path program 2 times [2021-10-07 15:08:52,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:52,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039702278] [2021-10-07 15:08:52,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:52,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:53,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:08:53,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:53,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039702278] [2021-10-07 15:08:53,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039702278] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:53,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082646524] [2021-10-07 15:08:53,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:08:53,090 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:53,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:53,091 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:53,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-07 15:08:53,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:08:53,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:53,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:08:53,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:53,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 79 [2021-10-07 15:08:53,447 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:08:53,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:08:53,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-07 15:08:53,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:08:53,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082646524] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:53,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:08:53,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2021-10-07 15:08:53,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330588438] [2021-10-07 15:08:53,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:08:53,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:53,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:08:53,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:08:53,510 INFO L87 Difference]: Start difference. First operand 484 states and 1395 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:53,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:53,616 INFO L93 Difference]: Finished difference Result 532 states and 1490 transitions. [2021-10-07 15:08:53,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:08:53,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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 14 [2021-10-07 15:08:53,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:53,619 INFO L225 Difference]: With dead ends: 532 [2021-10-07 15:08:53,619 INFO L226 Difference]: Without dead ends: 532 [2021-10-07 15:08:53,620 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 149.7ms TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:08:53,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-10-07 15:08:53,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 479. [2021-10-07 15:08:53,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 463 states have (on average 2.9719222462203025) internal successors, (1376), 478 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:53,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 1376 transitions. [2021-10-07 15:08:53,635 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 1376 transitions. Word has length 14 [2021-10-07 15:08:53,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:53,635 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 1376 transitions. [2021-10-07 15:08:53,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:53,636 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 1376 transitions. [2021-10-07 15:08:53,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:08:53,637 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:53,637 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:53,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:53,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:53,851 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:08:53,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:53,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1884064704, now seen corresponding path program 2 times [2021-10-07 15:08:53,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:53,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803551156] [2021-10-07 15:08:53,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:53,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:54,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:08:54,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:54,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803551156] [2021-10-07 15:08:54,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803551156] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:54,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214192845] [2021-10-07 15:08:54,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:08:54,482 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:54,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:54,487 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:54,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-07 15:08:54,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:08:54,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:54,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 15:08:54,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:54,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-07 15:08:54,900 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:08:54,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:08:54,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-07 15:08:54,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:08:54,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214192845] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:54,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:08:54,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 15 [2021-10-07 15:08:54,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241357241] [2021-10-07 15:08:54,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 15:08:54,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:54,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 15:08:54,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:08:54,968 INFO L87 Difference]: Start difference. First operand 479 states and 1376 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) [2021-10-07 15:08:55,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:55,143 INFO L93 Difference]: Finished difference Result 618 states and 1752 transitions. [2021-10-07 15:08:55,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:08:55,144 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 14 [2021-10-07 15:08:55,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:55,147 INFO L225 Difference]: With dead ends: 618 [2021-10-07 15:08:55,147 INFO L226 Difference]: Without dead ends: 618 [2021-10-07 15:08:55,147 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 347.2ms TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:08:55,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-10-07 15:08:55,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 526. [2021-10-07 15:08:55,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 510 states have (on average 2.9725490196078432) internal successors, (1516), 525 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:55,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1516 transitions. [2021-10-07 15:08:55,164 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1516 transitions. Word has length 14 [2021-10-07 15:08:55,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:55,165 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 1516 transitions. [2021-10-07 15:08:55,165 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) [2021-10-07 15:08:55,165 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1516 transitions. [2021-10-07 15:08:55,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:08:55,166 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:55,166 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:55,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:55,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-07 15:08:55,380 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:08:55,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:55,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1884064749, now seen corresponding path program 1 times [2021-10-07 15:08:55,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:55,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181637931] [2021-10-07 15:08:55,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:55,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:56,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:56,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:56,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181637931] [2021-10-07 15:08:56,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181637931] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:56,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108505501] [2021-10-07 15:08:56,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:56,112 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:56,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:56,113 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:08:56,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-07 15:08:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:56,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-07 15:08:56,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:56,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-07 15:08:56,587 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:08:56,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:08:56,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-07 15:08:56,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:08:56,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108505501] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:56,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:08:56,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 16 [2021-10-07 15:08:56,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922560190] [2021-10-07 15:08:56,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 15:08:56,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:56,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 15:08:56,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:08:56,669 INFO L87 Difference]: Start difference. First operand 526 states and 1516 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) [2021-10-07 15:08:56,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:56,806 INFO L93 Difference]: Finished difference Result 526 states and 1494 transitions. [2021-10-07 15:08:56,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:08:56,807 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 14 [2021-10-07 15:08:56,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:56,809 INFO L225 Difference]: With dead ends: 526 [2021-10-07 15:08:56,809 INFO L226 Difference]: Without dead ends: 526 [2021-10-07 15:08:56,810 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 501.5ms TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:08:56,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-10-07 15:08:56,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 488. [2021-10-07 15:08:56,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 472 states have (on average 2.98728813559322) internal successors, (1410), 487 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:56,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 1410 transitions. [2021-10-07 15:08:56,825 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 1410 transitions. Word has length 14 [2021-10-07 15:08:56,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:56,826 INFO L470 AbstractCegarLoop]: Abstraction has 488 states and 1410 transitions. [2021-10-07 15:08:56,826 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) [2021-10-07 15:08:56,826 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 1410 transitions. [2021-10-07 15:08:56,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:08:56,827 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:56,827 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:56,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:57,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:57,040 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:08:57,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:57,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1841100607, now seen corresponding path program 1 times [2021-10-07 15:08:57,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:57,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170360284] [2021-10-07 15:08:57,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:57,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:57,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:08:57,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:57,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170360284] [2021-10-07 15:08:57,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170360284] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:57,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417059220] [2021-10-07 15:08:57,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:57,295 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:57,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:57,296 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) [2021-10-07 15:08:57,319 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 [2021-10-07 15:08:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:57,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-07 15:08:57,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:57,629 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-07 15:08:57,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 108 [2021-10-07 15:08:58,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:08:58,883 INFO L354 Elim1Store]: treesize reduction 128, result has 36.3 percent of original size [2021-10-07 15:08:58,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 68 treesize of output 124 [2021-10-07 15:08:59,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-10-07 15:08:59,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:08:59,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:08:59,319 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:08:59,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:08:59,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-10-07 15:08:59,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:59,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417059220] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:59,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:59,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 15 [2021-10-07 15:08:59,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18689449] [2021-10-07 15:08:59,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 15:08:59,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:59,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 15:08:59,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:08:59,398 INFO L87 Difference]: Start difference. First operand 488 states and 1410 transitions. Second operand has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:00,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:00,040 INFO L93 Difference]: Finished difference Result 655 states and 1758 transitions. [2021-10-07 15:09:00,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:09:00,041 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 15:09:00,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:00,044 INFO L225 Difference]: With dead ends: 655 [2021-10-07 15:09:00,045 INFO L226 Difference]: Without dead ends: 655 [2021-10-07 15:09:00,045 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 670.6ms TimeCoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:09:00,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2021-10-07 15:09:00,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 488. [2021-10-07 15:09:00,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 472 states have (on average 2.98728813559322) internal successors, (1410), 487 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:00,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 1410 transitions. [2021-10-07 15:09:00,060 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 1410 transitions. Word has length 14 [2021-10-07 15:09:00,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:00,061 INFO L470 AbstractCegarLoop]: Abstraction has 488 states and 1410 transitions. [2021-10-07 15:09:00,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:00,061 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 1410 transitions. [2021-10-07 15:09:00,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:09:00,062 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:00,062 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:00,098 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 [2021-10-07 15:09:00,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:00,278 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:09:00,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:00,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1842590157, now seen corresponding path program 1 times [2021-10-07 15:09:00,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:00,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899351344] [2021-10-07 15:09:00,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:00,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:00,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:00,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:00,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899351344] [2021-10-07 15:09:00,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899351344] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:00,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060647346] [2021-10-07 15:09:00,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:00,803 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:00,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:00,804 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) [2021-10-07 15:09:00,834 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 [2021-10-07 15:09:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:01,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-07 15:09:01,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:01,157 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-07 15:09:01,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 703 treesize of output 725 [2021-10-07 15:09:01,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-07 15:09:02,411 INFO L354 Elim1Store]: treesize reduction 128, result has 36.3 percent of original size [2021-10-07 15:09:02,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 68 treesize of output 124 [2021-10-07 15:09:02,612 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-07 15:09:02,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 52 [2021-10-07 15:09:02,689 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:02,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-07 15:09:02,804 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:02,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-07 15:09:03,034 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:03,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-07 15:09:03,108 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-07 15:09:03,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2021-10-07 15:09:03,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:03,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060647346] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:03,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:03,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 15:09:03,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577272663] [2021-10-07 15:09:03,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 15:09:03,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:03,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 15:09:03,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:09:03,146 INFO L87 Difference]: Start difference. First operand 488 states and 1410 transitions. Second operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:03,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:03,969 INFO L93 Difference]: Finished difference Result 596 states and 1632 transitions. [2021-10-07 15:09:03,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:09:03,969 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 15:09:03,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:03,973 INFO L225 Difference]: With dead ends: 596 [2021-10-07 15:09:03,973 INFO L226 Difference]: Without dead ends: 596 [2021-10-07 15:09:03,973 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 917.1ms TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:09:03,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-10-07 15:09:03,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 519. [2021-10-07 15:09:03,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 503 states have (on average 2.960238568588469) internal successors, (1489), 518 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:03,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 1489 transitions. [2021-10-07 15:09:03,991 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 1489 transitions. Word has length 14 [2021-10-07 15:09:03,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:03,991 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 1489 transitions. [2021-10-07 15:09:03,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:03,992 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 1489 transitions. [2021-10-07 15:09:03,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:09:03,992 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:03,993 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:04,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-07 15:09:04,206 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,SelfDestructingSolverStorable24 [2021-10-07 15:09:04,207 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:09:04,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:04,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1842590112, now seen corresponding path program 1 times [2021-10-07 15:09:04,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:04,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269906221] [2021-10-07 15:09:04,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:04,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:04,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:09:04,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:04,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269906221] [2021-10-07 15:09:04,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269906221] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:04,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551519361] [2021-10-07 15:09:04,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:04,515 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:04,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:04,517 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) [2021-10-07 15:09:04,519 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 [2021-10-07 15:09:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:04,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-07 15:09:04,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:04,905 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-07 15:09:04,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 108 [2021-10-07 15:09:05,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-07 15:09:05,962 INFO L354 Elim1Store]: treesize reduction 128, result has 36.3 percent of original size [2021-10-07 15:09:05,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 68 treesize of output 124 [2021-10-07 15:09:06,167 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-07 15:09:06,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 50 [2021-10-07 15:09:06,242 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:06,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-07 15:09:06,347 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:06,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-07 15:09:06,540 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:06,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-07 15:09:06,606 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-07 15:09:06,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2021-10-07 15:09:06,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:06,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551519361] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:06,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:06,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 16 [2021-10-07 15:09:06,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694953886] [2021-10-07 15:09:06,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:09:06,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:06,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:09:06,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:09:06,639 INFO L87 Difference]: Start difference. First operand 519 states and 1489 transitions. Second operand has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:08,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:08,361 INFO L93 Difference]: Finished difference Result 1045 states and 2768 transitions. [2021-10-07 15:09:08,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:09:08,361 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 15:09:08,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:08,366 INFO L225 Difference]: With dead ends: 1045 [2021-10-07 15:09:08,367 INFO L226 Difference]: Without dead ends: 1045 [2021-10-07 15:09:08,367 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1541.1ms TimeCoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:09:08,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2021-10-07 15:09:08,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 610. [2021-10-07 15:09:08,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 594 states have (on average 2.9343434343434343) internal successors, (1743), 609 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:08,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 1743 transitions. [2021-10-07 15:09:08,390 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 1743 transitions. Word has length 14 [2021-10-07 15:09:08,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:08,390 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 1743 transitions. [2021-10-07 15:09:08,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:08,391 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 1743 transitions. [2021-10-07 15:09:08,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 15:09:08,392 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:08,392 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:08,441 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 [2021-10-07 15:09:08,605 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,SelfDestructingSolverStorable25 [2021-10-07 15:09:08,605 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:09:08,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:08,606 INFO L82 PathProgramCache]: Analyzing trace with hash 298063474, now seen corresponding path program 1 times [2021-10-07 15:09:08,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:08,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84046892] [2021-10-07 15:09:08,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:08,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:08,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:09:08,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:08,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84046892] [2021-10-07 15:09:08,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84046892] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:08,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158155641] [2021-10-07 15:09:08,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:08,904 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:08,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:08,905 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) [2021-10-07 15:09:08,915 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 [2021-10-07 15:09:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:09,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-07 15:09:09,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:09,344 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-07 15:09:09,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 979 treesize of output 993 [2021-10-07 15:09:10,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-07 15:09:10,553 INFO L354 Elim1Store]: treesize reduction 128, result has 36.3 percent of original size [2021-10-07 15:09:10,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 68 treesize of output 124 [2021-10-07 15:09:10,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-07 15:09:10,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-10-07 15:09:10,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:09:10,980 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:10,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:09:11,088 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:11,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:09:11,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-07 15:09:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:09:11,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158155641] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:11,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:11,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 16 [2021-10-07 15:09:11,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650832819] [2021-10-07 15:09:11,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:09:11,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:11,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:09:11,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:09:11,168 INFO L87 Difference]: Start difference. First operand 610 states and 1743 transitions. Second operand has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 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) [2021-10-07 15:09:11,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:11,767 INFO L93 Difference]: Finished difference Result 684 states and 1862 transitions. [2021-10-07 15:09:11,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:09:11,768 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 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 15 [2021-10-07 15:09:11,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:11,771 INFO L225 Difference]: With dead ends: 684 [2021-10-07 15:09:11,771 INFO L226 Difference]: Without dead ends: 684 [2021-10-07 15:09:11,772 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 703.1ms TimeCoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:09:11,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2021-10-07 15:09:11,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 576. [2021-10-07 15:09:11,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 560 states have (on average 2.9535714285714287) internal successors, (1654), 575 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:11,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 1654 transitions. [2021-10-07 15:09:11,788 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 1654 transitions. Word has length 15 [2021-10-07 15:09:11,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:11,789 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 1654 transitions. [2021-10-07 15:09:11,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 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) [2021-10-07 15:09:11,789 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 1654 transitions. [2021-10-07 15:09:11,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 15:09:11,790 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:11,790 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:11,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-10-07 15:09:12,004 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,SelfDestructingSolverStorable26 [2021-10-07 15:09:12,005 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:09:12,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:12,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1723574564, now seen corresponding path program 2 times [2021-10-07 15:09:12,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:12,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139609049] [2021-10-07 15:09:12,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:12,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:12,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:09:12,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:12,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139609049] [2021-10-07 15:09:12,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139609049] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:12,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256809191] [2021-10-07 15:09:12,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:09:12,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:12,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:12,507 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) [2021-10-07 15:09:12,509 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 [2021-10-07 15:09:12,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:09:12,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:12,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 15:09:12,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:12,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 83 [2021-10-07 15:09:13,182 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:13,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:09:13,246 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:13,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:09:13,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-07 15:09:13,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:09:13,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256809191] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:09:13,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:09:13,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 17 [2021-10-07 15:09:13,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982034773] [2021-10-07 15:09:13,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:09:13,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:13,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:09:13,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:09:13,305 INFO L87 Difference]: Start difference. First operand 576 states and 1654 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) [2021-10-07 15:09:13,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:13,524 INFO L93 Difference]: Finished difference Result 705 states and 1963 transitions. [2021-10-07 15:09:13,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:09:13,524 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 15 [2021-10-07 15:09:13,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:13,527 INFO L225 Difference]: With dead ends: 705 [2021-10-07 15:09:13,528 INFO L226 Difference]: Without dead ends: 705 [2021-10-07 15:09:13,528 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 397.0ms TimeCoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:09:13,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2021-10-07 15:09:13,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 530. [2021-10-07 15:09:13,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 514 states have (on average 2.9280155642023344) internal successors, (1505), 529 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:13,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1505 transitions. [2021-10-07 15:09:13,546 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1505 transitions. Word has length 15 [2021-10-07 15:09:13,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:13,546 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 1505 transitions. [2021-10-07 15:09:13,547 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) [2021-10-07 15:09:13,547 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1505 transitions. [2021-10-07 15:09:13,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 15:09:13,548 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:13,548 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:13,591 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 [2021-10-07 15:09:13,761 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,SelfDestructingSolverStorable27 [2021-10-07 15:09:13,761 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:09:13,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:13,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1284650275, now seen corresponding path program 1 times [2021-10-07 15:09:13,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:13,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677561148] [2021-10-07 15:09:13,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:13,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:13,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:09:13,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:13,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677561148] [2021-10-07 15:09:13,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677561148] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:13,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700105074] [2021-10-07 15:09:13,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:13,816 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:13,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:13,817 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) [2021-10-07 15:09:13,834 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 [2021-10-07 15:09:14,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:14,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:09:14,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:14,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:09:14,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700105074] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:14,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:14,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-07 15:09:14,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020429376] [2021-10-07 15:09:14,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 15:09:14,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:14,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 15:09:14,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:09:14,226 INFO L87 Difference]: Start difference. First operand 530 states and 1505 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:14,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:14,329 INFO L93 Difference]: Finished difference Result 937 states and 2557 transitions. [2021-10-07 15:09:14,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:09:14,330 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 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 15 [2021-10-07 15:09:14,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:14,334 INFO L225 Difference]: With dead ends: 937 [2021-10-07 15:09:14,334 INFO L226 Difference]: Without dead ends: 921 [2021-10-07 15:09:14,335 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 54.0ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:09:14,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2021-10-07 15:09:14,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 813. [2021-10-07 15:09:14,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 793 states have (on average 2.878940731399748) internal successors, (2283), 812 states have internal predecessors, (2283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:14,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 2283 transitions. [2021-10-07 15:09:14,359 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 2283 transitions. Word has length 15 [2021-10-07 15:09:14,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:14,360 INFO L470 AbstractCegarLoop]: Abstraction has 813 states and 2283 transitions. [2021-10-07 15:09:14,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:14,360 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 2283 transitions. [2021-10-07 15:09:14,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 15:09:14,362 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:14,362 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:14,402 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 [2021-10-07 15:09:14,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-07 15:09:14,576 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:09:14,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:14,577 INFO L82 PathProgramCache]: Analyzing trace with hash -504998264, now seen corresponding path program 2 times [2021-10-07 15:09:14,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:14,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586963749] [2021-10-07 15:09:14,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:14,578 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:14,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:09:14,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:14,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586963749] [2021-10-07 15:09:14,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586963749] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:14,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842497278] [2021-10-07 15:09:14,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:09:14,901 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:14,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:14,902 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) [2021-10-07 15:09:14,906 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 [2021-10-07 15:09:15,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:09:15,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:15,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:09:15,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:15,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 542 treesize of output 526 [2021-10-07 15:09:15,456 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:15,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:09:15,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-07 15:09:15,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:09:15,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842497278] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:09:15,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:09:15,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2021-10-07 15:09:15,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999059969] [2021-10-07 15:09:15,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:09:15,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:15,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:09:15,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:09:15,512 INFO L87 Difference]: Start difference. First operand 813 states and 2283 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:15,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:15,649 INFO L93 Difference]: Finished difference Result 1011 states and 2760 transitions. [2021-10-07 15:09:15,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:09:15,649 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 15 [2021-10-07 15:09:15,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:15,660 INFO L225 Difference]: With dead ends: 1011 [2021-10-07 15:09:15,660 INFO L226 Difference]: Without dead ends: 1011 [2021-10-07 15:09:15,661 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 225.2ms TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:09:15,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2021-10-07 15:09:15,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 846. [2021-10-07 15:09:15,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 826 states have (on average 2.87046004842615) internal successors, (2371), 845 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:15,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 2371 transitions. [2021-10-07 15:09:15,688 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 2371 transitions. Word has length 15 [2021-10-07 15:09:15,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:15,688 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 2371 transitions. [2021-10-07 15:09:15,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:15,688 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 2371 transitions. [2021-10-07 15:09:15,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 15:09:15,690 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:15,690 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:15,729 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 [2021-10-07 15:09:15,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:15,905 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:09:15,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:15,906 INFO L82 PathProgramCache]: Analyzing trace with hash -503508714, now seen corresponding path program 2 times [2021-10-07 15:09:15,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:15,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686999985] [2021-10-07 15:09:15,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:15,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:16,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:09:16,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:16,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686999985] [2021-10-07 15:09:16,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686999985] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:16,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115249723] [2021-10-07 15:09:16,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:09:16,229 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:16,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:16,231 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) [2021-10-07 15:09:16,251 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 [2021-10-07 15:09:16,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:09:16,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:16,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 15:09:16,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:16,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-07 15:09:16,868 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:16,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:09:16,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-07 15:09:16,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:09:16,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115249723] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:09:16,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:09:16,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 14 [2021-10-07 15:09:16,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887878966] [2021-10-07 15:09:16,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 15:09:16,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:16,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 15:09:16,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:09:16,924 INFO L87 Difference]: Start difference. First operand 846 states and 2371 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:17,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:17,110 INFO L93 Difference]: Finished difference Result 1106 states and 3086 transitions. [2021-10-07 15:09:17,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:09:17,111 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 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 15 [2021-10-07 15:09:17,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:17,115 INFO L225 Difference]: With dead ends: 1106 [2021-10-07 15:09:17,115 INFO L226 Difference]: Without dead ends: 1106 [2021-10-07 15:09:17,115 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 263.5ms TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:09:17,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2021-10-07 15:09:17,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 864. [2021-10-07 15:09:17,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 844 states have (on average 2.859004739336493) internal successors, (2413), 863 states have internal predecessors, (2413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:17,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 2413 transitions. [2021-10-07 15:09:17,142 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 2413 transitions. Word has length 15 [2021-10-07 15:09:17,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:17,142 INFO L470 AbstractCegarLoop]: Abstraction has 864 states and 2413 transitions. [2021-10-07 15:09:17,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:17,143 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 2413 transitions. [2021-10-07 15:09:17,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 15:09:17,144 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:17,144 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:17,182 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 [2021-10-07 15:09:17,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:17,359 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:09:17,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:17,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1390063056, now seen corresponding path program 3 times [2021-10-07 15:09:17,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:17,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937387455] [2021-10-07 15:09:17,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:17,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:17,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:09:17,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:17,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937387455] [2021-10-07 15:09:17,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937387455] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:17,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820716180] [2021-10-07 15:09:17,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:09:17,672 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:17,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:17,673 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) [2021-10-07 15:09:17,674 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 [2021-10-07 15:09:18,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-07 15:09:18,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:18,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 15:09:18,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:18,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 319 treesize of output 303 [2021-10-07 15:09:18,285 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:18,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:09:18,351 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:18,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:09:18,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-07 15:09:18,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:09:18,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820716180] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:09:18,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:09:18,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2021-10-07 15:09:18,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914487396] [2021-10-07 15:09:18,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:09:18,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:18,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:09:18,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:09:18,407 INFO L87 Difference]: Start difference. First operand 864 states and 2413 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:18,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:18,531 INFO L93 Difference]: Finished difference Result 978 states and 2662 transitions. [2021-10-07 15:09:18,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:09:18,532 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 15:09:18,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:18,536 INFO L225 Difference]: With dead ends: 978 [2021-10-07 15:09:18,536 INFO L226 Difference]: Without dead ends: 978 [2021-10-07 15:09:18,537 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 259.3ms TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:09:18,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2021-10-07 15:09:18,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 831. [2021-10-07 15:09:18,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 811 states have (on average 2.855733662145499) internal successors, (2316), 830 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:18,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2316 transitions. [2021-10-07 15:09:18,562 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2316 transitions. Word has length 15 [2021-10-07 15:09:18,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:18,562 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 2316 transitions. [2021-10-07 15:09:18,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:18,562 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2316 transitions. [2021-10-07 15:09:18,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 15:09:18,564 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:18,564 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:18,606 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 [2021-10-07 15:09:18,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:18,777 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:09:18,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:18,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1479393150, now seen corresponding path program 3 times [2021-10-07 15:09:18,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:18,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833191989] [2021-10-07 15:09:18,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:18,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:19,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:09:19,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:19,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833191989] [2021-10-07 15:09:19,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833191989] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:19,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373316945] [2021-10-07 15:09:19,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:09:19,065 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:19,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:19,067 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) [2021-10-07 15:09:19,072 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 [2021-10-07 15:09:19,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-07 15:09:19,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:19,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 15:09:19,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:19,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 397 treesize of output 365 [2021-10-07 15:09:19,742 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:19,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:09:19,817 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:19,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:09:19,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-07 15:09:19,874 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:09:19,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373316945] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:09:19,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:09:19,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 15 [2021-10-07 15:09:19,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835251877] [2021-10-07 15:09:19,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:09:19,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:19,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:09:19,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:09:19,877 INFO L87 Difference]: Start difference. First operand 831 states and 2316 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) [2021-10-07 15:09:20,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:20,076 INFO L93 Difference]: Finished difference Result 895 states and 2439 transitions. [2021-10-07 15:09:20,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:09:20,077 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 15 [2021-10-07 15:09:20,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:20,079 INFO L225 Difference]: With dead ends: 895 [2021-10-07 15:09:20,079 INFO L226 Difference]: Without dead ends: 895 [2021-10-07 15:09:20,079 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 295.9ms TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:09:20,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2021-10-07 15:09:20,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 699. [2021-10-07 15:09:20,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 679 states have (on average 2.8100147275405005) internal successors, (1908), 698 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:20,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1908 transitions. [2021-10-07 15:09:20,101 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1908 transitions. Word has length 15 [2021-10-07 15:09:20,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:20,101 INFO L470 AbstractCegarLoop]: Abstraction has 699 states and 1908 transitions. [2021-10-07 15:09:20,101 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) [2021-10-07 15:09:20,101 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1908 transitions. [2021-10-07 15:09:20,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:09:20,103 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:20,103 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:20,141 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 [2021-10-07 15:09:20,318 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,SelfDestructingSolverStorable32 [2021-10-07 15:09:20,319 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:09:20,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:20,320 INFO L82 PathProgramCache]: Analyzing trace with hash 2077782027, now seen corresponding path program 2 times [2021-10-07 15:09:20,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:20,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173530294] [2021-10-07 15:09:20,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:20,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:09:20,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:20,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173530294] [2021-10-07 15:09:20,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173530294] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:20,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806220431] [2021-10-07 15:09:20,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:09:20,379 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:20,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:20,380 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) [2021-10-07 15:09:20,399 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 [2021-10-07 15:09:20,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:09:20,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:20,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:09:20,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:20,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:09:20,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806220431] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:09:20,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:09:20,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2021-10-07 15:09:20,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809326338] [2021-10-07 15:09:20,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:09:20,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:20,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:09:20,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:09:20,802 INFO L87 Difference]: Start difference. First operand 699 states and 1908 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:20,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:20,826 INFO L93 Difference]: Finished difference Result 1171 states and 3371 transitions. [2021-10-07 15:09:20,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:09:20,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:09:20,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:20,829 INFO L225 Difference]: With dead ends: 1171 [2021-10-07 15:09:20,830 INFO L226 Difference]: Without dead ends: 1165 [2021-10-07 15:09:20,830 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:09:20,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2021-10-07 15:09:20,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 751. [2021-10-07 15:09:20,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 737 states have (on average 3.2293080054274084) internal successors, (2380), 750 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) [2021-10-07 15:09:20,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 2380 transitions. [2021-10-07 15:09:20,856 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 2380 transitions. Word has length 16 [2021-10-07 15:09:20,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:20,856 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 2380 transitions. [2021-10-07 15:09:20,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:20,856 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 2380 transitions. [2021-10-07 15:09:20,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:09:20,859 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:20,859 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:20,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-10-07 15:09:21,068 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,SelfDestructingSolverStorable33 [2021-10-07 15:09:21,069 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:09:21,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:21,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1311618815, now seen corresponding path program 2 times [2021-10-07 15:09:21,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:21,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487798836] [2021-10-07 15:09:21,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:21,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:21,549 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:09:21,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:21,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487798836] [2021-10-07 15:09:21,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487798836] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:21,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916154855] [2021-10-07 15:09:21,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:09:21,550 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:21,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:21,555 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) [2021-10-07 15:09:21,576 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 [2021-10-07 15:09:21,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:09:21,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:21,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:09:21,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:21,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 558 treesize of output 542 [2021-10-07 15:09:22,202 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:22,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:09:22,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-07 15:09:22,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:09:22,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916154855] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:09:22,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:09:22,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 13 [2021-10-07 15:09:22,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126199674] [2021-10-07 15:09:22,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:09:22,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:22,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:09:22,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:09:22,256 INFO L87 Difference]: Start difference. First operand 751 states and 2380 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:22,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:22,376 INFO L93 Difference]: Finished difference Result 887 states and 2674 transitions. [2021-10-07 15:09:22,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:09:22,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:09:22,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:22,379 INFO L225 Difference]: With dead ends: 887 [2021-10-07 15:09:22,379 INFO L226 Difference]: Without dead ends: 887 [2021-10-07 15:09:22,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 280.3ms TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:09:22,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2021-10-07 15:09:22,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 751. [2021-10-07 15:09:22,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 737 states have (on average 3.2293080054274084) internal successors, (2380), 750 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) [2021-10-07 15:09:22,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 2380 transitions. [2021-10-07 15:09:22,403 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 2380 transitions. Word has length 16 [2021-10-07 15:09:22,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:22,404 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 2380 transitions. [2021-10-07 15:09:22,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:22,404 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 2380 transitions. [2021-10-07 15:09:22,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:09:22,405 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:22,406 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:22,448 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 [2021-10-07 15:09:22,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:22,621 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:09:22,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:22,621 INFO L82 PathProgramCache]: Analyzing trace with hash 583442505, now seen corresponding path program 3 times [2021-10-07 15:09:22,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:22,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740296378] [2021-10-07 15:09:22,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:22,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:23,102 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:09:23,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:23,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740296378] [2021-10-07 15:09:23,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740296378] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:23,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466391242] [2021-10-07 15:09:23,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:09:23,103 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:23,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:23,104 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) [2021-10-07 15:09:23,127 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 [2021-10-07 15:09:23,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-07 15:09:23,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:23,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 15:09:23,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:23,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 83 [2021-10-07 15:09:23,794 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:23,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:09:23,871 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:23,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:09:23,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-07 15:09:23,930 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:09:23,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466391242] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:09:23,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:09:23,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 14 [2021-10-07 15:09:23,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053534063] [2021-10-07 15:09:23,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:09:23,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:23,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:09:23,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:09:23,933 INFO L87 Difference]: Start difference. First operand 751 states and 2380 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:24,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:24,055 INFO L93 Difference]: Finished difference Result 795 states and 2447 transitions. [2021-10-07 15:09:24,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:09:24,055 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:09:24,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:24,057 INFO L225 Difference]: With dead ends: 795 [2021-10-07 15:09:24,057 INFO L226 Difference]: Without dead ends: 795 [2021-10-07 15:09:24,057 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 328.4ms TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:09:24,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2021-10-07 15:09:24,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 720. [2021-10-07 15:09:24,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 706 states have (on average 3.2521246458923514) internal successors, (2296), 719 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:24,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 2296 transitions. [2021-10-07 15:09:24,074 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 2296 transitions. Word has length 16 [2021-10-07 15:09:24,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:24,075 INFO L470 AbstractCegarLoop]: Abstraction has 720 states and 2296 transitions. [2021-10-07 15:09:24,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:24,075 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 2296 transitions. [2021-10-07 15:09:24,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:09:24,076 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:24,076 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:24,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-10-07 15:09:24,286 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,SelfDestructingSolverStorable35 [2021-10-07 15:09:24,287 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:09:24,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:24,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1712691909, now seen corresponding path program 1 times [2021-10-07 15:09:24,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:24,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772497045] [2021-10-07 15:09:24,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:24,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:25,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:25,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:25,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772497045] [2021-10-07 15:09:25,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772497045] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:25,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36845234] [2021-10-07 15:09:25,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:25,139 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:25,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:25,140 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) [2021-10-07 15:09:25,156 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 [2021-10-07 15:09:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:25,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-07 15:09:25,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:25,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:09:25,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:09:25,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:09:25,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:09:26,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:09:26,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36845234] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:26,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:26,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2021-10-07 15:09:26,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506972299] [2021-10-07 15:09:26,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 15:09:26,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:26,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 15:09:26,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:09:26,038 INFO L87 Difference]: Start difference. First operand 720 states and 2296 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 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) [2021-10-07 15:09:27,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:27,686 INFO L93 Difference]: Finished difference Result 918 states and 2725 transitions. [2021-10-07 15:09:27,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:09:27,687 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 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 17 [2021-10-07 15:09:27,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:27,689 INFO L225 Difference]: With dead ends: 918 [2021-10-07 15:09:27,690 INFO L226 Difference]: Without dead ends: 878 [2021-10-07 15:09:27,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1635.4ms TimeCoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:09:27,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2021-10-07 15:09:27,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 831. [2021-10-07 15:09:27,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 817 states have (on average 3.123623011015912) internal successors, (2552), 830 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:27,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2552 transitions. [2021-10-07 15:09:27,716 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2552 transitions. Word has length 17 [2021-10-07 15:09:27,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:27,716 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 2552 transitions. [2021-10-07 15:09:27,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 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) [2021-10-07 15:09:27,717 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2552 transitions. [2021-10-07 15:09:27,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:09:27,718 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:27,718 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:27,757 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 [2021-10-07 15:09:27,933 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,SelfDestructingSolverStorable36 [2021-10-07 15:09:27,934 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:09:27,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:27,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1714181428, now seen corresponding path program 1 times [2021-10-07 15:09:27,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:27,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704435709] [2021-10-07 15:09:27,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:27,935 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:28,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:09:28,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:28,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704435709] [2021-10-07 15:09:28,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704435709] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:28,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492896497] [2021-10-07 15:09:28,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:28,306 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:28,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:28,307 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) [2021-10-07 15:09:28,325 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 [2021-10-07 15:09:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:28,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-07 15:09:28,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:28,884 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-07 15:09:28,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 1079 treesize of output 1045 [2021-10-07 15:09:29,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-07 15:09:30,538 INFO L354 Elim1Store]: treesize reduction 128, result has 36.3 percent of original size [2021-10-07 15:09:30,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 68 treesize of output 124 [2021-10-07 15:09:30,747 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:30,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 46 [2021-10-07 15:09:30,865 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:30,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-07 15:09:30,965 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:30,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-07 15:09:31,085 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:31,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-07 15:09:31,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:31,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492896497] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:31,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:31,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 17 [2021-10-07 15:09:31,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335528013] [2021-10-07 15:09:31,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 15:09:31,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:31,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 15:09:31,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:09:31,818 INFO L87 Difference]: Start difference. First operand 831 states and 2552 transitions. Second operand has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:43,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:43,908 INFO L93 Difference]: Finished difference Result 984 states and 2886 transitions. [2021-10-07 15:09:43,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 15:09:43,909 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 15:09:43,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:43,910 INFO L225 Difference]: With dead ends: 984 [2021-10-07 15:09:43,911 INFO L226 Difference]: Without dead ends: 984 [2021-10-07 15:09:43,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 4930.7ms TimeCoverageRelationStatistics Valid=154, Invalid=901, Unknown=1, NotChecked=0, Total=1056 [2021-10-07 15:09:43,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2021-10-07 15:09:43,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 855. [2021-10-07 15:09:43,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 841 states have (on average 3.1105826397146252) internal successors, (2616), 854 states have internal predecessors, (2616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:43,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 2616 transitions. [2021-10-07 15:09:43,932 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 2616 transitions. Word has length 17 [2021-10-07 15:09:43,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:43,932 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 2616 transitions. [2021-10-07 15:09:43,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:43,933 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 2616 transitions. [2021-10-07 15:09:43,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:09:43,934 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:43,934 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:43,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-07 15:09:44,149 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,SelfDestructingSolverStorable37 [2021-10-07 15:09:44,150 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:09:44,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:44,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1714181510, now seen corresponding path program 1 times [2021-10-07 15:09:44,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:44,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518612408] [2021-10-07 15:09:44,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:44,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:44,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:09:44,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:44,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518612408] [2021-10-07 15:09:44,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518612408] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:44,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851433860] [2021-10-07 15:09:44,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:44,518 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:44,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:44,519 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) [2021-10-07 15:09:44,538 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 [2021-10-07 15:09:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:45,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-07 15:09:45,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:45,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:09:45,226 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 15:09:45,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-07 15:09:45,330 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 15:09:45,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-07 15:09:45,436 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 15:09:45,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-07 15:09:45,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:09:45,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851433860] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:45,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:45,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 15:09:45,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095756760] [2021-10-07 15:09:45,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:09:45,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:45,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:09:45,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:09:45,612 INFO L87 Difference]: Start difference. First operand 855 states and 2616 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 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) [2021-10-07 15:09:46,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:46,227 INFO L93 Difference]: Finished difference Result 915 states and 2718 transitions. [2021-10-07 15:09:46,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:09:46,228 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 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 17 [2021-10-07 15:09:46,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:46,230 INFO L225 Difference]: With dead ends: 915 [2021-10-07 15:09:46,230 INFO L226 Difference]: Without dead ends: 915 [2021-10-07 15:09:46,230 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 667.1ms TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:09:46,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2021-10-07 15:09:46,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 915. [2021-10-07 15:09:46,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 901 states have (on average 3.016648168701443) internal successors, (2718), 914 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:46,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 2718 transitions. [2021-10-07 15:09:46,248 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 2718 transitions. Word has length 17 [2021-10-07 15:09:46,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:46,248 INFO L470 AbstractCegarLoop]: Abstraction has 915 states and 2718 transitions. [2021-10-07 15:09:46,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 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) [2021-10-07 15:09:46,248 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 2718 transitions. [2021-10-07 15:09:46,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:09:46,249 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:46,250 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:46,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-10-07 15:09:46,452 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,SelfDestructingSolverStorable38 [2021-10-07 15:09:46,453 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:09:46,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:46,455 INFO L82 PathProgramCache]: Analyzing trace with hash -591873025, now seen corresponding path program 1 times [2021-10-07 15:09:46,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:46,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937869495] [2021-10-07 15:09:46,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:46,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:47,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:09:47,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:47,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937869495] [2021-10-07 15:09:47,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937869495] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:47,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873732814] [2021-10-07 15:09:47,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:47,307 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:47,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:47,308 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) [2021-10-07 15:09:47,309 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 [2021-10-07 15:09:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:47,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 15:09:47,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:48,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:09:48,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873732814] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:48,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:48,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 3] total 12 [2021-10-07 15:09:48,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615901857] [2021-10-07 15:09:48,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:09:48,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:48,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:09:48,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:09:48,021 INFO L87 Difference]: Start difference. First operand 915 states and 2718 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 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) [2021-10-07 15:09:49,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:49,146 INFO L93 Difference]: Finished difference Result 1282 states and 3710 transitions. [2021-10-07 15:09:49,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:09:49,147 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 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 18 [2021-10-07 15:09:49,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:49,150 INFO L225 Difference]: With dead ends: 1282 [2021-10-07 15:09:49,150 INFO L226 Difference]: Without dead ends: 1282 [2021-10-07 15:09:49,151 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1119.6ms TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:09:49,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2021-10-07 15:09:49,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 875. [2021-10-07 15:09:49,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 861 states have (on average 3.0534262485481998) internal successors, (2629), 874 states have internal predecessors, (2629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:49,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 2629 transitions. [2021-10-07 15:09:49,176 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 2629 transitions. Word has length 18 [2021-10-07 15:09:49,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:49,176 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 2629 transitions. [2021-10-07 15:09:49,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 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) [2021-10-07 15:09:49,177 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 2629 transitions. [2021-10-07 15:09:49,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:09:49,181 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:49,181 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:49,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-10-07 15:09:49,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-07 15:09:49,395 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:09:49,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:49,397 INFO L82 PathProgramCache]: Analyzing trace with hash -590383506, now seen corresponding path program 2 times [2021-10-07 15:09:49,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:49,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218499402] [2021-10-07 15:09:49,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:49,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:50,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:50,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:50,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218499402] [2021-10-07 15:09:50,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218499402] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:50,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417374710] [2021-10-07 15:09:50,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:09:50,603 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:50,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:50,605 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) [2021-10-07 15:09:50,626 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 [2021-10-07 15:09:51,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:09:51,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:51,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:09:51,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:51,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:09:51,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417374710] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:09:51,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:09:51,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 11 [2021-10-07 15:09:51,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831007051] [2021-10-07 15:09:51,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:09:51,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:51,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:09:51,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:09:51,364 INFO L87 Difference]: Start difference. First operand 875 states and 2629 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) [2021-10-07 15:09:51,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:51,447 INFO L93 Difference]: Finished difference Result 1070 states and 3368 transitions. [2021-10-07 15:09:51,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:09:51,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 15:09:51,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:51,451 INFO L225 Difference]: With dead ends: 1070 [2021-10-07 15:09:51,452 INFO L226 Difference]: Without dead ends: 1070 [2021-10-07 15:09:51,452 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 466.4ms TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:09:51,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2021-10-07 15:09:51,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 990. [2021-10-07 15:09:51,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 976 states have (on average 3.269467213114754) internal successors, (3191), 989 states have internal predecessors, (3191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:51,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 3191 transitions. [2021-10-07 15:09:51,482 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 3191 transitions. Word has length 18 [2021-10-07 15:09:51,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:51,482 INFO L470 AbstractCegarLoop]: Abstraction has 990 states and 3191 transitions. [2021-10-07 15:09:51,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) [2021-10-07 15:09:51,483 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 3191 transitions. [2021-10-07 15:09:51,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:09:51,485 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:51,485 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:51,524 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 [2021-10-07 15:09:51,698 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,SelfDestructingSolverStorable40 [2021-10-07 15:09:51,699 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:09:51,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:51,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1834818891, now seen corresponding path program 2 times [2021-10-07 15:09:51,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:51,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694035394] [2021-10-07 15:09:51,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:51,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:53,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:53,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:53,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694035394] [2021-10-07 15:09:53,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694035394] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:53,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768527343] [2021-10-07 15:09:53,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:09:53,341 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:53,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:53,342 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) [2021-10-07 15:09:53,343 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 [2021-10-07 15:09:53,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:09:53,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:53,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 15:09:53,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:54,236 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:54,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-07 15:09:54,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:09:54,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768527343] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:09:54,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:09:54,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 16 [2021-10-07 15:09:54,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93473078] [2021-10-07 15:09:54,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:09:54,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:54,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:09:54,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:09:54,309 INFO L87 Difference]: Start difference. First operand 990 states and 3191 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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) [2021-10-07 15:09:54,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:54,437 INFO L93 Difference]: Finished difference Result 1004 states and 3221 transitions. [2021-10-07 15:09:54,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:09:54,438 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 15:09:54,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:54,441 INFO L225 Difference]: With dead ends: 1004 [2021-10-07 15:09:54,441 INFO L226 Difference]: Without dead ends: 1004 [2021-10-07 15:09:54,441 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 817.4ms TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:09:54,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-10-07 15:09:54,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 1004. [2021-10-07 15:09:54,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 990 states have (on average 3.2535353535353537) internal successors, (3221), 1003 states have internal predecessors, (3221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:54,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 3221 transitions. [2021-10-07 15:09:54,464 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 3221 transitions. Word has length 18 [2021-10-07 15:09:54,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:54,464 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 3221 transitions. [2021-10-07 15:09:54,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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) [2021-10-07 15:09:54,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 3221 transitions. [2021-10-07 15:09:54,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:09:54,466 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:54,466 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:54,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-10-07 15:09:54,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:54,680 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:09:54,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:54,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1834818809, now seen corresponding path program 2 times [2021-10-07 15:09:54,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:54,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611551039] [2021-10-07 15:09:54,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:54,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:55,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:09:55,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:55,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611551039] [2021-10-07 15:09:55,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611551039] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:55,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047723082] [2021-10-07 15:09:55,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:09:55,463 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:55,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:55,464 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) [2021-10-07 15:09:55,465 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 [2021-10-07 15:09:56,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:09:56,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:56,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:09:56,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:56,342 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:56,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-07 15:09:56,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:09:56,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047723082] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:09:56,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:09:56,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 14 [2021-10-07 15:09:56,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30156975] [2021-10-07 15:09:56,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:09:56,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:56,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:09:56,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:09:56,387 INFO L87 Difference]: Start difference. First operand 1004 states and 3221 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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) [2021-10-07 15:09:56,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:56,503 INFO L93 Difference]: Finished difference Result 1004 states and 3215 transitions. [2021-10-07 15:09:56,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:09:56,504 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 15:09:56,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:56,506 INFO L225 Difference]: With dead ends: 1004 [2021-10-07 15:09:56,506 INFO L226 Difference]: Without dead ends: 1004 [2021-10-07 15:09:56,506 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 434.9ms TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:09:56,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-10-07 15:09:56,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 985. [2021-10-07 15:09:56,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 971 states have (on average 3.278063851699279) internal successors, (3183), 984 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:56,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 3183 transitions. [2021-10-07 15:09:56,529 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 3183 transitions. Word has length 18 [2021-10-07 15:09:56,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:56,529 INFO L470 AbstractCegarLoop]: Abstraction has 985 states and 3183 transitions. [2021-10-07 15:09:56,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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) [2021-10-07 15:09:56,529 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 3183 transitions. [2021-10-07 15:09:56,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:09:56,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:56,531 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:56,562 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 [2021-10-07 15:09:56,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:56,745 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:09:56,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:56,745 INFO L82 PathProgramCache]: Analyzing trace with hash -410231322, now seen corresponding path program 2 times [2021-10-07 15:09:56,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:56,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416878415] [2021-10-07 15:09:56,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:56,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:58,211 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:58,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:58,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416878415] [2021-10-07 15:09:58,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416878415] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:58,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144489209] [2021-10-07 15:09:58,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:09:58,212 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:58,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:58,213 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) [2021-10-07 15:09:58,214 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 [2021-10-07 15:09:58,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:09:58,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:58,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 15:09:58,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:59,145 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:59,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-07 15:09:59,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:09:59,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144489209] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:09:59,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:09:59,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 16 [2021-10-07 15:09:59,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708221547] [2021-10-07 15:09:59,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:09:59,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:59,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:09:59,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:09:59,198 INFO L87 Difference]: Start difference. First operand 985 states and 3183 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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) [2021-10-07 15:09:59,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:59,352 INFO L93 Difference]: Finished difference Result 1043 states and 3444 transitions. [2021-10-07 15:09:59,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:09:59,353 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 15:09:59,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:59,355 INFO L225 Difference]: With dead ends: 1043 [2021-10-07 15:09:59,355 INFO L226 Difference]: Without dead ends: 1043 [2021-10-07 15:09:59,355 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 786.1ms TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:09:59,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2021-10-07 15:09:59,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 974. [2021-10-07 15:09:59,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 960 states have (on average 3.4375) internal successors, (3300), 973 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:59,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 3300 transitions. [2021-10-07 15:09:59,376 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 3300 transitions. Word has length 18 [2021-10-07 15:09:59,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:59,376 INFO L470 AbstractCegarLoop]: Abstraction has 974 states and 3300 transitions. [2021-10-07 15:09:59,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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) [2021-10-07 15:09:59,377 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 3300 transitions. [2021-10-07 15:09:59,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:09:59,378 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:59,378 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:59,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-10-07 15:09:59,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:59,592 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:09:59,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:59,592 INFO L82 PathProgramCache]: Analyzing trace with hash -410231240, now seen corresponding path program 3 times [2021-10-07 15:09:59,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:59,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544116993] [2021-10-07 15:09:59,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:59,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:00,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:10:00,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:00,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544116993] [2021-10-07 15:10:00,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544116993] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:00,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212284321] [2021-10-07 15:10:00,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:10:00,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:00,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:00,504 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) [2021-10-07 15:10:00,505 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 [2021-10-07 15:10:01,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-07 15:10:01,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:10:01,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 15:10:01,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:01,314 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-07 15:10:01,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 55 [2021-10-07 15:10:02,331 INFO L354 Elim1Store]: treesize reduction 152, result has 32.4 percent of original size [2021-10-07 15:10:02,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 60 treesize of output 116 [2021-10-07 15:10:02,690 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:10:02,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-10-07 15:10:02,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:10:02,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212284321] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:10:02,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:10:02,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 14 [2021-10-07 15:10:02,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556736392] [2021-10-07 15:10:02,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:10:02,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:02,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:10:02,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:10:02,738 INFO L87 Difference]: Start difference. First operand 974 states and 3300 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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) [2021-10-07 15:10:02,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:02,985 INFO L93 Difference]: Finished difference Result 974 states and 3242 transitions. [2021-10-07 15:10:02,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:10:02,985 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 15:10:02,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:02,988 INFO L225 Difference]: With dead ends: 974 [2021-10-07 15:10:02,988 INFO L226 Difference]: Without dead ends: 974 [2021-10-07 15:10:02,988 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 526.5ms TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:10:02,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2021-10-07 15:10:03,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 826. [2021-10-07 15:10:03,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 812 states have (on average 3.2992610837438425) internal successors, (2679), 825 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:03,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 2679 transitions. [2021-10-07 15:10:03,016 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 2679 transitions. Word has length 18 [2021-10-07 15:10:03,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:03,016 INFO L470 AbstractCegarLoop]: Abstraction has 826 states and 2679 transitions. [2021-10-07 15:10:03,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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) [2021-10-07 15:10:03,017 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 2679 transitions. [2021-10-07 15:10:03,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:10:03,018 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:03,018 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:10:03,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-10-07 15:10:03,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:03,220 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:10:03,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:03,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1600020112, now seen corresponding path program 1 times [2021-10-07 15:10:03,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:03,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170405733] [2021-10-07 15:10:03,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:03,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:03,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:10:03,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:03,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170405733] [2021-10-07 15:10:03,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170405733] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:03,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092466788] [2021-10-07 15:10:03,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:03,299 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:03,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:03,300 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) [2021-10-07 15:10:03,325 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 [2021-10-07 15:10:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:03,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:10:03,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:04,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:10:04,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092466788] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:10:04,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:10:04,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2021-10-07 15:10:04,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220110947] [2021-10-07 15:10:04,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:10:04,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:04,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:10:04,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:10:04,018 INFO L87 Difference]: Start difference. First operand 826 states and 2679 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:04,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:04,066 INFO L93 Difference]: Finished difference Result 1328 states and 4477 transitions. [2021-10-07 15:10:04,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:10:04,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 15:10:04,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:04,069 INFO L225 Difference]: With dead ends: 1328 [2021-10-07 15:10:04,069 INFO L226 Difference]: Without dead ends: 982 [2021-10-07 15:10:04,070 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 30.3ms TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:10:04,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2021-10-07 15:10:04,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 670. [2021-10-07 15:10:04,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 658 states have (on average 4.127659574468085) internal successors, (2716), 669 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:04,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 2716 transitions. [2021-10-07 15:10:04,086 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 2716 transitions. Word has length 18 [2021-10-07 15:10:04,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:04,086 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 2716 transitions. [2021-10-07 15:10:04,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:04,086 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 2716 transitions. [2021-10-07 15:10:04,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:10:04,087 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:04,087 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:10:04,114 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 [2021-10-07 15:10:04,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:04,288 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:10:04,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:04,289 INFO L82 PathProgramCache]: Analyzing trace with hash -629886460, now seen corresponding path program 1 times [2021-10-07 15:10:04,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:04,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916058621] [2021-10-07 15:10:04,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:04,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:04,625 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:10:04,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:04,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916058621] [2021-10-07 15:10:04,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916058621] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:04,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396248485] [2021-10-07 15:10:04,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:04,626 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:04,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:04,627 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) [2021-10-07 15:10:04,629 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 [2021-10-07 15:10:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:05,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-07 15:10:05,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:05,677 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-07 15:10:05,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 13 [2021-10-07 15:10:05,702 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:10:05,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396248485] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:05,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:05,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 15:10:05,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189985784] [2021-10-07 15:10:05,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 15:10:05,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:05,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 15:10:05,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:10:05,704 INFO L87 Difference]: Start difference. First operand 670 states and 2716 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 15:10:06,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:06,785 INFO L93 Difference]: Finished difference Result 1001 states and 3582 transitions. [2021-10-07 15:10:06,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:10:06,786 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 18 [2021-10-07 15:10:06,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:06,789 INFO L225 Difference]: With dead ends: 1001 [2021-10-07 15:10:06,789 INFO L226 Difference]: Without dead ends: 1001 [2021-10-07 15:10:06,791 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 806.2ms TimeCoverageRelationStatistics Valid=130, Invalid=926, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 15:10:06,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2021-10-07 15:10:06,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 809. [2021-10-07 15:10:06,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 797 states have (on average 3.905897114178168) internal successors, (3113), 808 states have internal predecessors, (3113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:06,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 3113 transitions. [2021-10-07 15:10:06,820 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 3113 transitions. Word has length 18 [2021-10-07 15:10:06,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:06,820 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 3113 transitions. [2021-10-07 15:10:06,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 15:10:06,820 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 3113 transitions. [2021-10-07 15:10:06,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:10:06,821 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:06,821 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:10:06,863 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 [2021-10-07 15:10:07,035 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,SelfDestructingSolverStorable46 [2021-10-07 15:10:07,036 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:10:07,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:07,036 INFO L82 PathProgramCache]: Analyzing trace with hash -629886505, now seen corresponding path program 1 times [2021-10-07 15:10:07,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:07,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006512935] [2021-10-07 15:10:07,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:07,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:07,414 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:10:07,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:07,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006512935] [2021-10-07 15:10:07,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006512935] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:07,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690439778] [2021-10-07 15:10:07,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:07,416 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:07,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:07,417 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) [2021-10-07 15:10:07,418 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 [2021-10-07 15:10:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:08,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-07 15:10:08,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:08,422 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-07 15:10:08,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 13 [2021-10-07 15:10:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:10:08,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690439778] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:08,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:08,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 15:10:08,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588701676] [2021-10-07 15:10:08,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 15:10:08,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:08,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 15:10:08,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:10:08,452 INFO L87 Difference]: Start difference. First operand 809 states and 3113 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 15:10:09,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:09,415 INFO L93 Difference]: Finished difference Result 950 states and 3452 transitions. [2021-10-07 15:10:09,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:10:09,416 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 18 [2021-10-07 15:10:09,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:09,419 INFO L225 Difference]: With dead ends: 950 [2021-10-07 15:10:09,419 INFO L226 Difference]: Without dead ends: 938 [2021-10-07 15:10:09,420 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 776.9ms TimeCoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:10:09,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2021-10-07 15:10:09,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 801. [2021-10-07 15:10:09,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 789 states have (on average 3.899873257287706) internal successors, (3077), 800 states have internal predecessors, (3077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:09,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 3077 transitions. [2021-10-07 15:10:09,435 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 3077 transitions. Word has length 18 [2021-10-07 15:10:09,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:09,436 INFO L470 AbstractCegarLoop]: Abstraction has 801 states and 3077 transitions. [2021-10-07 15:10:09,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 15:10:09,436 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 3077 transitions. [2021-10-07 15:10:09,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:10:09,437 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:09,437 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:10:09,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-10-07 15:10:09,639 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,SelfDestructingSolverStorable47 [2021-10-07 15:10:09,639 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:10:09,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:09,640 INFO L82 PathProgramCache]: Analyzing trace with hash -641908570, now seen corresponding path program 2 times [2021-10-07 15:10:09,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:09,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729003132] [2021-10-07 15:10:09,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:09,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:10,032 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:10:10,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:10,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729003132] [2021-10-07 15:10:10,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729003132] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:10,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542268758] [2021-10-07 15:10:10,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:10:10,034 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:10,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:10,036 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) [2021-10-07 15:10:10,036 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 [2021-10-07 15:10:10,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:10:10,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:10:10,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-07 15:10:10,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:11,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-07 15:10:11,102 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:10:11,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-07 15:10:11,206 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:10:11,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-07 15:10:11,610 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:10:11,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542268758] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:11,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:11,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 19 [2021-10-07 15:10:11,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766286173] [2021-10-07 15:10:11,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 15:10:11,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:11,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 15:10:11,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:10:11,613 INFO L87 Difference]: Start difference. First operand 801 states and 3077 transitions. Second operand has 21 states, 20 states have (on average 1.75) internal successors, (35), 20 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) [2021-10-07 15:10:15,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:15,061 INFO L93 Difference]: Finished difference Result 1065 states and 3725 transitions. [2021-10-07 15:10:15,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 15:10:15,061 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.75) internal successors, (35), 20 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 18 [2021-10-07 15:10:15,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:15,064 INFO L225 Difference]: With dead ends: 1065 [2021-10-07 15:10:15,064 INFO L226 Difference]: Without dead ends: 1065 [2021-10-07 15:10:15,065 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 2608.3ms TimeCoverageRelationStatistics Valid=234, Invalid=1928, Unknown=0, NotChecked=0, Total=2162 [2021-10-07 15:10:15,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2021-10-07 15:10:15,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 907. [2021-10-07 15:10:15,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 895 states have (on average 3.7944134078212293) internal successors, (3396), 906 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:15,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 3396 transitions. [2021-10-07 15:10:15,090 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 3396 transitions. Word has length 18 [2021-10-07 15:10:15,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:15,090 INFO L470 AbstractCegarLoop]: Abstraction has 907 states and 3396 transitions. [2021-10-07 15:10:15,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.75) internal successors, (35), 20 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) [2021-10-07 15:10:15,091 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 3396 transitions. [2021-10-07 15:10:15,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:10:15,092 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:15,092 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:10:15,121 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 [2021-10-07 15:10:15,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:15,296 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:10:15,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:15,298 INFO L82 PathProgramCache]: Analyzing trace with hash -641908615, now seen corresponding path program 2 times [2021-10-07 15:10:15,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:15,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811918717] [2021-10-07 15:10:15,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:15,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:15,792 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:10:15,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:15,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811918717] [2021-10-07 15:10:15,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811918717] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:15,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386189961] [2021-10-07 15:10:15,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:10:15,794 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:15,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:15,795 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) [2021-10-07 15:10:15,800 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 [2021-10-07 15:10:16,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:10:16,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:10:16,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-07 15:10:16,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:16,726 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-07 15:10:16,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 169 treesize of output 191 [2021-10-07 15:10:19,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:10:19,222 INFO L354 Elim1Store]: treesize reduction 136, result has 34.9 percent of original size [2021-10-07 15:10:19,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 72 treesize of output 128 [2021-10-07 15:10:19,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-07 15:10:19,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-10-07 15:10:19,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:10:19,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:10:19,832 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-07 15:10:19,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2021-10-07 15:10:19,864 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:10:19,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386189961] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:19,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:19,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 21 [2021-10-07 15:10:19,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35468488] [2021-10-07 15:10:19,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:10:19,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:19,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:10:19,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:10:19,867 INFO L87 Difference]: Start difference. First operand 907 states and 3396 transitions. Second operand has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 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) [2021-10-07 15:10:23,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:23,143 INFO L93 Difference]: Finished difference Result 3571 states and 12419 transitions. [2021-10-07 15:10:23,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 15:10:23,144 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 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 18 [2021-10-07 15:10:23,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:23,153 INFO L225 Difference]: With dead ends: 3571 [2021-10-07 15:10:23,153 INFO L226 Difference]: Without dead ends: 3539 [2021-10-07 15:10:23,154 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 2533.9ms TimeCoverageRelationStatistics Valid=319, Invalid=1843, Unknown=0, NotChecked=0, Total=2162 [2021-10-07 15:10:23,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3539 states. [2021-10-07 15:10:23,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3539 to 1548. [2021-10-07 15:10:23,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1548 states, 1536 states have (on average 4.190104166666667) internal successors, (6436), 1547 states have internal predecessors, (6436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:23,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 6436 transitions. [2021-10-07 15:10:23,205 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 6436 transitions. Word has length 18 [2021-10-07 15:10:23,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:23,206 INFO L470 AbstractCegarLoop]: Abstraction has 1548 states and 6436 transitions. [2021-10-07 15:10:23,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 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) [2021-10-07 15:10:23,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 6436 transitions. [2021-10-07 15:10:23,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:10:23,207 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:23,207 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:10:23,250 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 [2021-10-07 15:10:23,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-10-07 15:10:23,423 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:10:23,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:23,424 INFO L82 PathProgramCache]: Analyzing trace with hash -641860565, now seen corresponding path program 1 times [2021-10-07 15:10:23,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:23,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410987725] [2021-10-07 15:10:23,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:23,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:23,885 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:10:23,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:23,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410987725] [2021-10-07 15:10:23,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410987725] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:23,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857324394] [2021-10-07 15:10:23,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:23,887 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:23,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:23,888 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) [2021-10-07 15:10:23,889 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 [2021-10-07 15:10:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:24,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-07 15:10:24,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:24,848 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-07 15:10:24,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 257 treesize of output 271 [2021-10-07 15:10:27,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:10:27,567 INFO L354 Elim1Store]: treesize reduction 136, result has 34.9 percent of original size [2021-10-07 15:10:27,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 72 treesize of output 128 [2021-10-07 15:10:27,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-07 15:10:27,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-10-07 15:10:27,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:10:27,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:10:28,395 INFO L354 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2021-10-07 15:10:28,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 25 [2021-10-07 15:10:28,434 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:10:28,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857324394] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:28,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:28,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 22 [2021-10-07 15:10:28,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712153950] [2021-10-07 15:10:28,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:10:28,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:28,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:10:28,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:10:28,437 INFO L87 Difference]: Start difference. First operand 1548 states and 6436 transitions. Second operand has 24 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 23 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) [2021-10-07 15:10:32,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:32,027 INFO L93 Difference]: Finished difference Result 4849 states and 17597 transitions. [2021-10-07 15:10:32,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 15:10:32,028 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 23 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 18 [2021-10-07 15:10:32,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:32,041 INFO L225 Difference]: With dead ends: 4849 [2021-10-07 15:10:32,042 INFO L226 Difference]: Without dead ends: 4849 [2021-10-07 15:10:32,042 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 2977.7ms TimeCoverageRelationStatistics Valid=356, Invalid=2094, Unknown=0, NotChecked=0, Total=2450 [2021-10-07 15:10:32,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4849 states. [2021-10-07 15:10:32,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4849 to 2840. [2021-10-07 15:10:32,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2840 states, 2818 states have (on average 4.1554293825408095) internal successors, (11710), 2839 states have internal predecessors, (11710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:32,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2840 states to 2840 states and 11710 transitions. [2021-10-07 15:10:32,178 INFO L78 Accepts]: Start accepts. Automaton has 2840 states and 11710 transitions. Word has length 18 [2021-10-07 15:10:32,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:32,178 INFO L470 AbstractCegarLoop]: Abstraction has 2840 states and 11710 transitions. [2021-10-07 15:10:32,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 23 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) [2021-10-07 15:10:32,179 INFO L276 IsEmpty]: Start isEmpty. Operand 2840 states and 11710 transitions. [2021-10-07 15:10:32,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:10:32,181 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:32,181 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:10:32,238 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 [2021-10-07 15:10:32,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:32,397 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:10:32,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:32,398 INFO L82 PathProgramCache]: Analyzing trace with hash -583710455, now seen corresponding path program 2 times [2021-10-07 15:10:32,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:32,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772710076] [2021-10-07 15:10:32,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:32,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:32,747 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:10:32,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:32,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772710076] [2021-10-07 15:10:32,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772710076] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:32,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477453356] [2021-10-07 15:10:32,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:10:32,748 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:32,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:32,749 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) [2021-10-07 15:10:32,772 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 [2021-10-07 15:10:33,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:10:33,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:10:33,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-07 15:10:33,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:33,719 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-07 15:10:33,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 403 treesize of output 425 [2021-10-07 15:10:35,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:10:35,711 INFO L354 Elim1Store]: treesize reduction 136, result has 34.9 percent of original size [2021-10-07 15:10:35,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 72 treesize of output 128 [2021-10-07 15:10:35,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-07 15:10:35,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-10-07 15:10:35,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:10:35,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:10:36,526 INFO L354 Elim1Store]: treesize reduction 46, result has 6.1 percent of original size [2021-10-07 15:10:36,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 43 [2021-10-07 15:10:36,564 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:10:36,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477453356] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:36,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:36,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 21 [2021-10-07 15:10:36,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480225483] [2021-10-07 15:10:36,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:10:36,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:36,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:10:36,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:10:36,566 INFO L87 Difference]: Start difference. First operand 2840 states and 11710 transitions. Second operand has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 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) [2021-10-07 15:10:38,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:38,565 INFO L93 Difference]: Finished difference Result 3729 states and 14705 transitions. [2021-10-07 15:10:38,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:10:38,566 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 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 18 [2021-10-07 15:10:38,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:38,576 INFO L225 Difference]: With dead ends: 3729 [2021-10-07 15:10:38,576 INFO L226 Difference]: Without dead ends: 3729 [2021-10-07 15:10:38,576 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1472.2ms TimeCoverageRelationStatistics Valid=157, Invalid=1103, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 15:10:38,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3729 states. [2021-10-07 15:10:38,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3729 to 3039. [2021-10-07 15:10:38,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3039 states, 3017 states have (on average 4.10540271793172) internal successors, (12386), 3038 states have internal predecessors, (12386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:38,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3039 states to 3039 states and 12386 transitions. [2021-10-07 15:10:38,678 INFO L78 Accepts]: Start accepts. Automaton has 3039 states and 12386 transitions. Word has length 18 [2021-10-07 15:10:38,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:38,679 INFO L470 AbstractCegarLoop]: Abstraction has 3039 states and 12386 transitions. [2021-10-07 15:10:38,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 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) [2021-10-07 15:10:38,679 INFO L276 IsEmpty]: Start isEmpty. Operand 3039 states and 12386 transitions. [2021-10-07 15:10:38,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:10:38,681 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:38,681 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:10:38,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-10-07 15:10:38,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:38,896 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:10:38,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:38,896 INFO L82 PathProgramCache]: Analyzing trace with hash -647529864, now seen corresponding path program 3 times [2021-10-07 15:10:38,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:38,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548140925] [2021-10-07 15:10:38,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:38,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:40,044 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:40,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:40,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548140925] [2021-10-07 15:10:40,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548140925] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:40,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559260105] [2021-10-07 15:10:40,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:10:40,046 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:40,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:40,047 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) [2021-10-07 15:10:40,049 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 [2021-10-07 15:10:40,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:10:40,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:10:40,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 56 conjunts are in the unsatisfiable core [2021-10-07 15:10:40,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:40,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 83 [2021-10-07 15:10:41,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-07 15:10:41,388 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:10:41,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2021-10-07 15:10:41,680 INFO L354 Elim1Store]: treesize reduction 92, result has 20.0 percent of original size [2021-10-07 15:10:41,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 55 [2021-10-07 15:10:46,121 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:10:46,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559260105] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:46,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:46,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 24 [2021-10-07 15:10:46,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951434653] [2021-10-07 15:10:46,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 15:10:46,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:46,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 15:10:46,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=587, Unknown=2, NotChecked=0, Total=650 [2021-10-07 15:10:46,123 INFO L87 Difference]: Start difference. First operand 3039 states and 12386 transitions. Second operand has 26 states, 25 states have (on average 1.44) internal successors, (36), 25 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) [2021-10-07 15:11:26,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:26,158 INFO L93 Difference]: Finished difference Result 3395 states and 13440 transitions. [2021-10-07 15:11:26,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:11:26,159 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.44) internal successors, (36), 25 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 18 [2021-10-07 15:11:26,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:26,168 INFO L225 Difference]: With dead ends: 3395 [2021-10-07 15:11:26,168 INFO L226 Difference]: Without dead ends: 3395 [2021-10-07 15:11:26,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 15058.3ms TimeCoverageRelationStatistics Valid=186, Invalid=1789, Unknown=5, NotChecked=0, Total=1980 [2021-10-07 15:11:26,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3395 states. [2021-10-07 15:11:26,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3395 to 3112. [2021-10-07 15:11:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3112 states, 3090 states have (on average 4.085113268608414) internal successors, (12623), 3111 states have internal predecessors, (12623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:26,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3112 states to 3112 states and 12623 transitions. [2021-10-07 15:11:26,241 INFO L78 Accepts]: Start accepts. Automaton has 3112 states and 12623 transitions. Word has length 18 [2021-10-07 15:11:26,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:26,241 INFO L470 AbstractCegarLoop]: Abstraction has 3112 states and 12623 transitions. [2021-10-07 15:11:26,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.44) internal successors, (36), 25 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) [2021-10-07 15:11:26,242 INFO L276 IsEmpty]: Start isEmpty. Operand 3112 states and 12623 transitions. [2021-10-07 15:11:26,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:11:26,243 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:26,244 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:26,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2021-10-07 15:11:26,458 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,SelfDestructingSolverStorable52 [2021-10-07 15:11:26,459 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:11:26,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:26,459 INFO L82 PathProgramCache]: Analyzing trace with hash -647529909, now seen corresponding path program 3 times [2021-10-07 15:11:26,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:26,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977141142] [2021-10-07 15:11:26,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:26,460 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:26,781 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:11:26,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:26,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977141142] [2021-10-07 15:11:26,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977141142] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:26,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576735705] [2021-10-07 15:11:26,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:11:26,782 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:26,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:26,785 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) [2021-10-07 15:11:26,805 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 [2021-10-07 15:11:27,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:11:27,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:27,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-07 15:11:27,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:27,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 83 [2021-10-07 15:11:28,126 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:11:28,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-07 15:11:28,400 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-10-07 15:11:28,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 27 [2021-10-07 15:11:28,433 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:11:28,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576735705] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:28,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:28,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 15:11:28,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12563641] [2021-10-07 15:11:28,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 15:11:28,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:28,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 15:11:28,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:11:28,435 INFO L87 Difference]: Start difference. First operand 3112 states and 12623 transitions. Second operand has 22 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-07 15:11:29,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:29,766 INFO L93 Difference]: Finished difference Result 4405 states and 16472 transitions. [2021-10-07 15:11:29,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:11:29,767 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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 18 [2021-10-07 15:11:29,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:29,783 INFO L225 Difference]: With dead ends: 4405 [2021-10-07 15:11:29,783 INFO L226 Difference]: Without dead ends: 4405 [2021-10-07 15:11:29,784 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1072.9ms TimeCoverageRelationStatistics Valid=179, Invalid=1081, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 15:11:29,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4405 states. [2021-10-07 15:11:29,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4405 to 3212. [2021-10-07 15:11:29,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3212 states, 3190 states have (on average 4.049529780564264) internal successors, (12918), 3211 states have internal predecessors, (12918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:29,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3212 states to 3212 states and 12918 transitions. [2021-10-07 15:11:29,871 INFO L78 Accepts]: Start accepts. Automaton has 3212 states and 12918 transitions. Word has length 18 [2021-10-07 15:11:29,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:29,871 INFO L470 AbstractCegarLoop]: Abstraction has 3212 states and 12918 transitions. [2021-10-07 15:11:29,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-07 15:11:29,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3212 states and 12918 transitions. [2021-10-07 15:11:29,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:11:29,873 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:29,873 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:29,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2021-10-07 15:11:30,073 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,SelfDestructingSolverStorable53 [2021-10-07 15:11:30,074 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:11:30,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:30,074 INFO L82 PathProgramCache]: Analyzing trace with hash 593640921, now seen corresponding path program 3 times [2021-10-07 15:11:30,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:30,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639317393] [2021-10-07 15:11:30,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:30,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:30,569 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:11:30,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:30,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639317393] [2021-10-07 15:11:30,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639317393] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:30,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6232090] [2021-10-07 15:11:30,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:11:30,570 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:30,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:30,571 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) [2021-10-07 15:11:30,588 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 [2021-10-07 15:11:31,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:11:31,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:31,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-07 15:11:31,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:31,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 150 [2021-10-07 15:11:31,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:11:31,983 INFO L354 Elim1Store]: treesize reduction 75, result has 24.2 percent of original size [2021-10-07 15:11:31,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 41 [2021-10-07 15:11:32,312 INFO L354 Elim1Store]: treesize reduction 38, result has 7.3 percent of original size [2021-10-07 15:11:32,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 38 [2021-10-07 15:11:32,350 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:11:32,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6232090] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:32,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:32,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 15:11:32,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688406513] [2021-10-07 15:11:32,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 15:11:32,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:32,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 15:11:32,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:11:32,353 INFO L87 Difference]: Start difference. First operand 3212 states and 12918 transitions. Second operand has 22 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-07 15:11:35,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:35,103 INFO L93 Difference]: Finished difference Result 7039 states and 26971 transitions. [2021-10-07 15:11:35,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:11:35,103 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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 18 [2021-10-07 15:11:35,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:35,123 INFO L225 Difference]: With dead ends: 7039 [2021-10-07 15:11:35,123 INFO L226 Difference]: Without dead ends: 7039 [2021-10-07 15:11:35,123 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 1723.8ms TimeCoverageRelationStatistics Valid=247, Invalid=1475, Unknown=0, NotChecked=0, Total=1722 [2021-10-07 15:11:35,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7039 states. [2021-10-07 15:11:35,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7039 to 4135. [2021-10-07 15:11:35,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4135 states, 4113 states have (on average 4.221249696085582) internal successors, (17362), 4134 states have internal predecessors, (17362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:35,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4135 states to 4135 states and 17362 transitions. [2021-10-07 15:11:35,237 INFO L78 Accepts]: Start accepts. Automaton has 4135 states and 17362 transitions. Word has length 18 [2021-10-07 15:11:35,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:35,238 INFO L470 AbstractCegarLoop]: Abstraction has 4135 states and 17362 transitions. [2021-10-07 15:11:35,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-07 15:11:35,238 INFO L276 IsEmpty]: Start isEmpty. Operand 4135 states and 17362 transitions. [2021-10-07 15:11:35,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:11:35,240 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:35,240 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:35,276 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 [2021-10-07 15:11:35,453 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,SelfDestructingSolverStorable54 [2021-10-07 15:11:35,453 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:11:35,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:35,454 INFO L82 PathProgramCache]: Analyzing trace with hash 2131034263, now seen corresponding path program 4 times [2021-10-07 15:11:35,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:35,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536770736] [2021-10-07 15:11:35,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:35,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:36,527 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:11:36,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:36,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536770736] [2021-10-07 15:11:36,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536770736] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:36,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748859569] [2021-10-07 15:11:36,528 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:11:36,529 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:36,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:36,530 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) [2021-10-07 15:11:36,531 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 [2021-10-07 15:11:37,486 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:11:37,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:37,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-07 15:11:37,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:37,637 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-07 15:11:37,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 108 [2021-10-07 15:11:39,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:11:39,698 INFO L354 Elim1Store]: treesize reduction 136, result has 34.9 percent of original size [2021-10-07 15:11:39,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 72 treesize of output 128 [2021-10-07 15:11:39,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-07 15:11:39,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-10-07 15:11:40,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:11:40,244 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:11:40,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-07 15:11:40,711 INFO L354 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2021-10-07 15:11:40,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 31 [2021-10-07 15:11:40,760 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:11:40,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748859569] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:40,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:40,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 25 [2021-10-07 15:11:40,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232073631] [2021-10-07 15:11:40,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-07 15:11:40,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:40,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-07 15:11:40,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:11:40,763 INFO L87 Difference]: Start difference. First operand 4135 states and 17362 transitions. Second operand has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 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) [2021-10-07 15:11:44,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:44,792 INFO L93 Difference]: Finished difference Result 4661 states and 16928 transitions. [2021-10-07 15:11:44,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-07 15:11:44,792 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 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 18 [2021-10-07 15:11:44,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:44,805 INFO L225 Difference]: With dead ends: 4661 [2021-10-07 15:11:44,805 INFO L226 Difference]: Without dead ends: 4651 [2021-10-07 15:11:44,805 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 3622.6ms TimeCoverageRelationStatistics Valid=437, Invalid=2755, Unknown=0, NotChecked=0, Total=3192 [2021-10-07 15:11:44,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4651 states. [2021-10-07 15:11:44,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4651 to 3046. [2021-10-07 15:11:44,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3046 states, 3022 states have (on average 4.050959629384513) internal successors, (12242), 3045 states have internal predecessors, (12242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:44,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3046 states to 3046 states and 12242 transitions. [2021-10-07 15:11:44,884 INFO L78 Accepts]: Start accepts. Automaton has 3046 states and 12242 transitions. Word has length 18 [2021-10-07 15:11:44,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:44,884 INFO L470 AbstractCegarLoop]: Abstraction has 3046 states and 12242 transitions. [2021-10-07 15:11:44,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 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) [2021-10-07 15:11:44,884 INFO L276 IsEmpty]: Start isEmpty. Operand 3046 states and 12242 transitions. [2021-10-07 15:11:44,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:11:44,885 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:44,885 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:44,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:45,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:45,086 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:11:45,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:45,087 INFO L82 PathProgramCache]: Analyzing trace with hash 2129602373, now seen corresponding path program 4 times [2021-10-07 15:11:45,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:45,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526311127] [2021-10-07 15:11:45,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:45,088 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:45,495 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:11:45,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:45,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526311127] [2021-10-07 15:11:45,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526311127] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:45,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696608088] [2021-10-07 15:11:45,496 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:11:45,496 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:45,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:45,501 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) [2021-10-07 15:11:45,520 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 [2021-10-07 15:11:46,465 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:11:46,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:46,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-07 15:11:46,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:46,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-07 15:11:46,978 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:11:46,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696608088] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:46,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:46,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 19 [2021-10-07 15:11:46,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099107391] [2021-10-07 15:11:46,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 15:11:46,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:46,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 15:11:46,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:11:46,981 INFO L87 Difference]: Start difference. First operand 3046 states and 12242 transitions. Second operand has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 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) [2021-10-07 15:11:48,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:48,614 INFO L93 Difference]: Finished difference Result 4809 states and 16973 transitions. [2021-10-07 15:11:48,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:11:48,615 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 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 18 [2021-10-07 15:11:48,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:48,628 INFO L225 Difference]: With dead ends: 4809 [2021-10-07 15:11:48,628 INFO L226 Difference]: Without dead ends: 4809 [2021-10-07 15:11:48,629 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1167.5ms TimeCoverageRelationStatistics Valid=196, Invalid=994, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 15:11:48,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4809 states. [2021-10-07 15:11:48,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4809 to 3215. [2021-10-07 15:11:48,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3215 states, 3191 states have (on average 4.0131620181761205) internal successors, (12806), 3214 states have internal predecessors, (12806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:48,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 12806 transitions. [2021-10-07 15:11:48,775 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 12806 transitions. Word has length 18 [2021-10-07 15:11:48,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:48,775 INFO L470 AbstractCegarLoop]: Abstraction has 3215 states and 12806 transitions. [2021-10-07 15:11:48,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 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) [2021-10-07 15:11:48,776 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 12806 transitions. [2021-10-07 15:11:48,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:11:48,781 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:48,781 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:48,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:48,989 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,SelfDestructingSolverStorable56 [2021-10-07 15:11:48,990 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:11:48,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:48,990 INFO L82 PathProgramCache]: Analyzing trace with hash -331333646, now seen corresponding path program 3 times [2021-10-07 15:11:48,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:48,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221632531] [2021-10-07 15:11:48,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:48,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:49,733 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:11:49,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:49,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221632531] [2021-10-07 15:11:49,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221632531] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:49,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499587500] [2021-10-07 15:11:49,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:11:49,734 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:49,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:49,735 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) [2021-10-07 15:11:49,736 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 [2021-10-07 15:11:50,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:11:50,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:50,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-07 15:11:50,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:51,388 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-07 15:11:51,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2021-10-07 15:11:51,422 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:11:51,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499587500] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:51,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:51,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 21 [2021-10-07 15:11:51,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981795498] [2021-10-07 15:11:51,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:11:51,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:51,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:11:51,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:11:51,424 INFO L87 Difference]: Start difference. First operand 3215 states and 12806 transitions. Second operand has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 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) [2021-10-07 15:11:53,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:53,817 INFO L93 Difference]: Finished difference Result 4656 states and 16045 transitions. [2021-10-07 15:11:53,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 15:11:53,819 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 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 19 [2021-10-07 15:11:53,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:53,837 INFO L225 Difference]: With dead ends: 4656 [2021-10-07 15:11:53,837 INFO L226 Difference]: Without dead ends: 4628 [2021-10-07 15:11:53,837 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1867.9ms TimeCoverageRelationStatistics Valid=282, Invalid=1524, Unknown=0, NotChecked=0, Total=1806 [2021-10-07 15:11:53,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4628 states. [2021-10-07 15:11:53,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4628 to 3303. [2021-10-07 15:11:53,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3279 states have (on average 3.713632204940531) internal successors, (12177), 3302 states have internal predecessors, (12177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:53,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 12177 transitions. [2021-10-07 15:11:53,997 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 12177 transitions. Word has length 19 [2021-10-07 15:11:53,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:53,998 INFO L470 AbstractCegarLoop]: Abstraction has 3303 states and 12177 transitions. [2021-10-07 15:11:53,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 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) [2021-10-07 15:11:53,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 12177 transitions. [2021-10-07 15:11:54,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:11:54,000 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:54,001 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:54,045 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 [2021-10-07 15:11:54,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:54,214 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:11:54,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:54,215 INFO L82 PathProgramCache]: Analyzing trace with hash -332765536, now seen corresponding path program 4 times [2021-10-07 15:11:54,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:54,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596088235] [2021-10-07 15:11:54,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:54,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:54,611 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:11:54,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:54,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596088235] [2021-10-07 15:11:54,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596088235] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:54,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035838602] [2021-10-07 15:11:54,613 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:11:54,613 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:54,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:54,615 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) [2021-10-07 15:11:54,616 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 [2021-10-07 15:11:55,662 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:11:55,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:55,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-07 15:11:55,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:55,809 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-07 15:11:55,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 108 [2021-10-07 15:11:57,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:11:57,965 INFO L354 Elim1Store]: treesize reduction 136, result has 34.9 percent of original size [2021-10-07 15:11:57,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 72 treesize of output 128 [2021-10-07 15:11:58,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-07 15:11:58,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-07 15:11:58,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-10-07 15:11:58,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:11:58,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:11:58,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-10-07 15:11:58,621 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:11:58,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035838602] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:58,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:58,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 21 [2021-10-07 15:11:58,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201450454] [2021-10-07 15:11:58,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:11:58,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:58,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:11:58,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:11:58,624 INFO L87 Difference]: Start difference. First operand 3303 states and 12177 transitions. Second operand has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 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) [2021-10-07 15:12:00,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:00,207 INFO L93 Difference]: Finished difference Result 3887 states and 13231 transitions. [2021-10-07 15:12:00,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:12:00,207 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 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 19 [2021-10-07 15:12:00,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:00,217 INFO L225 Difference]: With dead ends: 3887 [2021-10-07 15:12:00,217 INFO L226 Difference]: Without dead ends: 3871 [2021-10-07 15:12:00,218 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 1443.6ms TimeCoverageRelationStatistics Valid=166, Invalid=1240, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 15:12:00,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3871 states. [2021-10-07 15:12:00,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3871 to 3207. [2021-10-07 15:12:00,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3207 states, 3183 states have (on average 3.6786050895381717) internal successors, (11709), 3206 states have internal predecessors, (11709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:00,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 11709 transitions. [2021-10-07 15:12:00,331 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 11709 transitions. Word has length 19 [2021-10-07 15:12:00,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:00,331 INFO L470 AbstractCegarLoop]: Abstraction has 3207 states and 11709 transitions. [2021-10-07 15:12:00,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 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) [2021-10-07 15:12:00,332 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 11709 transitions. [2021-10-07 15:12:00,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:12:00,333 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:00,334 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:00,376 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 [2021-10-07 15:12:00,548 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,SelfDestructingSolverStorable58 [2021-10-07 15:12:00,549 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:12:00,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:00,550 INFO L82 PathProgramCache]: Analyzing trace with hash -273183536, now seen corresponding path program 4 times [2021-10-07 15:12:00,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:00,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930279132] [2021-10-07 15:12:00,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:00,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:00,950 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:12:00,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:00,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930279132] [2021-10-07 15:12:00,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930279132] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:00,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015625226] [2021-10-07 15:12:00,951 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:12:00,951 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:00,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:00,952 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) [2021-10-07 15:12:00,954 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 [2021-10-07 15:12:02,046 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:12:02,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:02,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-07 15:12:02,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:02,195 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-07 15:12:02,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 108 [2021-10-07 15:12:03,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:12:04,170 INFO L354 Elim1Store]: treesize reduction 136, result has 34.9 percent of original size [2021-10-07 15:12:04,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 72 treesize of output 128 [2021-10-07 15:12:04,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-07 15:12:04,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-07 15:12:04,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-10-07 15:12:04,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:12:04,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:12:04,846 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-07 15:12:04,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 19 [2021-10-07 15:12:04,882 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:12:04,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015625226] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:04,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:04,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 22 [2021-10-07 15:12:04,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043360783] [2021-10-07 15:12:04,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:12:04,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:04,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:12:04,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:12:04,884 INFO L87 Difference]: Start difference. First operand 3207 states and 11709 transitions. Second operand has 24 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 23 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) [2021-10-07 15:12:06,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:06,176 INFO L93 Difference]: Finished difference Result 3458 states and 12319 transitions. [2021-10-07 15:12:06,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 15:12:06,176 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 23 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 19 [2021-10-07 15:12:06,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:06,185 INFO L225 Difference]: With dead ends: 3458 [2021-10-07 15:12:06,185 INFO L226 Difference]: Without dead ends: 3458 [2021-10-07 15:12:06,186 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1250.3ms TimeCoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 15:12:06,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3458 states. [2021-10-07 15:12:06,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3458 to 3251. [2021-10-07 15:12:06,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3251 states, 3227 states have (on average 3.6569569259374033) internal successors, (11801), 3250 states have internal predecessors, (11801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:06,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3251 states to 3251 states and 11801 transitions. [2021-10-07 15:12:06,280 INFO L78 Accepts]: Start accepts. Automaton has 3251 states and 11801 transitions. Word has length 19 [2021-10-07 15:12:06,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:06,280 INFO L470 AbstractCegarLoop]: Abstraction has 3251 states and 11801 transitions. [2021-10-07 15:12:06,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 23 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) [2021-10-07 15:12:06,281 INFO L276 IsEmpty]: Start isEmpty. Operand 3251 states and 11801 transitions. [2021-10-07 15:12:06,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:12:06,282 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:06,283 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:06,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-10-07 15:12:06,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-10-07 15:12:06,497 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:12:06,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:06,499 INFO L82 PathProgramCache]: Analyzing trace with hash -337002990, now seen corresponding path program 5 times [2021-10-07 15:12:06,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:06,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296432046] [2021-10-07 15:12:06,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:06,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:07,019 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:12:07,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:07,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296432046] [2021-10-07 15:12:07,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296432046] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:07,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835787739] [2021-10-07 15:12:07,021 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:12:07,021 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:07,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:07,022 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) [2021-10-07 15:12:07,024 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 [2021-10-07 15:12:08,170 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:12:08,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:08,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-07 15:12:08,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:08,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 954 treesize of output 938 [2021-10-07 15:12:08,435 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:12:08,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-07 15:12:08,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-07 15:12:08,564 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-07 15:12:08,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835787739] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:08,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:08,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 19 [2021-10-07 15:12:08,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328150954] [2021-10-07 15:12:08,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 15:12:08,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:08,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 15:12:08,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:12:08,566 INFO L87 Difference]: Start difference. First operand 3251 states and 11801 transitions. Second operand has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 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) [2021-10-07 15:12:11,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:11,416 INFO L93 Difference]: Finished difference Result 5440 states and 17636 transitions. [2021-10-07 15:12:11,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-07 15:12:11,416 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 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 19 [2021-10-07 15:12:11,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:11,429 INFO L225 Difference]: With dead ends: 5440 [2021-10-07 15:12:11,429 INFO L226 Difference]: Without dead ends: 5428 [2021-10-07 15:12:11,430 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 1750.9ms TimeCoverageRelationStatistics Valid=242, Invalid=2014, Unknown=0, NotChecked=0, Total=2256 [2021-10-07 15:12:11,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5428 states. [2021-10-07 15:12:11,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5428 to 3593. [2021-10-07 15:12:11,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3593 states, 3569 states have (on average 3.7397029980386662) internal successors, (13347), 3592 states have internal predecessors, (13347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:11,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 13347 transitions. [2021-10-07 15:12:11,516 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 13347 transitions. Word has length 19 [2021-10-07 15:12:11,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:11,516 INFO L470 AbstractCegarLoop]: Abstraction has 3593 states and 13347 transitions. [2021-10-07 15:12:11,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 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) [2021-10-07 15:12:11,517 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 13347 transitions. [2021-10-07 15:12:11,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:12:11,519 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:11,519 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:11,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2021-10-07 15:12:11,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:11,733 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:12:11,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:11,734 INFO L82 PathProgramCache]: Analyzing trace with hash 904167840, now seen corresponding path program 5 times [2021-10-07 15:12:11,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:11,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949105268] [2021-10-07 15:12:11,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:11,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:12,589 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:12:12,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:12,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949105268] [2021-10-07 15:12:12,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949105268] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:12,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520033367] [2021-10-07 15:12:12,590 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:12:12,590 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:12,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:12,591 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) [2021-10-07 15:12:12,592 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 [2021-10-07 15:12:13,789 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:12:13,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:13,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-07 15:12:13,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:13,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 133 [2021-10-07 15:12:14,052 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:12:14,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-07 15:12:14,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-10-07 15:12:14,233 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-07 15:12:14,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520033367] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:14,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:14,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 21 [2021-10-07 15:12:14,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505137434] [2021-10-07 15:12:14,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:12:14,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:14,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:12:14,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:12:14,236 INFO L87 Difference]: Start difference. First operand 3593 states and 13347 transitions. Second operand has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 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) [2021-10-07 15:12:16,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:16,956 INFO L93 Difference]: Finished difference Result 5912 states and 20831 transitions. [2021-10-07 15:12:16,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:12:16,956 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 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 19 [2021-10-07 15:12:16,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:16,981 INFO L225 Difference]: With dead ends: 5912 [2021-10-07 15:12:16,981 INFO L226 Difference]: Without dead ends: 5896 [2021-10-07 15:12:16,982 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 1391.3ms TimeCoverageRelationStatistics Valid=144, Invalid=1416, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 15:12:16,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5896 states. [2021-10-07 15:12:17,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5896 to 4207. [2021-10-07 15:12:17,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4207 states, 4181 states have (on average 3.8404687873714423) internal successors, (16057), 4206 states have internal predecessors, (16057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:17,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4207 states to 4207 states and 16057 transitions. [2021-10-07 15:12:17,207 INFO L78 Accepts]: Start accepts. Automaton has 4207 states and 16057 transitions. Word has length 19 [2021-10-07 15:12:17,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:17,207 INFO L470 AbstractCegarLoop]: Abstraction has 4207 states and 16057 transitions. [2021-10-07 15:12:17,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 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) [2021-10-07 15:12:17,208 INFO L276 IsEmpty]: Start isEmpty. Operand 4207 states and 16057 transitions. [2021-10-07 15:12:17,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:12:17,209 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:17,210 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:17,255 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 [2021-10-07 15:12:17,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:17,424 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:12:17,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:17,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1853454164, now seen corresponding path program 6 times [2021-10-07 15:12:17,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:17,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674050736] [2021-10-07 15:12:17,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:17,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:17,773 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:12:17,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:17,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674050736] [2021-10-07 15:12:17,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674050736] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:17,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106388212] [2021-10-07 15:12:17,775 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:12:17,775 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:17,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:17,777 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) [2021-10-07 15:12:17,778 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 [2021-10-07 15:12:18,981 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:12:18,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:18,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-07 15:12:18,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:19,465 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-10-07 15:12:19,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 27 [2021-10-07 15:12:19,494 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:12:19,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106388212] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:19,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:19,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 15:12:19,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384393844] [2021-10-07 15:12:19,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 15:12:19,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:19,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 15:12:19,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:12:19,496 INFO L87 Difference]: Start difference. First operand 4207 states and 16057 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 15:12:20,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:20,674 INFO L93 Difference]: Finished difference Result 2782 states and 9768 transitions. [2021-10-07 15:12:20,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:12:20,675 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 19 [2021-10-07 15:12:20,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:20,681 INFO L225 Difference]: With dead ends: 2782 [2021-10-07 15:12:20,681 INFO L226 Difference]: Without dead ends: 2754 [2021-10-07 15:12:20,681 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1092.8ms TimeCoverageRelationStatistics Valid=184, Invalid=872, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 15:12:20,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2021-10-07 15:12:20,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 1965. [2021-10-07 15:12:20,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1965 states, 1941 states have (on average 3.921689850592478) internal successors, (7612), 1964 states have internal predecessors, (7612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:20,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7612 transitions. [2021-10-07 15:12:20,788 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7612 transitions. Word has length 19 [2021-10-07 15:12:20,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:20,789 INFO L470 AbstractCegarLoop]: Abstraction has 1965 states and 7612 transitions. [2021-10-07 15:12:20,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-07 15:12:20,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7612 transitions. [2021-10-07 15:12:20,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:12:20,791 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:20,791 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:20,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-10-07 15:12:21,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:21,005 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:12:21,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:21,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1853348454, now seen corresponding path program 6 times [2021-10-07 15:12:21,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:21,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320172403] [2021-10-07 15:12:21,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:21,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:22,010 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:12:22,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:22,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320172403] [2021-10-07 15:12:22,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320172403] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:22,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54700726] [2021-10-07 15:12:22,012 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:12:22,012 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:22,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:22,013 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) [2021-10-07 15:12:22,014 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 [2021-10-07 15:12:23,216 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:12:23,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:23,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-07 15:12:23,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:23,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:12:23,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:12:23,365 INFO L354 Elim1Store]: treesize reduction 330, result has 13.2 percent of original size [2021-10-07 15:12:23,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 55 [2021-10-07 15:12:24,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-07 15:12:24,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:12:24,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:12:25,018 INFO L354 Elim1Store]: treesize reduction 136, result has 34.9 percent of original size [2021-10-07 15:12:25,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 60 treesize of output 116 [2021-10-07 15:12:25,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2021-10-07 15:12:25,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2021-10-07 15:12:25,292 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-07 15:12:25,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 48 [2021-10-07 15:12:25,404 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:12:25,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-07 15:12:25,767 INFO L354 Elim1Store]: treesize reduction 88, result has 20.7 percent of original size [2021-10-07 15:12:25,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 51 [2021-10-07 15:12:26,284 INFO L354 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2021-10-07 15:12:26,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 29 [2021-10-07 15:12:26,338 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:12:26,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54700726] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:26,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:26,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 25 [2021-10-07 15:12:26,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077166049] [2021-10-07 15:12:26,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-07 15:12:26,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:26,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-07 15:12:26,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:12:26,341 INFO L87 Difference]: Start difference. First operand 1965 states and 7612 transitions. Second operand has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 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) [2021-10-07 15:12:30,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:30,784 INFO L93 Difference]: Finished difference Result 2464 states and 8759 transitions. [2021-10-07 15:12:30,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:12:30,784 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 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 19 [2021-10-07 15:12:30,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:30,790 INFO L225 Difference]: With dead ends: 2464 [2021-10-07 15:12:30,791 INFO L226 Difference]: Without dead ends: 2462 [2021-10-07 15:12:30,791 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 3885.6ms TimeCoverageRelationStatistics Valid=336, Invalid=2214, Unknown=0, NotChecked=0, Total=2550 [2021-10-07 15:12:30,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2462 states. [2021-10-07 15:12:30,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2462 to 1958. [2021-10-07 15:12:30,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1958 states, 1934 states have (on average 3.927094105480869) internal successors, (7595), 1957 states have internal predecessors, (7595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:30,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 7595 transitions. [2021-10-07 15:12:30,836 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 7595 transitions. Word has length 19 [2021-10-07 15:12:30,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:30,837 INFO L470 AbstractCegarLoop]: Abstraction has 1958 states and 7595 transitions. [2021-10-07 15:12:30,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 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) [2021-10-07 15:12:30,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 7595 transitions. [2021-10-07 15:12:30,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:12:30,838 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:30,839 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:30,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2021-10-07 15:12:31,039 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,SelfDestructingSolverStorable63 [2021-10-07 15:12:31,040 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:12:31,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:31,040 INFO L82 PathProgramCache]: Analyzing trace with hash 825778113, now seen corresponding path program 1 times [2021-10-07 15:12:31,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:31,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696282746] [2021-10-07 15:12:31,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:31,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:31,350 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:12:31,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:31,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696282746] [2021-10-07 15:12:31,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696282746] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:31,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290309208] [2021-10-07 15:12:31,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:31,351 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:31,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:31,352 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) [2021-10-07 15:12:31,353 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 [2021-10-07 15:12:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:32,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-07 15:12:32,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:32,773 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-07 15:12:32,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 108 [2021-10-07 15:12:33,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-07 15:12:34,371 INFO L354 Elim1Store]: treesize reduction 128, result has 36.3 percent of original size [2021-10-07 15:12:34,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 68 treesize of output 124 [2021-10-07 15:12:34,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2021-10-07 15:12:34,635 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-07 15:12:34,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 52 [2021-10-07 15:12:34,741 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:12:34,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-07 15:12:34,866 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:12:34,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-07 15:12:35,014 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:12:35,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-07 15:12:35,591 INFO L354 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2021-10-07 15:12:35,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 29 [2021-10-07 15:12:35,638 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:12:35,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290309208] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:35,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:35,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14] total 23 [2021-10-07 15:12:35,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957880167] [2021-10-07 15:12:35,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:12:35,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:35,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:12:35,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=543, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:12:35,640 INFO L87 Difference]: Start difference. First operand 1958 states and 7595 transitions. Second operand has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 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) [2021-10-07 15:12:39,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:39,571 INFO L93 Difference]: Finished difference Result 2850 states and 9772 transitions. [2021-10-07 15:12:39,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-07 15:12:39,572 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 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 19 [2021-10-07 15:12:39,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:39,581 INFO L225 Difference]: With dead ends: 2850 [2021-10-07 15:12:39,582 INFO L226 Difference]: Without dead ends: 2842 [2021-10-07 15:12:39,582 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 3163.4ms TimeCoverageRelationStatistics Valid=296, Invalid=2154, Unknown=0, NotChecked=0, Total=2450 [2021-10-07 15:12:39,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2021-10-07 15:12:39,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1928. [2021-10-07 15:12:39,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1928 states, 1904 states have (on average 3.9401260504201683) internal successors, (7502), 1927 states have internal predecessors, (7502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:39,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1928 states to 1928 states and 7502 transitions. [2021-10-07 15:12:39,634 INFO L78 Accepts]: Start accepts. Automaton has 1928 states and 7502 transitions. Word has length 19 [2021-10-07 15:12:39,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:39,634 INFO L470 AbstractCegarLoop]: Abstraction has 1928 states and 7502 transitions. [2021-10-07 15:12:39,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 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) [2021-10-07 15:12:39,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1928 states and 7502 transitions. [2021-10-07 15:12:39,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:12:39,636 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:39,636 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:39,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2021-10-07 15:12:39,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:39,837 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:12:39,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:39,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1948394509, now seen corresponding path program 1 times [2021-10-07 15:12:39,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:39,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947006980] [2021-10-07 15:12:39,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:39,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:40,935 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:12:40,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:40,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947006980] [2021-10-07 15:12:40,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947006980] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:40,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644480566] [2021-10-07 15:12:40,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:40,937 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:40,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:40,938 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) [2021-10-07 15:12:40,939 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 [2021-10-07 15:12:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:42,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-07 15:12:42,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:42,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 207 treesize of output 199 [2021-10-07 15:12:42,854 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:12:42,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 32 [2021-10-07 15:12:42,938 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-07 15:12:42,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 19 [2021-10-07 15:12:42,979 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:12:42,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644480566] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:42,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:42,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 23 [2021-10-07 15:12:42,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930165441] [2021-10-07 15:12:42,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:12:42,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:42,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:12:42,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=540, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:12:42,981 INFO L87 Difference]: Start difference. First operand 1928 states and 7502 transitions. Second operand has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 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) [2021-10-07 15:12:46,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:46,026 INFO L93 Difference]: Finished difference Result 2564 states and 9071 transitions. [2021-10-07 15:12:46,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:12:46,027 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 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 19 [2021-10-07 15:12:46,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:46,033 INFO L225 Difference]: With dead ends: 2564 [2021-10-07 15:12:46,033 INFO L226 Difference]: Without dead ends: 2564 [2021-10-07 15:12:46,033 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 2668.6ms TimeCoverageRelationStatistics Valid=265, Invalid=1805, Unknown=0, NotChecked=0, Total=2070 [2021-10-07 15:12:46,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2021-10-07 15:12:46,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 2039. [2021-10-07 15:12:46,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2039 states, 2015 states have (on average 3.8724565756823823) internal successors, (7803), 2038 states have internal predecessors, (7803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:46,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 7803 transitions. [2021-10-07 15:12:46,070 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 7803 transitions. Word has length 19 [2021-10-07 15:12:46,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:46,071 INFO L470 AbstractCegarLoop]: Abstraction has 2039 states and 7803 transitions. [2021-10-07 15:12:46,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 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) [2021-10-07 15:12:46,071 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 7803 transitions. [2021-10-07 15:12:46,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:12:46,072 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:46,072 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:46,117 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 [2021-10-07 15:12:46,287 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,SelfDestructingSolverStorable65 [2021-10-07 15:12:46,288 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:12:46,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:46,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1948394464, now seen corresponding path program 1 times [2021-10-07 15:12:46,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:46,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188169379] [2021-10-07 15:12:46,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:46,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:46,845 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:12:46,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:46,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188169379] [2021-10-07 15:12:46,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188169379] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:46,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380777657] [2021-10-07 15:12:46,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:46,846 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:46,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:46,850 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) [2021-10-07 15:12:46,866 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 [2021-10-07 15:12:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:48,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-07 15:12:48,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:48,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 133 [2021-10-07 15:12:48,661 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-07 15:12:48,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 44 [2021-10-07 15:12:48,715 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-07 15:12:48,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 10 [2021-10-07 15:12:48,748 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:12:48,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380777657] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:48,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:48,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2021-10-07 15:12:48,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040629560] [2021-10-07 15:12:48,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:12:48,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:48,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:12:48,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:12:48,751 INFO L87 Difference]: Start difference. First operand 2039 states and 7803 transitions. Second operand has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 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) [2021-10-07 15:12:49,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:49,874 INFO L93 Difference]: Finished difference Result 2488 states and 8892 transitions. [2021-10-07 15:12:49,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:12:49,874 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 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 19 [2021-10-07 15:12:49,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:49,880 INFO L225 Difference]: With dead ends: 2488 [2021-10-07 15:12:49,881 INFO L226 Difference]: Without dead ends: 2472 [2021-10-07 15:12:49,881 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1006.9ms TimeCoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 15:12:49,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2021-10-07 15:12:49,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 2110. [2021-10-07 15:12:49,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2110 states, 2086 states have (on average 3.8245445829338447) internal successors, (7978), 2109 states have internal predecessors, (7978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:49,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2110 states to 2110 states and 7978 transitions. [2021-10-07 15:12:49,919 INFO L78 Accepts]: Start accepts. Automaton has 2110 states and 7978 transitions. Word has length 19 [2021-10-07 15:12:49,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:49,919 INFO L470 AbstractCegarLoop]: Abstraction has 2110 states and 7978 transitions. [2021-10-07 15:12:49,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 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) [2021-10-07 15:12:49,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2110 states and 7978 transitions. [2021-10-07 15:12:49,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:12:49,920 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:49,920 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:49,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-10-07 15:12:50,121 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,SelfDestructingSolverStorable66 [2021-10-07 15:12:50,121 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:12:50,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:50,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1575709099, now seen corresponding path program 2 times [2021-10-07 15:12:50,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:50,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38180735] [2021-10-07 15:12:50,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:50,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:50,708 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:12:50,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:50,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38180735] [2021-10-07 15:12:50,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38180735] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:50,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830000185] [2021-10-07 15:12:50,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:12:50,709 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:50,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:50,712 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) [2021-10-07 15:12:50,713 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 [2021-10-07 15:12:52,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:12:52,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:52,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-07 15:12:52,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:52,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:12:52,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:12:52,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:12:52,162 INFO L354 Elim1Store]: treesize reduction 316, result has 12.5 percent of original size [2021-10-07 15:12:52,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 55 [2021-10-07 15:12:53,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:12:53,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:12:53,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:12:53,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:12:53,283 INFO L354 Elim1Store]: treesize reduction 128, result has 36.3 percent of original size [2021-10-07 15:12:53,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 60 treesize of output 116 [2021-10-07 15:12:53,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-07 15:12:53,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-10-07 15:12:53,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:12:53,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:12:54,005 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:12:54,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 38 [2021-10-07 15:12:54,110 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-07 15:12:54,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2021-10-07 15:12:54,197 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:12:54,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830000185] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:54,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:54,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 23 [2021-10-07 15:12:54,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589590669] [2021-10-07 15:12:54,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:12:54,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:54,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:12:54,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:12:54,200 INFO L87 Difference]: Start difference. First operand 2110 states and 7978 transitions. Second operand has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 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) [2021-10-07 15:12:56,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:56,972 INFO L93 Difference]: Finished difference Result 3465 states and 11440 transitions. [2021-10-07 15:12:56,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:12:56,973 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 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 19 [2021-10-07 15:12:56,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:56,980 INFO L225 Difference]: With dead ends: 3465 [2021-10-07 15:12:56,980 INFO L226 Difference]: Without dead ends: 3465 [2021-10-07 15:12:56,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 2621.5ms TimeCoverageRelationStatistics Valid=279, Invalid=1701, Unknown=0, NotChecked=0, Total=1980 [2021-10-07 15:12:56,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3465 states. [2021-10-07 15:12:57,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3465 to 2141. [2021-10-07 15:12:57,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2141 states, 2117 states have (on average 3.8138875767595652) internal successors, (8074), 2140 states have internal predecessors, (8074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:57,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 8074 transitions. [2021-10-07 15:12:57,026 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 8074 transitions. Word has length 19 [2021-10-07 15:12:57,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:57,026 INFO L470 AbstractCegarLoop]: Abstraction has 2141 states and 8074 transitions. [2021-10-07 15:12:57,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 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) [2021-10-07 15:12:57,026 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 8074 transitions. [2021-10-07 15:12:57,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:12:57,027 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:57,027 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:57,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-10-07 15:12:57,228 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,SelfDestructingSolverStorable67 [2021-10-07 15:12:57,228 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:12:57,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:57,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1575709054, now seen corresponding path program 2 times [2021-10-07 15:12:57,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:57,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100293370] [2021-10-07 15:12:57,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:57,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:57,767 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:12:57,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:57,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100293370] [2021-10-07 15:12:57,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100293370] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:57,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50874281] [2021-10-07 15:12:57,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:12:57,768 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:57,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:57,769 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) [2021-10-07 15:12:57,795 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 [2021-10-07 15:12:59,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:12:59,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:59,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-07 15:12:59,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:59,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:12:59,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:12:59,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:12:59,317 INFO L354 Elim1Store]: treesize reduction 316, result has 12.5 percent of original size [2021-10-07 15:12:59,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 55 [2021-10-07 15:13:00,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:13:00,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:13:00,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:13:00,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:13:00,573 INFO L354 Elim1Store]: treesize reduction 128, result has 36.3 percent of original size [2021-10-07 15:13:00,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 60 treesize of output 116 [2021-10-07 15:13:00,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-07 15:13:00,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-10-07 15:13:00,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:13:01,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:13:01,611 INFO L354 Elim1Store]: treesize reduction 88, result has 20.7 percent of original size [2021-10-07 15:13:01,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 65 [2021-10-07 15:13:01,776 INFO L354 Elim1Store]: treesize reduction 46, result has 6.1 percent of original size [2021-10-07 15:13:01,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 40 [2021-10-07 15:13:01,815 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:13:01,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50874281] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:01,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:01,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 23 [2021-10-07 15:13:01,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509892311] [2021-10-07 15:13:01,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:13:01,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:01,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:13:01,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:13:01,817 INFO L87 Difference]: Start difference. First operand 2141 states and 8074 transitions. Second operand has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 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) [2021-10-07 15:13:04,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:04,587 INFO L93 Difference]: Finished difference Result 2870 states and 9758 transitions. [2021-10-07 15:13:04,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:13:04,588 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 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 19 [2021-10-07 15:13:04,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:04,594 INFO L225 Difference]: With dead ends: 2870 [2021-10-07 15:13:04,594 INFO L226 Difference]: Without dead ends: 2862 [2021-10-07 15:13:04,594 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 2545.1ms TimeCoverageRelationStatistics Valid=206, Invalid=1516, Unknown=0, NotChecked=0, Total=1722 [2021-10-07 15:13:04,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2021-10-07 15:13:04,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2113. [2021-10-07 15:13:04,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2113 states, 2089 states have (on average 3.823360459550024) internal successors, (7987), 2112 states have internal predecessors, (7987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:04,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 7987 transitions. [2021-10-07 15:13:04,636 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 7987 transitions. Word has length 19 [2021-10-07 15:13:04,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:04,636 INFO L470 AbstractCegarLoop]: Abstraction has 2113 states and 7987 transitions. [2021-10-07 15:13:04,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 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) [2021-10-07 15:13:04,636 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 7987 transitions. [2021-10-07 15:13:04,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:13:04,638 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:04,638 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:04,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-10-07 15:13:04,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:04,847 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:13:04,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:04,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1577198649, now seen corresponding path program 2 times [2021-10-07 15:13:04,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:04,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541723557] [2021-10-07 15:13:04,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:04,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:05,731 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:13:05,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:05,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541723557] [2021-10-07 15:13:05,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541723557] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:05,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921731598] [2021-10-07 15:13:05,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:13:05,732 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:05,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:05,733 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) [2021-10-07 15:13:05,734 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 [2021-10-07 15:13:07,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:13:07,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:07,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 63 conjunts are in the unsatisfiable core [2021-10-07 15:13:07,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:07,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-07 15:13:07,684 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:13:07,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-07 15:13:07,823 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:13:07,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-07 15:13:08,612 INFO L354 Elim1Store]: treesize reduction 80, result has 30.4 percent of original size [2021-10-07 15:13:08,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 72 [2021-10-07 15:13:08,802 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:08,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921731598] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:08,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:08,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 27 [2021-10-07 15:13:08,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194413278] [2021-10-07 15:13:08,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-07 15:13:08,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:08,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-07 15:13:08,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=740, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:13:08,804 INFO L87 Difference]: Start difference. First operand 2113 states and 7987 transitions. Second operand has 29 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 28 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) [2021-10-07 15:13:14,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:14,857 INFO L93 Difference]: Finished difference Result 2897 states and 9825 transitions. [2021-10-07 15:13:14,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-07 15:13:14,858 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 28 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 19 [2021-10-07 15:13:14,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:14,864 INFO L225 Difference]: With dead ends: 2897 [2021-10-07 15:13:14,864 INFO L226 Difference]: Without dead ends: 2897 [2021-10-07 15:13:14,865 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 5072.8ms TimeCoverageRelationStatistics Valid=418, Invalid=3242, Unknown=0, NotChecked=0, Total=3660 [2021-10-07 15:13:14,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2021-10-07 15:13:14,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2130. [2021-10-07 15:13:14,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2130 states, 2106 states have (on average 3.819088319088319) internal successors, (8043), 2129 states have internal predecessors, (8043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:14,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2130 states to 2130 states and 8043 transitions. [2021-10-07 15:13:14,910 INFO L78 Accepts]: Start accepts. Automaton has 2130 states and 8043 transitions. Word has length 19 [2021-10-07 15:13:14,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:14,910 INFO L470 AbstractCegarLoop]: Abstraction has 2130 states and 8043 transitions. [2021-10-07 15:13:14,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 28 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) [2021-10-07 15:13:14,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2130 states and 8043 transitions. [2021-10-07 15:13:14,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:13:14,912 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:14,912 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:14,942 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 [2021-10-07 15:13:15,112 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,SelfDestructingSolverStorable69 [2021-10-07 15:13:15,113 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:13:15,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:15,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1577198604, now seen corresponding path program 1 times [2021-10-07 15:13:15,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:15,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252023563] [2021-10-07 15:13:15,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:15,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:15,737 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:13:15,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:15,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252023563] [2021-10-07 15:13:15,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252023563] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:15,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329181167] [2021-10-07 15:13:15,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:15,738 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:15,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:15,740 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) [2021-10-07 15:13:15,741 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 [2021-10-07 15:13:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:17,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-07 15:13:17,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:17,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-07 15:13:18,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:13:18,030 INFO L354 Elim1Store]: treesize reduction 75, result has 24.2 percent of original size [2021-10-07 15:13:18,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 44 [2021-10-07 15:13:18,094 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-07 15:13:18,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2021-10-07 15:13:18,123 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:13:18,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329181167] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:18,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:18,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 22 [2021-10-07 15:13:18,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747570193] [2021-10-07 15:13:18,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:13:18,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:18,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:13:18,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:13:18,125 INFO L87 Difference]: Start difference. First operand 2130 states and 8043 transitions. Second operand has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 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) [2021-10-07 15:13:19,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:19,791 INFO L93 Difference]: Finished difference Result 2751 states and 9583 transitions. [2021-10-07 15:13:19,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:13:19,792 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 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 19 [2021-10-07 15:13:19,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:19,799 INFO L225 Difference]: With dead ends: 2751 [2021-10-07 15:13:19,800 INFO L226 Difference]: Without dead ends: 2745 [2021-10-07 15:13:19,800 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 1697.6ms TimeCoverageRelationStatistics Valid=212, Invalid=1348, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 15:13:19,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2021-10-07 15:13:19,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2151. [2021-10-07 15:13:19,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2151 states, 2127 states have (on average 3.8062999529854253) internal successors, (8096), 2150 states have internal predecessors, (8096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:19,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 8096 transitions. [2021-10-07 15:13:19,841 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 8096 transitions. Word has length 19 [2021-10-07 15:13:19,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:19,842 INFO L470 AbstractCegarLoop]: Abstraction has 2151 states and 8096 transitions. [2021-10-07 15:13:19,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 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) [2021-10-07 15:13:19,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 8096 transitions. [2021-10-07 15:13:19,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:13:19,843 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:19,843 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:19,872 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 [2021-10-07 15:13:20,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:20,044 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:13:20,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:20,045 INFO L82 PathProgramCache]: Analyzing trace with hash -915115282, now seen corresponding path program 2 times [2021-10-07 15:13:20,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:20,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221903141] [2021-10-07 15:13:20,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:20,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:20,551 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:13:20,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:20,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221903141] [2021-10-07 15:13:20,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221903141] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:20,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236601412] [2021-10-07 15:13:20,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:13:20,553 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:20,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:20,554 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) [2021-10-07 15:13:20,555 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 [2021-10-07 15:13:22,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:13:22,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:22,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-07 15:13:22,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:22,217 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-07 15:13:22,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 257 treesize of output 271 [2021-10-07 15:13:23,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-07 15:13:24,370 INFO L354 Elim1Store]: treesize reduction 128, result has 36.3 percent of original size [2021-10-07 15:13:24,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 68 treesize of output 124 [2021-10-07 15:13:24,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-07 15:13:24,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-10-07 15:13:24,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:13:24,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:13:25,358 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-07 15:13:25,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 62 [2021-10-07 15:13:25,488 INFO L354 Elim1Store]: treesize reduction 38, result has 7.3 percent of original size [2021-10-07 15:13:25,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 35 [2021-10-07 15:13:25,533 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:13:25,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236601412] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:25,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:25,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 23 [2021-10-07 15:13:25,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518499084] [2021-10-07 15:13:25,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:13:25,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:25,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:13:25,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:13:25,536 INFO L87 Difference]: Start difference. First operand 2151 states and 8096 transitions. Second operand has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 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) [2021-10-07 15:13:26,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:26,985 INFO L93 Difference]: Finished difference Result 2261 states and 8338 transitions. [2021-10-07 15:13:26,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:13:26,985 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 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 19 [2021-10-07 15:13:26,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:26,990 INFO L225 Difference]: With dead ends: 2261 [2021-10-07 15:13:26,991 INFO L226 Difference]: Without dead ends: 2261 [2021-10-07 15:13:26,991 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 1601.6ms TimeCoverageRelationStatistics Valid=141, Invalid=1119, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 15:13:26,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2021-10-07 15:13:27,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 2112. [2021-10-07 15:13:27,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 2088 states have (on average 3.82088122605364) internal successors, (7978), 2111 states have internal predecessors, (7978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:27,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 7978 transitions. [2021-10-07 15:13:27,029 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 7978 transitions. Word has length 19 [2021-10-07 15:13:27,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:27,029 INFO L470 AbstractCegarLoop]: Abstraction has 2112 states and 7978 transitions. [2021-10-07 15:13:27,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 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) [2021-10-07 15:13:27,029 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 7978 transitions. [2021-10-07 15:13:27,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:13:27,030 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:27,030 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:27,060 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 [2021-10-07 15:13:27,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:27,231 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:13:27,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:27,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1401448985, now seen corresponding path program 3 times [2021-10-07 15:13:27,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:27,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341467500] [2021-10-07 15:13:27,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:27,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:28,306 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:28,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:28,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341467500] [2021-10-07 15:13:28,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341467500] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:28,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574026611] [2021-10-07 15:13:28,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:13:28,308 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:28,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:28,311 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) [2021-10-07 15:13:28,327 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 [2021-10-07 15:13:29,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:13:29,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:29,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 67 conjunts are in the unsatisfiable core [2021-10-07 15:13:29,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:30,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 636 treesize of output 572 [2021-10-07 15:13:30,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-07 15:13:30,745 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:13:30,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2021-10-07 15:13:31,303 INFO L354 Elim1Store]: treesize reduction 92, result has 20.0 percent of original size [2021-10-07 15:13:31,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 55 [2021-10-07 15:13:31,886 INFO L354 Elim1Store]: treesize reduction 92, result has 20.0 percent of original size [2021-10-07 15:13:31,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 58 [2021-10-07 15:13:32,147 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:32,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574026611] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:32,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:32,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:13:32,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562526408] [2021-10-07 15:13:32,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:13:32,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:32,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:13:32,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=799, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:13:32,150 INFO L87 Difference]: Start difference. First operand 2112 states and 7978 transitions. Second operand has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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) [2021-10-07 15:13:35,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:35,291 INFO L93 Difference]: Finished difference Result 2911 states and 9924 transitions. [2021-10-07 15:13:35,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 15:13:35,292 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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 19 [2021-10-07 15:13:35,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:35,298 INFO L225 Difference]: With dead ends: 2911 [2021-10-07 15:13:35,298 INFO L226 Difference]: Without dead ends: 2911 [2021-10-07 15:13:35,298 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 3169.1ms TimeCoverageRelationStatistics Valid=156, Invalid=1650, Unknown=0, NotChecked=0, Total=1806 [2021-10-07 15:13:35,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2021-10-07 15:13:35,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2224. [2021-10-07 15:13:35,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2224 states, 2200 states have (on average 3.7636363636363637) internal successors, (8280), 2223 states have internal predecessors, (8280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:35,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2224 states to 2224 states and 8280 transitions. [2021-10-07 15:13:35,342 INFO L78 Accepts]: Start accepts. Automaton has 2224 states and 8280 transitions. Word has length 19 [2021-10-07 15:13:35,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:35,342 INFO L470 AbstractCegarLoop]: Abstraction has 2224 states and 8280 transitions. [2021-10-07 15:13:35,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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) [2021-10-07 15:13:35,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2224 states and 8280 transitions. [2021-10-07 15:13:35,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:13:35,343 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:35,344 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:35,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2021-10-07 15:13:35,544 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,SelfDestructingSolverStorable72 [2021-10-07 15:13:35,544 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:13:35,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:35,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1401448940, now seen corresponding path program 3 times [2021-10-07 15:13:35,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:35,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901682524] [2021-10-07 15:13:35,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:35,546 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:35,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:35,951 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:13:35,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:35,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901682524] [2021-10-07 15:13:35,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901682524] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:35,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916945302] [2021-10-07 15:13:35,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:13:35,952 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:35,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:35,953 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) [2021-10-07 15:13:35,954 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 [2021-10-07 15:13:37,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:13:37,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:37,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-07 15:13:37,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:37,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 954 treesize of output 938 [2021-10-07 15:13:38,186 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:13:38,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-07 15:13:38,470 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:13:38,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-07 15:13:38,562 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-10-07 15:13:38,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 27 [2021-10-07 15:13:38,594 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:13:38,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916945302] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:38,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:38,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-07 15:13:38,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980384267] [2021-10-07 15:13:38,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:13:38,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:38,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:13:38,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:13:38,597 INFO L87 Difference]: Start difference. First operand 2224 states and 8280 transitions. Second operand has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 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) [2021-10-07 15:13:39,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:39,945 INFO L93 Difference]: Finished difference Result 2671 states and 9291 transitions. [2021-10-07 15:13:39,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 15:13:39,945 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 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 19 [2021-10-07 15:13:39,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:39,951 INFO L225 Difference]: With dead ends: 2671 [2021-10-07 15:13:39,951 INFO L226 Difference]: Without dead ends: 2655 [2021-10-07 15:13:39,952 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1058.0ms TimeCoverageRelationStatistics Valid=159, Invalid=1031, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 15:13:39,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2655 states. [2021-10-07 15:13:39,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2655 to 2095. [2021-10-07 15:13:39,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2095 states, 2071 states have (on average 3.8319652341863835) internal successors, (7936), 2094 states have internal predecessors, (7936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:40,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2095 states to 2095 states and 7936 transitions. [2021-10-07 15:13:40,000 INFO L78 Accepts]: Start accepts. Automaton has 2095 states and 7936 transitions. Word has length 19 [2021-10-07 15:13:40,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:40,000 INFO L470 AbstractCegarLoop]: Abstraction has 2095 states and 7936 transitions. [2021-10-07 15:13:40,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 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) [2021-10-07 15:13:40,001 INFO L276 IsEmpty]: Start isEmpty. Operand 2095 states and 7936 transitions. [2021-10-07 15:13:40,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:13:40,002 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:40,002 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:40,034 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 [2021-10-07 15:13:40,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:40,213 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:13:40,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:40,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1223039006, now seen corresponding path program 3 times [2021-10-07 15:13:40,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:40,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108756841] [2021-10-07 15:13:40,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:40,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:40,805 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:13:40,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:40,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108756841] [2021-10-07 15:13:40,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108756841] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:40,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530288233] [2021-10-07 15:13:40,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:13:40,807 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:40,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:40,808 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) [2021-10-07 15:13:40,809 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 [2021-10-07 15:13:42,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:13:42,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:42,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-07 15:13:42,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:42,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 196 [2021-10-07 15:13:43,250 INFO L354 Elim1Store]: treesize reduction 88, result has 20.7 percent of original size [2021-10-07 15:13:43,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 51 [2021-10-07 15:13:43,710 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-07 15:13:43,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 55 [2021-10-07 15:13:43,837 INFO L354 Elim1Store]: treesize reduction 38, result has 7.3 percent of original size [2021-10-07 15:13:43,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 30 [2021-10-07 15:13:43,877 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:13:43,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530288233] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:43,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:43,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-07 15:13:43,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697258860] [2021-10-07 15:13:43,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:13:43,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:43,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:13:43,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:13:43,880 INFO L87 Difference]: Start difference. First operand 2095 states and 7936 transitions. Second operand has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 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) [2021-10-07 15:13:46,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:46,026 INFO L93 Difference]: Finished difference Result 2524 states and 8930 transitions. [2021-10-07 15:13:46,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 15:13:46,027 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 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 19 [2021-10-07 15:13:46,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:46,032 INFO L225 Difference]: With dead ends: 2524 [2021-10-07 15:13:46,032 INFO L226 Difference]: Without dead ends: 2518 [2021-10-07 15:13:46,032 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1823.8ms TimeCoverageRelationStatistics Valid=192, Invalid=1290, Unknown=0, NotChecked=0, Total=1482 [2021-10-07 15:13:46,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2021-10-07 15:13:46,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 1943. [2021-10-07 15:13:46,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1943 states, 1919 states have (on average 3.904637832204273) internal successors, (7493), 1942 states have internal predecessors, (7493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:46,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 7493 transitions. [2021-10-07 15:13:46,066 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 7493 transitions. Word has length 19 [2021-10-07 15:13:46,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:46,066 INFO L470 AbstractCegarLoop]: Abstraction has 1943 states and 7493 transitions. [2021-10-07 15:13:46,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 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) [2021-10-07 15:13:46,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 7493 transitions. [2021-10-07 15:13:46,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:13:46,068 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:46,068 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:46,098 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 [2021-10-07 15:13:46,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:46,270 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:13:46,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:46,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1636102802, now seen corresponding path program 4 times [2021-10-07 15:13:46,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:46,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853861174] [2021-10-07 15:13:46,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:46,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:46,954 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:13:46,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:46,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853861174] [2021-10-07 15:13:46,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853861174] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:46,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241084602] [2021-10-07 15:13:46,956 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:13:46,956 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:46,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:46,957 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) [2021-10-07 15:13:46,958 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 [2021-10-07 15:13:48,658 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:13:48,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:48,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-07 15:13:48,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:48,804 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-07 15:13:48,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 108 [2021-10-07 15:13:49,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:13:50,533 INFO L354 Elim1Store]: treesize reduction 128, result has 36.3 percent of original size [2021-10-07 15:13:50,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 68 treesize of output 124 [2021-10-07 15:13:50,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-07 15:13:50,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-10-07 15:13:50,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:13:50,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:13:51,282 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:13:51,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-07 15:13:51,372 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-07 15:13:51,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2021-10-07 15:13:51,412 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:13:51,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241084602] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:51,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:51,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 24 [2021-10-07 15:13:51,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772671679] [2021-10-07 15:13:51,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 15:13:51,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:51,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 15:13:51,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:13:51,414 INFO L87 Difference]: Start difference. First operand 1943 states and 7493 transitions. Second operand has 26 states, 25 states have (on average 1.48) internal successors, (37), 25 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) [2021-10-07 15:13:53,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:53,859 INFO L93 Difference]: Finished difference Result 2489 states and 8731 transitions. [2021-10-07 15:13:53,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:13:53,860 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.48) internal successors, (37), 25 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 19 [2021-10-07 15:13:53,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:53,866 INFO L225 Difference]: With dead ends: 2489 [2021-10-07 15:13:53,866 INFO L226 Difference]: Without dead ends: 2473 [2021-10-07 15:13:53,866 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 2270.0ms TimeCoverageRelationStatistics Valid=219, Invalid=1673, Unknown=0, NotChecked=0, Total=1892 [2021-10-07 15:13:53,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2021-10-07 15:13:53,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2012. [2021-10-07 15:13:53,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2012 states, 1988 states have (on average 3.87374245472837) internal successors, (7701), 2011 states have internal predecessors, (7701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:53,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2012 states to 2012 states and 7701 transitions. [2021-10-07 15:13:53,905 INFO L78 Accepts]: Start accepts. Automaton has 2012 states and 7701 transitions. Word has length 19 [2021-10-07 15:13:53,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:53,905 INFO L470 AbstractCegarLoop]: Abstraction has 2012 states and 7701 transitions. [2021-10-07 15:13:53,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.48) internal successors, (37), 25 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) [2021-10-07 15:13:53,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2012 states and 7701 transitions. [2021-10-07 15:13:53,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:13:53,907 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:53,907 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:53,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2021-10-07 15:13:54,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:54,108 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:13:54,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:54,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1344525122, now seen corresponding path program 5 times [2021-10-07 15:13:54,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:54,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578821142] [2021-10-07 15:13:54,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:54,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:55,345 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:55,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:55,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578821142] [2021-10-07 15:13:55,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578821142] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:55,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32931096] [2021-10-07 15:13:55,346 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:13:55,346 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:55,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:55,347 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) [2021-10-07 15:13:55,348 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 [2021-10-07 15:13:57,113 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:13:57,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:57,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-07 15:13:57,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:57,510 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-07 15:13:57,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 16 [2021-10-07 15:13:57,550 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:13:57,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32931096] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:57,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:57,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7] total 21 [2021-10-07 15:13:57,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965900753] [2021-10-07 15:13:57,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:13:57,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:57,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:13:57,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:13:57,552 INFO L87 Difference]: Start difference. First operand 2012 states and 7701 transitions. Second operand has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 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) [2021-10-07 15:13:59,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:59,713 INFO L93 Difference]: Finished difference Result 2639 states and 9280 transitions. [2021-10-07 15:13:59,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:13:59,714 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 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 19 [2021-10-07 15:13:59,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:59,719 INFO L225 Difference]: With dead ends: 2639 [2021-10-07 15:13:59,720 INFO L226 Difference]: Without dead ends: 2631 [2021-10-07 15:13:59,720 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1921.7ms TimeCoverageRelationStatistics Valid=159, Invalid=1173, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 15:13:59,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2631 states. [2021-10-07 15:13:59,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2631 to 2078. [2021-10-07 15:13:59,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2078 states, 2054 states have (on average 3.8510223953261926) internal successors, (7910), 2077 states have internal predecessors, (7910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:59,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 7910 transitions. [2021-10-07 15:13:59,761 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 7910 transitions. Word has length 19 [2021-10-07 15:13:59,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:59,761 INFO L470 AbstractCegarLoop]: Abstraction has 2078 states and 7910 transitions. [2021-10-07 15:13:59,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 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) [2021-10-07 15:13:59,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 7910 transitions. [2021-10-07 15:13:59,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:13:59,762 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:59,800 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:59,832 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 [2021-10-07 15:14:00,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:00,001 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:14:00,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:14:00,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1344573172, now seen corresponding path program 5 times [2021-10-07 15:14:00,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:14:00,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023142198] [2021-10-07 15:14:00,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:14:00,004 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:14:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:00,649 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:14:00,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:14:00,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023142198] [2021-10-07 15:14:00,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023142198] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:00,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567897574] [2021-10-07 15:14:00,650 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:14:00,651 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:00,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:14:00,652 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) [2021-10-07 15:14:00,653 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 [2021-10-07 15:14:02,407 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:14:02,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:14:02,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-07 15:14:02,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:02,766 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-07 15:14:02,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 16 [2021-10-07 15:14:02,799 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:14:02,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567897574] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:02,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:02,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 18 [2021-10-07 15:14:02,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961401399] [2021-10-07 15:14:02,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 15:14:02,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:02,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 15:14:02,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:14:02,801 INFO L87 Difference]: Start difference. First operand 2078 states and 7910 transitions. Second operand has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-10-07 15:14:04,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:14:04,415 INFO L93 Difference]: Finished difference Result 3069 states and 10919 transitions. [2021-10-07 15:14:04,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 15:14:04,416 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 19 [2021-10-07 15:14:04,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:14:04,423 INFO L225 Difference]: With dead ends: 3069 [2021-10-07 15:14:04,423 INFO L226 Difference]: Without dead ends: 3069 [2021-10-07 15:14:04,423 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1450.6ms TimeCoverageRelationStatistics Valid=234, Invalid=1572, Unknown=0, NotChecked=0, Total=1806 [2021-10-07 15:14:04,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2021-10-07 15:14:04,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 2344. [2021-10-07 15:14:04,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 2320 states have (on average 3.831896551724138) internal successors, (8890), 2343 states have internal predecessors, (8890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:14:04,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 8890 transitions. [2021-10-07 15:14:04,491 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 8890 transitions. Word has length 19 [2021-10-07 15:14:04,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:14:04,491 INFO L470 AbstractCegarLoop]: Abstraction has 2344 states and 8890 transitions. [2021-10-07 15:14:04,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-10-07 15:14:04,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 8890 transitions. [2021-10-07 15:14:04,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:14:04,493 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:14:04,494 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:14:04,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2021-10-07 15:14:04,707 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,SelfDestructingSolverStorable77 [2021-10-07 15:14:04,708 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:14:04,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:14:04,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1402723282, now seen corresponding path program 6 times [2021-10-07 15:14:04,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:14:04,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396008992] [2021-10-07 15:14:04,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:14:04,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:14:04,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:05,347 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:14:05,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:14:05,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396008992] [2021-10-07 15:14:05,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396008992] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:05,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730490370] [2021-10-07 15:14:05,348 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:14:05,348 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:05,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:14:05,349 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) [2021-10-07 15:14:05,374 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 [2021-10-07 15:14:07,111 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:14:07,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:14:07,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-07 15:14:07,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:07,427 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-07 15:14:07,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 13 [2021-10-07 15:14:07,457 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:14:07,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730490370] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:07,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:07,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 18 [2021-10-07 15:14:07,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127024919] [2021-10-07 15:14:07,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 15:14:07,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:07,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 15:14:07,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:14:07,460 INFO L87 Difference]: Start difference. First operand 2344 states and 8890 transitions. Second operand has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-10-07 15:14:08,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:14:08,724 INFO L93 Difference]: Finished difference Result 2958 states and 10582 transitions. [2021-10-07 15:14:08,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:14:08,725 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 19 [2021-10-07 15:14:08,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:14:08,732 INFO L225 Difference]: With dead ends: 2958 [2021-10-07 15:14:08,732 INFO L226 Difference]: Without dead ends: 2958 [2021-10-07 15:14:08,732 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1060.4ms TimeCoverageRelationStatistics Valid=154, Invalid=1036, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 15:14:08,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2021-10-07 15:14:08,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 2450. [2021-10-07 15:14:08,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2450 states, 2426 states have (on average 3.793899422918384) internal successors, (9204), 2449 states have internal predecessors, (9204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:14:08,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2450 states to 2450 states and 9204 transitions. [2021-10-07 15:14:08,777 INFO L78 Accepts]: Start accepts. Automaton has 2450 states and 9204 transitions. Word has length 19 [2021-10-07 15:14:08,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:14:08,778 INFO L470 AbstractCegarLoop]: Abstraction has 2450 states and 9204 transitions. [2021-10-07 15:14:08,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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) [2021-10-07 15:14:08,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2450 states and 9204 transitions. [2021-10-07 15:14:08,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:14:08,780 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:14:08,780 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:14:08,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2021-10-07 15:14:08,980 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,SelfDestructingSolverStorable78 [2021-10-07 15:14:08,981 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:14:08,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:14:08,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1338903828, now seen corresponding path program 6 times [2021-10-07 15:14:08,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:14:08,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918285256] [2021-10-07 15:14:08,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:14:08,983 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:14:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:09,559 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:14:09,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:14:09,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918285256] [2021-10-07 15:14:09,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918285256] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:09,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067359020] [2021-10-07 15:14:09,560 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:14:09,560 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:09,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:14:09,561 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) [2021-10-07 15:14:09,562 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 [2021-10-07 15:14:11,351 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:14:11,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:14:11,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-07 15:14:11,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:11,590 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:14:11,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-10-07 15:14:11,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-07 15:14:11,712 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:14:11,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067359020] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:11,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:11,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 21 [2021-10-07 15:14:11,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746869872] [2021-10-07 15:14:11,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:14:11,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:11,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:14:11,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:14:11,714 INFO L87 Difference]: Start difference. First operand 2450 states and 9204 transitions. Second operand has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 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) [2021-10-07 15:14:13,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:14:13,419 INFO L93 Difference]: Finished difference Result 3513 states and 11592 transitions. [2021-10-07 15:14:13,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:14:13,419 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 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 19 [2021-10-07 15:14:13,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:14:13,428 INFO L225 Difference]: With dead ends: 3513 [2021-10-07 15:14:13,429 INFO L226 Difference]: Without dead ends: 3493 [2021-10-07 15:14:13,429 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 967.8ms TimeCoverageRelationStatistics Valid=159, Invalid=1247, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 15:14:13,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3493 states. [2021-10-07 15:14:13,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3493 to 2230. [2021-10-07 15:14:13,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2230 states, 2206 states have (on average 3.739347234814143) internal successors, (8249), 2229 states have internal predecessors, (8249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:14:13,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2230 states to 2230 states and 8249 transitions. [2021-10-07 15:14:13,475 INFO L78 Accepts]: Start accepts. Automaton has 2230 states and 8249 transitions. Word has length 19 [2021-10-07 15:14:13,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:14:13,475 INFO L470 AbstractCegarLoop]: Abstraction has 2230 states and 8249 transitions. [2021-10-07 15:14:13,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 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) [2021-10-07 15:14:13,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2230 states and 8249 transitions. [2021-10-07 15:14:13,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:14:13,477 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:14:13,477 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:14:13,508 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 [2021-10-07 15:14:13,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:13,678 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:14:13,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:14:13,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1714892638, now seen corresponding path program 7 times [2021-10-07 15:14:13,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:14:13,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597726866] [2021-10-07 15:14:13,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:14:13,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:14:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:14,674 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:14:14,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:14:14,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597726866] [2021-10-07 15:14:14,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597726866] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:14,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352577308] [2021-10-07 15:14:14,675 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:14:14,675 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:14,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:14:14,677 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) [2021-10-07 15:14:14,679 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 [2021-10-07 15:14:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:16,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-07 15:14:16,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:16,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 442 treesize of output 410 [2021-10-07 15:14:16,947 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-07 15:14:16,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 41 [2021-10-07 15:14:17,126 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-07 15:14:17,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 13 [2021-10-07 15:14:17,163 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:14:17,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352577308] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:17,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:17,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 23 [2021-10-07 15:14:17,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569144951] [2021-10-07 15:14:17,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:14:17,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:17,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:14:17,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:14:17,166 INFO L87 Difference]: Start difference. First operand 2230 states and 8249 transitions. Second operand has 25 states, 24 states have (on average 1.5) internal successors, (36), 24 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) [2021-10-07 15:14:18,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:14:18,912 INFO L93 Difference]: Finished difference Result 2754 states and 9692 transitions. [2021-10-07 15:14:18,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:14:18,912 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.5) internal successors, (36), 24 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 19 [2021-10-07 15:14:18,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:14:18,918 INFO L225 Difference]: With dead ends: 2754 [2021-10-07 15:14:18,918 INFO L226 Difference]: Without dead ends: 2754 [2021-10-07 15:14:18,918 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 1703.3ms TimeCoverageRelationStatistics Valid=183, Invalid=1457, Unknown=0, NotChecked=0, Total=1640 [2021-10-07 15:14:18,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2021-10-07 15:14:18,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 2218. [2021-10-07 15:14:18,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2218 states, 2194 states have (on average 3.743391066545123) internal successors, (8213), 2217 states have internal predecessors, (8213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:14:18,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 8213 transitions. [2021-10-07 15:14:18,999 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 8213 transitions. Word has length 19 [2021-10-07 15:14:18,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:14:19,000 INFO L470 AbstractCegarLoop]: Abstraction has 2218 states and 8213 transitions. [2021-10-07 15:14:19,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.5) internal successors, (36), 24 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) [2021-10-07 15:14:19,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 8213 transitions. [2021-10-07 15:14:19,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:14:19,001 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:14:19,001 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:14:19,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2021-10-07 15:14:19,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:19,205 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:14:19,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:14:19,207 INFO L82 PathProgramCache]: Analyzing trace with hash -177547346, now seen corresponding path program 7 times [2021-10-07 15:14:19,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:14:19,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250424582] [2021-10-07 15:14:19,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:14:19,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:14:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:19,641 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:14:19,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:14:19,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250424582] [2021-10-07 15:14:19,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250424582] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:19,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452817781] [2021-10-07 15:14:19,642 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:14:19,642 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:19,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:14:19,646 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) [2021-10-07 15:14:19,662 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 [2021-10-07 15:14:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:21,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 15:14:21,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:21,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-07 15:14:21,648 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:14:21,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452817781] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:21,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:21,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 17 [2021-10-07 15:14:21,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512415431] [2021-10-07 15:14:21,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 15:14:21,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:21,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 15:14:21,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:14:21,650 INFO L87 Difference]: Start difference. First operand 2218 states and 8213 transitions. Second operand has 19 states, 18 states have (on average 2.0) internal successors, (36), 18 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) [2021-10-07 15:14:22,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:14:22,680 INFO L93 Difference]: Finished difference Result 3186 states and 10946 transitions. [2021-10-07 15:14:22,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:14:22,681 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.0) internal successors, (36), 18 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 19 [2021-10-07 15:14:22,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:14:22,688 INFO L225 Difference]: With dead ends: 3186 [2021-10-07 15:14:22,688 INFO L226 Difference]: Without dead ends: 3186 [2021-10-07 15:14:22,689 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 868.8ms TimeCoverageRelationStatistics Valid=174, Invalid=1158, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 15:14:22,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3186 states. [2021-10-07 15:14:22,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3186 to 2235. [2021-10-07 15:14:22,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2235 states, 2211 states have (on average 3.753505201266395) internal successors, (8299), 2234 states have internal predecessors, (8299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:14:22,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 8299 transitions. [2021-10-07 15:14:22,743 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 8299 transitions. Word has length 19 [2021-10-07 15:14:22,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:14:22,743 INFO L470 AbstractCegarLoop]: Abstraction has 2235 states and 8299 transitions. [2021-10-07 15:14:22,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.0) internal successors, (36), 18 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) [2021-10-07 15:14:22,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 8299 transitions. [2021-10-07 15:14:22,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:14:22,745 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:14:22,745 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:14:22,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2021-10-07 15:14:22,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:22,950 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:14:22,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:14:22,950 INFO L82 PathProgramCache]: Analyzing trace with hash -177499296, now seen corresponding path program 8 times [2021-10-07 15:14:22,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:14:22,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100500953] [2021-10-07 15:14:22,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:14:22,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:14:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:23,957 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:14:23,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:14:23,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100500953] [2021-10-07 15:14:23,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100500953] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:23,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995924787] [2021-10-07 15:14:23,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:14:23,958 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:23,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:14:23,960 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) [2021-10-07 15:14:23,963 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 [2021-10-07 15:14:25,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:14:25,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:14:25,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-07 15:14:25,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:25,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 567 treesize of output 551 [2021-10-07 15:14:26,119 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:14:26,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-07 15:14:26,342 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-07 15:14:26,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 16 [2021-10-07 15:14:26,375 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:14:26,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995924787] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:26,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:26,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 21 [2021-10-07 15:14:26,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634848292] [2021-10-07 15:14:26,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:14:26,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:26,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:14:26,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:14:26,377 INFO L87 Difference]: Start difference. First operand 2235 states and 8299 transitions. Second operand has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 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) [2021-10-07 15:14:28,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:14:28,106 INFO L93 Difference]: Finished difference Result 3185 states and 11116 transitions. [2021-10-07 15:14:28,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:14:28,106 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 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 19 [2021-10-07 15:14:28,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:14:28,114 INFO L225 Difference]: With dead ends: 3185 [2021-10-07 15:14:28,114 INFO L226 Difference]: Without dead ends: 3185 [2021-10-07 15:14:28,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 1660.9ms TimeCoverageRelationStatistics Valid=229, Invalid=1663, Unknown=0, NotChecked=0, Total=1892 [2021-10-07 15:14:28,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3185 states. [2021-10-07 15:14:28,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3185 to 2210. [2021-10-07 15:14:28,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2210 states, 2186 states have (on average 3.731473010064044) internal successors, (8157), 2209 states have internal predecessors, (8157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:14:28,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 8157 transitions. [2021-10-07 15:14:28,156 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 8157 transitions. Word has length 19 [2021-10-07 15:14:28,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:14:28,157 INFO L470 AbstractCegarLoop]: Abstraction has 2210 states and 8157 transitions. [2021-10-07 15:14:28,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 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) [2021-10-07 15:14:28,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 8157 transitions. [2021-10-07 15:14:28,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:14:28,159 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:14:28,159 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:14:28,189 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 [2021-10-07 15:14:28,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:28,361 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:14:28,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:14:28,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1679582685, now seen corresponding path program 3 times [2021-10-07 15:14:28,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:14:28,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118789554] [2021-10-07 15:14:28,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:14:28,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:14:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:29,230 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:14:29,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:14:29,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118789554] [2021-10-07 15:14:29,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118789554] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:29,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721645670] [2021-10-07 15:14:29,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:14:29,231 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:29,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:14:29,232 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) [2021-10-07 15:14:29,234 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 [2021-10-07 15:14:31,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:14:31,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:14:31,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-07 15:14:31,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:31,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 133 [2021-10-07 15:14:31,745 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:14:31,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-07 15:14:31,902 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-07 15:14:31,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2021-10-07 15:14:31,941 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:14:31,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721645670] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:31,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:31,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 23 [2021-10-07 15:14:31,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861722109] [2021-10-07 15:14:31,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:14:31,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:31,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:14:31,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:14:31,943 INFO L87 Difference]: Start difference. First operand 2210 states and 8157 transitions. Second operand has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 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) [2021-10-07 15:14:33,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:14:33,840 INFO L93 Difference]: Finished difference Result 2680 states and 9188 transitions. [2021-10-07 15:14:33,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:14:33,840 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 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 20 [2021-10-07 15:14:33,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:14:33,846 INFO L225 Difference]: With dead ends: 2680 [2021-10-07 15:14:33,846 INFO L226 Difference]: Without dead ends: 2672 [2021-10-07 15:14:33,846 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1535.4ms TimeCoverageRelationStatistics Valid=196, Invalid=1210, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 15:14:33,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2021-10-07 15:14:33,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 2203. [2021-10-07 15:14:33,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 2179 states have (on average 3.7361174850849013) internal successors, (8141), 2202 states have internal predecessors, (8141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:14:33,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 8141 transitions. [2021-10-07 15:14:33,882 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 8141 transitions. Word has length 20 [2021-10-07 15:14:33,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:14:33,882 INFO L470 AbstractCegarLoop]: Abstraction has 2203 states and 8141 transitions. [2021-10-07 15:14:33,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 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) [2021-10-07 15:14:33,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 8141 transitions. [2021-10-07 15:14:33,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:14:33,884 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:14:33,884 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:14:33,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2021-10-07 15:14:34,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:34,085 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:14:34,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:14:34,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1857119809, now seen corresponding path program 4 times [2021-10-07 15:14:34,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:14:34,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119941008] [2021-10-07 15:14:34,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:14:34,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:14:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:34,644 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:14:34,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:14:34,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119941008] [2021-10-07 15:14:34,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119941008] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:34,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287852673] [2021-10-07 15:14:34,645 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:14:34,645 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:34,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:14:34,646 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) [2021-10-07 15:14:34,647 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 [2021-10-07 15:14:36,573 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:14:36,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:14:36,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-07 15:14:36,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:36,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-07 15:14:36,868 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:14:36,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-07 15:14:37,005 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:14:37,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:14:37,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-07 15:14:37,079 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-07 15:14:37,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287852673] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:37,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:37,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 21 [2021-10-07 15:14:37,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518295804] [2021-10-07 15:14:37,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:14:37,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:37,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:14:37,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:14:37,081 INFO L87 Difference]: Start difference. First operand 2203 states and 8141 transitions. Second operand has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 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) [2021-10-07 15:14:39,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:14:39,608 INFO L93 Difference]: Finished difference Result 3696 states and 12312 transitions. [2021-10-07 15:14:39,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 15:14:39,608 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 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 20 [2021-10-07 15:14:39,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:14:39,616 INFO L225 Difference]: With dead ends: 3696 [2021-10-07 15:14:39,617 INFO L226 Difference]: Without dead ends: 3672 [2021-10-07 15:14:39,617 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 1642.1ms TimeCoverageRelationStatistics Valid=214, Invalid=1766, Unknown=0, NotChecked=0, Total=1980 [2021-10-07 15:14:39,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3672 states. [2021-10-07 15:14:39,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3672 to 2452. [2021-10-07 15:14:39,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 2428 states have (on average 3.806013179571664) internal successors, (9241), 2451 states have internal predecessors, (9241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:14:39,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 9241 transitions. [2021-10-07 15:14:39,672 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 9241 transitions. Word has length 20 [2021-10-07 15:14:39,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:14:39,672 INFO L470 AbstractCegarLoop]: Abstraction has 2452 states and 9241 transitions. [2021-10-07 15:14:39,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 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) [2021-10-07 15:14:39,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 9241 transitions. [2021-10-07 15:14:39,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:14:39,674 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:14:39,674 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:14:39,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2021-10-07 15:14:39,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:39,875 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:14:39,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:14:39,876 INFO L82 PathProgramCache]: Analyzing trace with hash -2035529743, now seen corresponding path program 4 times [2021-10-07 15:14:39,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:14:39,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210544168] [2021-10-07 15:14:39,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:14:39,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:14:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:40,736 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:14:40,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:14:40,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210544168] [2021-10-07 15:14:40,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210544168] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:40,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920276507] [2021-10-07 15:14:40,737 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:14:40,738 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:40,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:14:40,740 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) [2021-10-07 15:14:40,741 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 [2021-10-07 15:14:42,685 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:14:42,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:14:42,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-07 15:14:42,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:42,842 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-07 15:14:42,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 847 treesize of output 861 [2021-10-07 15:14:44,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-07 15:14:44,647 INFO L354 Elim1Store]: treesize reduction 128, result has 36.3 percent of original size [2021-10-07 15:14:44,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 68 treesize of output 124 [2021-10-07 15:14:44,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-07 15:14:44,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-07 15:14:44,996 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-07 15:14:44,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 40 [2021-10-07 15:14:45,095 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 15:14:45,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-07 15:14:45,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:14:45,542 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-10-07 15:14:45,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 38 [2021-10-07 15:14:45,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:14:45,893 INFO L354 Elim1Store]: treesize reduction 63, result has 24.1 percent of original size [2021-10-07 15:14:45,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 42 [2021-10-07 15:14:45,981 INFO L354 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2021-10-07 15:14:45,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 21 [2021-10-07 15:14:46,045 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:14:46,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920276507] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:46,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:46,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 27 [2021-10-07 15:14:46,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683527537] [2021-10-07 15:14:46,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-07 15:14:46,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:46,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-07 15:14:46,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=737, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:14:46,048 INFO L87 Difference]: Start difference. First operand 2452 states and 9241 transitions. Second operand has 29 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 28 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) [2021-10-07 15:14:47,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:14:47,939 INFO L93 Difference]: Finished difference Result 2559 states and 9461 transitions. [2021-10-07 15:14:47,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:14:47,939 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 28 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 20 [2021-10-07 15:14:47,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:14:47,945 INFO L225 Difference]: With dead ends: 2559 [2021-10-07 15:14:47,945 INFO L226 Difference]: Without dead ends: 2559 [2021-10-07 15:14:47,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 2142.5ms TimeCoverageRelationStatistics Valid=151, Invalid=1489, Unknown=0, NotChecked=0, Total=1640 [2021-10-07 15:14:47,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2559 states. [2021-10-07 15:14:47,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2559 to 2414. [2021-10-07 15:14:47,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2414 states, 2390 states have (on average 3.8297071129707114) internal successors, (9153), 2413 states have internal predecessors, (9153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:14:47,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2414 states to 2414 states and 9153 transitions. [2021-10-07 15:14:47,986 INFO L78 Accepts]: Start accepts. Automaton has 2414 states and 9153 transitions. Word has length 20 [2021-10-07 15:14:47,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:14:47,986 INFO L470 AbstractCegarLoop]: Abstraction has 2414 states and 9153 transitions. [2021-10-07 15:14:47,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 28 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) [2021-10-07 15:14:47,986 INFO L276 IsEmpty]: Start isEmpty. Operand 2414 states and 9153 transitions. [2021-10-07 15:14:47,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:14:47,988 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:14:47,988 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:14:48,019 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 [2021-10-07 15:14:48,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:48,189 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:14:48,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:14:48,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1620976397, now seen corresponding path program 5 times [2021-10-07 15:14:48,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:14:48,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925987677] [2021-10-07 15:14:48,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:14:48,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:14:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:48,692 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:14:48,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:14:48,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925987677] [2021-10-07 15:14:48,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925987677] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:48,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22890248] [2021-10-07 15:14:48,693 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:14:48,693 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:48,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:14:48,694 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) [2021-10-07 15:14:48,695 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 [2021-10-07 15:14:50,651 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:14:50,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:14:50,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-07 15:14:50,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:50,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 339 treesize of output 323 [2021-10-07 15:14:51,029 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:14:51,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:14:51,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-10-07 15:14:51,104 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-07 15:14:51,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22890248] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:51,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:51,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 18 [2021-10-07 15:14:51,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746905993] [2021-10-07 15:14:51,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 15:14:51,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:51,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 15:14:51,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:14:51,106 INFO L87 Difference]: Start difference. First operand 2414 states and 9153 transitions. Second operand has 20 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 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) [2021-10-07 15:14:52,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:14:52,838 INFO L93 Difference]: Finished difference Result 5039 states and 17802 transitions. [2021-10-07 15:14:52,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:14:52,839 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 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 20 [2021-10-07 15:14:52,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:14:52,851 INFO L225 Difference]: With dead ends: 5039 [2021-10-07 15:14:52,851 INFO L226 Difference]: Without dead ends: 5023 [2021-10-07 15:14:52,852 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 1247.8ms TimeCoverageRelationStatistics Valid=206, Invalid=1276, Unknown=0, NotChecked=0, Total=1482 [2021-10-07 15:14:52,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5023 states. [2021-10-07 15:14:52,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5023 to 3100. [2021-10-07 15:14:52,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 3076 states have (on average 3.8527308192457737) internal successors, (11851), 3099 states have internal predecessors, (11851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:14:52,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 11851 transitions. [2021-10-07 15:14:52,963 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 11851 transitions. Word has length 20 [2021-10-07 15:14:52,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:14:52,964 INFO L470 AbstractCegarLoop]: Abstraction has 3100 states and 11851 transitions. [2021-10-07 15:14:52,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 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) [2021-10-07 15:14:52,964 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 11851 transitions. [2021-10-07 15:14:52,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:14:52,965 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:14:52,965 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:14:52,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2021-10-07 15:14:53,166 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,SelfDestructingSolverStorable86 [2021-10-07 15:14:53,166 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:14:53,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:14:53,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1695128936, now seen corresponding path program 9 times [2021-10-07 15:14:53,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:14:53,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247209040] [2021-10-07 15:14:53,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:14:53,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:14:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:53,249 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:14:53,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:14:53,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247209040] [2021-10-07 15:14:53,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247209040] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:53,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827137133] [2021-10-07 15:14:53,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:14:53,251 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:53,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:14:53,252 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) [2021-10-07 15:14:53,253 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 [2021-10-07 15:14:55,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:14:55,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:14:55,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:14:55,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:55,308 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:14:55,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827137133] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:55,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:55,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 11 [2021-10-07 15:14:55,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929105327] [2021-10-07 15:14:55,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:14:55,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:55,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:14:55,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:14:55,309 INFO L87 Difference]: Start difference. First operand 3100 states and 11851 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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) [2021-10-07 15:14:55,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:14:55,820 INFO L93 Difference]: Finished difference Result 9860 states and 34893 transitions. [2021-10-07 15:14:55,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:14:55,821 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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 20 [2021-10-07 15:14:55,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:14:55,846 INFO L225 Difference]: With dead ends: 9860 [2021-10-07 15:14:55,846 INFO L226 Difference]: Without dead ends: 9278 [2021-10-07 15:14:55,847 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 249.9ms TimeCoverageRelationStatistics Valid=179, Invalid=471, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:14:55,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9278 states. [2021-10-07 15:14:56,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9278 to 4548. [2021-10-07 15:14:56,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4548 states, 4532 states have (on average 4.079655781112092) internal successors, (18489), 4547 states have internal predecessors, (18489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:14:56,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4548 states to 4548 states and 18489 transitions. [2021-10-07 15:14:56,032 INFO L78 Accepts]: Start accepts. Automaton has 4548 states and 18489 transitions. Word has length 20 [2021-10-07 15:14:56,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:14:56,033 INFO L470 AbstractCegarLoop]: Abstraction has 4548 states and 18489 transitions. [2021-10-07 15:14:56,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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) [2021-10-07 15:14:56,033 INFO L276 IsEmpty]: Start isEmpty. Operand 4548 states and 18489 transitions. [2021-10-07 15:14:56,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:14:56,034 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:14:56,035 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:14:56,066 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 [2021-10-07 15:14:56,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:56,236 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:14:56,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:14:56,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1118522007, now seen corresponding path program 7 times [2021-10-07 15:14:56,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:14:56,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226761543] [2021-10-07 15:14:56,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:14:56,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:14:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:57,570 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:14:57,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:14:57,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226761543] [2021-10-07 15:14:57,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226761543] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:57,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563631206] [2021-10-07 15:14:57,571 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:14:57,571 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:57,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:14:57,573 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) [2021-10-07 15:14:57,574 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 [2021-10-07 15:14:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:59,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 15:14:59,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:59,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-07 15:14:59,834 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-07 15:14:59,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563631206] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:59,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:59,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 20 [2021-10-07 15:14:59,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484923177] [2021-10-07 15:14:59,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 15:14:59,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:59,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 15:14:59,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:14:59,837 INFO L87 Difference]: Start difference. First operand 4548 states and 18489 transitions. Second operand has 22 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 21 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) [2021-10-07 15:15:02,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:15:02,501 INFO L93 Difference]: Finished difference Result 7455 states and 27590 transitions. [2021-10-07 15:15:02,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-07 15:15:02,502 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 21 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 20 [2021-10-07 15:15:02,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:15:02,520 INFO L225 Difference]: With dead ends: 7455 [2021-10-07 15:15:02,520 INFO L226 Difference]: Without dead ends: 7423 [2021-10-07 15:15:02,520 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 1996.1ms TimeCoverageRelationStatistics Valid=328, Invalid=2534, Unknown=0, NotChecked=0, Total=2862 [2021-10-07 15:15:02,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7423 states. [2021-10-07 15:15:02,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7423 to 4664. [2021-10-07 15:15:02,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4664 states, 4648 states have (on average 4.088855421686747) internal successors, (19005), 4663 states have internal predecessors, (19005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:15:02,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4664 states to 4664 states and 19005 transitions. [2021-10-07 15:15:02,655 INFO L78 Accepts]: Start accepts. Automaton has 4664 states and 19005 transitions. Word has length 20 [2021-10-07 15:15:02,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:15:02,655 INFO L470 AbstractCegarLoop]: Abstraction has 4664 states and 19005 transitions. [2021-10-07 15:15:02,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 21 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) [2021-10-07 15:15:02,656 INFO L276 IsEmpty]: Start isEmpty. Operand 4664 states and 19005 transitions. [2021-10-07 15:15:02,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:15:02,657 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:15:02,657 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:15:02,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2021-10-07 15:15:02,858 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,SelfDestructingSolverStorable88 [2021-10-07 15:15:02,858 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:15:02,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:15:02,859 INFO L82 PathProgramCache]: Analyzing trace with hash -403444751, now seen corresponding path program 7 times [2021-10-07 15:15:02,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:15:02,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748812190] [2021-10-07 15:15:02,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:15:02,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:15:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:15:04,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:15:04,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748812190] [2021-10-07 15:15:04,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748812190] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:04,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123218062] [2021-10-07 15:15:04,743 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:15:04,743 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:04,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:15:04,749 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) [2021-10-07 15:15:04,765 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 [2021-10-07 15:15:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:06,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-07 15:15:06,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:15:07,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-07 15:15:07,198 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-07 15:15:07,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123218062] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:07,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:15:07,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 23 [2021-10-07 15:15:07,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807521079] [2021-10-07 15:15:07,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:15:07,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:15:07,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:15:07,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:15:07,201 INFO L87 Difference]: Start difference. First operand 4664 states and 19005 transitions. Second operand has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 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) [2021-10-07 15:15:10,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:15:10,062 INFO L93 Difference]: Finished difference Result 11129 states and 41592 transitions. [2021-10-07 15:15:10,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-07 15:15:10,063 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 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 20 [2021-10-07 15:15:10,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:15:10,095 INFO L225 Difference]: With dead ends: 11129 [2021-10-07 15:15:10,095 INFO L226 Difference]: Without dead ends: 11091 [2021-10-07 15:15:10,095 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 2183.8ms TimeCoverageRelationStatistics Valid=292, Invalid=2060, Unknown=0, NotChecked=0, Total=2352 [2021-10-07 15:15:10,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11091 states. [2021-10-07 15:15:10,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11091 to 4278. [2021-10-07 15:15:10,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4278 states, 4262 states have (on average 4.06640075082121) internal successors, (17331), 4277 states have internal predecessors, (17331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:15:10,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 17331 transitions. [2021-10-07 15:15:10,221 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 17331 transitions. Word has length 20 [2021-10-07 15:15:10,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:15:10,221 INFO L470 AbstractCegarLoop]: Abstraction has 4278 states and 17331 transitions. [2021-10-07 15:15:10,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 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) [2021-10-07 15:15:10,221 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 17331 transitions. [2021-10-07 15:15:10,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:15:10,223 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:15:10,223 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:15:10,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2021-10-07 15:15:10,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-10-07 15:15:10,424 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:15:10,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:15:10,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1269354494, now seen corresponding path program 5 times [2021-10-07 15:15:10,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:15:10,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301882889] [2021-10-07 15:15:10,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:15:10,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:15:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:11,786 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:11,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:15:11,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301882889] [2021-10-07 15:15:11,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301882889] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:11,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230358586] [2021-10-07 15:15:11,789 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:15:11,789 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:11,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:15:11,790 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) [2021-10-07 15:15:11,792 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 [2021-10-07 15:15:13,854 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:15:13,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:15:13,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-07 15:15:13,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:15:13,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 323 treesize of output 315 [2021-10-07 15:15:14,504 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-07 15:15:14,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 44 [2021-10-07 15:15:14,582 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-07 15:15:14,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 16 [2021-10-07 15:15:14,627 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:15:14,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230358586] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:14,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:15:14,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 25 [2021-10-07 15:15:14,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262076187] [2021-10-07 15:15:14,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-07 15:15:14,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:15:14,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-07 15:15:14,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:15:14,629 INFO L87 Difference]: Start difference. First operand 4278 states and 17331 transitions. Second operand has 27 states, 26 states have (on average 1.5) internal successors, (39), 26 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) [2021-10-07 15:15:17,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:15:17,652 INFO L93 Difference]: Finished difference Result 6389 states and 24437 transitions. [2021-10-07 15:15:17,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:15:17,653 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.5) internal successors, (39), 26 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 20 [2021-10-07 15:15:17,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:15:17,670 INFO L225 Difference]: With dead ends: 6389 [2021-10-07 15:15:17,670 INFO L226 Difference]: Without dead ends: 6389 [2021-10-07 15:15:17,670 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 2466.5ms TimeCoverageRelationStatistics Valid=198, Invalid=1782, Unknown=0, NotChecked=0, Total=1980 [2021-10-07 15:15:17,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6389 states. [2021-10-07 15:15:17,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6389 to 4330. [2021-10-07 15:15:17,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4330 states, 4314 states have (on average 4.055401019935095) internal successors, (17495), 4329 states have internal predecessors, (17495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:15:17,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4330 states to 4330 states and 17495 transitions. [2021-10-07 15:15:17,758 INFO L78 Accepts]: Start accepts. Automaton has 4330 states and 17495 transitions. Word has length 20 [2021-10-07 15:15:17,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:15:17,759 INFO L470 AbstractCegarLoop]: Abstraction has 4330 states and 17495 transitions. [2021-10-07 15:15:17,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.5) internal successors, (39), 26 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) [2021-10-07 15:15:17,759 INFO L276 IsEmpty]: Start isEmpty. Operand 4330 states and 17495 transitions. [2021-10-07 15:15:17,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:15:17,761 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:15:17,761 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:15:17,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2021-10-07 15:15:17,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:17,962 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:15:17,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:15:17,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1269354539, now seen corresponding path program 5 times [2021-10-07 15:15:17,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:15:17,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387267415] [2021-10-07 15:15:17,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:15:17,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:15:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:18,853 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:15:18,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:15:18,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387267415] [2021-10-07 15:15:18,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387267415] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:18,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353800633] [2021-10-07 15:15:18,854 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:15:18,854 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:18,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:15:18,855 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) [2021-10-07 15:15:18,856 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 [2021-10-07 15:15:20,926 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:15:20,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:15:20,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-07 15:15:20,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:15:20,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-07 15:15:21,454 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-07 15:15:21,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 44 [2021-10-07 15:15:21,518 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-07 15:15:21,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 13 [2021-10-07 15:15:21,551 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:15:21,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353800633] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:21,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:15:21,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 21 [2021-10-07 15:15:21,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779863734] [2021-10-07 15:15:21,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:15:21,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:15:21,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:15:21,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:15:21,553 INFO L87 Difference]: Start difference. First operand 4330 states and 17495 transitions. Second operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 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) [2021-10-07 15:15:22,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:15:22,642 INFO L93 Difference]: Finished difference Result 4797 states and 18881 transitions. [2021-10-07 15:15:22,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 15:15:22,642 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 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 20 [2021-10-07 15:15:22,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:15:22,656 INFO L225 Difference]: With dead ends: 4797 [2021-10-07 15:15:22,656 INFO L226 Difference]: Without dead ends: 4785 [2021-10-07 15:15:22,656 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1157.4ms TimeCoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 15:15:22,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4785 states. [2021-10-07 15:15:22,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4785 to 4330. [2021-10-07 15:15:22,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4330 states, 4314 states have (on average 4.055401019935095) internal successors, (17495), 4329 states have internal predecessors, (17495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:15:22,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4330 states to 4330 states and 17495 transitions. [2021-10-07 15:15:22,819 INFO L78 Accepts]: Start accepts. Automaton has 4330 states and 17495 transitions. Word has length 20 [2021-10-07 15:15:22,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:15:22,819 INFO L470 AbstractCegarLoop]: Abstraction has 4330 states and 17495 transitions. [2021-10-07 15:15:22,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 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) [2021-10-07 15:15:22,820 INFO L276 IsEmpty]: Start isEmpty. Operand 4330 states and 17495 transitions. [2021-10-07 15:15:22,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:15:22,822 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:15:22,822 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:15:22,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2021-10-07 15:15:23,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:23,023 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:15:23,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:15:23,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1267864989, now seen corresponding path program 4 times [2021-10-07 15:15:23,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:15:23,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658628731] [2021-10-07 15:15:23,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:15:23,026 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:15:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:23,958 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:15:23,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:15:23,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658628731] [2021-10-07 15:15:23,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658628731] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:23,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222376652] [2021-10-07 15:15:23,959 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:15:23,959 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:23,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:15:23,961 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) [2021-10-07 15:15:23,962 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 [2021-10-07 15:15:26,114 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:15:26,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:15:26,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-07 15:15:26,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:15:26,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-07 15:15:26,737 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-07 15:15:26,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 44 [2021-10-07 15:15:26,790 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-07 15:15:26,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 13 [2021-10-07 15:15:26,826 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:15:26,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222376652] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:26,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:15:26,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 23 [2021-10-07 15:15:26,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846020140] [2021-10-07 15:15:26,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:15:26,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:15:26,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:15:26,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:15:26,828 INFO L87 Difference]: Start difference. First operand 4330 states and 17495 transitions. Second operand has 25 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 24 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) [2021-10-07 15:15:28,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:15:28,722 INFO L93 Difference]: Finished difference Result 6595 states and 24963 transitions. [2021-10-07 15:15:28,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:15:28,723 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 24 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 20 [2021-10-07 15:15:28,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:15:28,741 INFO L225 Difference]: With dead ends: 6595 [2021-10-07 15:15:28,741 INFO L226 Difference]: Without dead ends: 6573 [2021-10-07 15:15:28,742 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 1823.5ms TimeCoverageRelationStatistics Valid=217, Invalid=1589, Unknown=0, NotChecked=0, Total=1806 [2021-10-07 15:15:28,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6573 states. [2021-10-07 15:15:28,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6573 to 4775. [2021-10-07 15:15:28,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4775 states, 4759 states have (on average 4.034040764866568) internal successors, (19198), 4774 states have internal predecessors, (19198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:15:28,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4775 states to 4775 states and 19198 transitions. [2021-10-07 15:15:28,845 INFO L78 Accepts]: Start accepts. Automaton has 4775 states and 19198 transitions. Word has length 20 [2021-10-07 15:15:28,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:15:28,846 INFO L470 AbstractCegarLoop]: Abstraction has 4775 states and 19198 transitions. [2021-10-07 15:15:28,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 24 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) [2021-10-07 15:15:28,846 INFO L276 IsEmpty]: Start isEmpty. Operand 4775 states and 19198 transitions. [2021-10-07 15:15:28,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:15:28,848 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:15:28,848 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:15:28,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2021-10-07 15:15:29,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:29,049 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:15:29,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:15:29,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1312253579, now seen corresponding path program 6 times [2021-10-07 15:15:29,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:15:29,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043804462] [2021-10-07 15:15:29,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:15:29,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:15:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:30,379 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:30,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:15:30,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043804462] [2021-10-07 15:15:30,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043804462] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:30,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315678555] [2021-10-07 15:15:30,380 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:15:30,381 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:30,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:15:30,382 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) [2021-10-07 15:15:30,384 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 [2021-10-07 15:15:32,540 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:15:32,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:15:32,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-07 15:15:32,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:15:32,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-07 15:15:32,930 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:15:32,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:15:32,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-07 15:15:33,025 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-07 15:15:33,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315678555] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:33,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:15:33,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 24 [2021-10-07 15:15:33,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104742177] [2021-10-07 15:15:33,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 15:15:33,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:15:33,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 15:15:33,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:15:33,027 INFO L87 Difference]: Start difference. First operand 4775 states and 19198 transitions. Second operand has 26 states, 25 states have (on average 1.56) internal successors, (39), 25 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) [2021-10-07 15:15:35,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:15:35,377 INFO L93 Difference]: Finished difference Result 6135 states and 23390 transitions. [2021-10-07 15:15:35,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:15:35,378 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.56) internal successors, (39), 25 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 20 [2021-10-07 15:15:35,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:15:35,489 INFO L225 Difference]: With dead ends: 6135 [2021-10-07 15:15:35,489 INFO L226 Difference]: Without dead ends: 6115 [2021-10-07 15:15:35,489 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 2053.1ms TimeCoverageRelationStatistics Valid=197, Invalid=1783, Unknown=0, NotChecked=0, Total=1980 [2021-10-07 15:15:35,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6115 states. [2021-10-07 15:15:35,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6115 to 4825. [2021-10-07 15:15:35,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4825 states, 4809 states have (on average 4.03243917654398) internal successors, (19392), 4824 states have internal predecessors, (19392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:15:35,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4825 states to 4825 states and 19392 transitions. [2021-10-07 15:15:35,588 INFO L78 Accepts]: Start accepts. Automaton has 4825 states and 19392 transitions. Word has length 20 [2021-10-07 15:15:35,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:15:35,588 INFO L470 AbstractCegarLoop]: Abstraction has 4825 states and 19392 transitions. [2021-10-07 15:15:35,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.56) internal successors, (39), 25 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) [2021-10-07 15:15:35,588 INFO L276 IsEmpty]: Start isEmpty. Operand 4825 states and 19392 transitions. [2021-10-07 15:15:35,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:15:35,590 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:15:35,590 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:15:35,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2021-10-07 15:15:35,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:35,792 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:15:35,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:15:35,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1266077484, now seen corresponding path program 6 times [2021-10-07 15:15:35,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:15:35,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501263579] [2021-10-07 15:15:35,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:15:35,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:15:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:37,505 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:15:37,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:15:37,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501263579] [2021-10-07 15:15:37,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501263579] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:37,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149693776] [2021-10-07 15:15:37,507 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:15:37,507 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:37,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:15:37,508 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) [2021-10-07 15:15:37,510 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 [2021-10-07 15:15:39,710 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:15:39,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:15:39,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-07 15:15:39,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:15:39,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-07 15:15:40,108 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:15:40,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:15:40,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-07 15:15:40,202 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-07 15:15:40,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149693776] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:40,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:15:40,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 23 [2021-10-07 15:15:40,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134242708] [2021-10-07 15:15:40,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:15:40,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:15:40,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:15:40,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:15:40,205 INFO L87 Difference]: Start difference. First operand 4825 states and 19392 transitions. Second operand has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 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) [2021-10-07 15:15:42,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:15:42,766 INFO L93 Difference]: Finished difference Result 11229 states and 40371 transitions. [2021-10-07 15:15:42,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 15:15:42,766 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 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 20 [2021-10-07 15:15:42,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:15:42,795 INFO L225 Difference]: With dead ends: 11229 [2021-10-07 15:15:42,796 INFO L226 Difference]: Without dead ends: 11193 [2021-10-07 15:15:42,796 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 2241.9ms TimeCoverageRelationStatistics Valid=290, Invalid=2160, Unknown=0, NotChecked=0, Total=2450 [2021-10-07 15:15:42,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11193 states. [2021-10-07 15:15:42,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11193 to 3590. [2021-10-07 15:15:42,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3590 states, 3574 states have (on average 3.784834918858422) internal successors, (13527), 3589 states have internal predecessors, (13527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:15:42,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 13527 transitions. [2021-10-07 15:15:42,915 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 13527 transitions. Word has length 20 [2021-10-07 15:15:42,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:15:42,915 INFO L470 AbstractCegarLoop]: Abstraction has 3590 states and 13527 transitions. [2021-10-07 15:15:42,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 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) [2021-10-07 15:15:42,915 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 13527 transitions. [2021-10-07 15:15:42,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:15:42,917 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:15:42,917 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:15:42,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2021-10-07 15:15:43,118 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,SelfDestructingSolverStorable94 [2021-10-07 15:15:43,118 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:15:43,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:15:43,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1267483472, now seen corresponding path program 8 times [2021-10-07 15:15:43,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:15:43,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137113816] [2021-10-07 15:15:43,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:15:43,120 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:15:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:43,654 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:15:43,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:15:43,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137113816] [2021-10-07 15:15:43,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137113816] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:43,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316009031] [2021-10-07 15:15:43,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:15:43,655 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:43,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:15:43,656 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) [2021-10-07 15:15:43,657 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 [2021-10-07 15:15:45,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:15:45,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:15:45,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-07 15:15:45,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:15:46,677 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-10-07 15:15:46,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 22 [2021-10-07 15:15:46,712 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:15:46,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316009031] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:46,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:15:46,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 23 [2021-10-07 15:15:46,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596751792] [2021-10-07 15:15:46,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:15:46,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:15:46,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:15:46,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:15:46,714 INFO L87 Difference]: Start difference. First operand 3590 states and 13527 transitions. Second operand has 25 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 24 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) [2021-10-07 15:15:49,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:15:49,696 INFO L93 Difference]: Finished difference Result 6022 states and 21461 transitions. [2021-10-07 15:15:49,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:15:49,696 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 24 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 20 [2021-10-07 15:15:49,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:15:49,710 INFO L225 Difference]: With dead ends: 6022 [2021-10-07 15:15:49,710 INFO L226 Difference]: Without dead ends: 6002 [2021-10-07 15:15:49,711 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 2470.6ms TimeCoverageRelationStatistics Valid=250, Invalid=1912, Unknown=0, NotChecked=0, Total=2162 [2021-10-07 15:15:49,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2021-10-07 15:15:49,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 4280. [2021-10-07 15:15:49,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4280 states, 4264 states have (on average 3.772748592870544) internal successors, (16087), 4279 states have internal predecessors, (16087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:15:49,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4280 states to 4280 states and 16087 transitions. [2021-10-07 15:15:49,793 INFO L78 Accepts]: Start accepts. Automaton has 4280 states and 16087 transitions. Word has length 20 [2021-10-07 15:15:49,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:15:49,793 INFO L470 AbstractCegarLoop]: Abstraction has 4280 states and 16087 transitions. [2021-10-07 15:15:49,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 24 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) [2021-10-07 15:15:49,793 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states and 16087 transitions. [2021-10-07 15:15:49,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:15:49,795 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:15:49,795 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:15:49,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2021-10-07 15:15:49,996 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,SelfDestructingSolverStorable95 [2021-10-07 15:15:49,996 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:15:49,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:15:49,997 INFO L82 PathProgramCache]: Analyzing trace with hash 534788466, now seen corresponding path program 7 times [2021-10-07 15:15:49,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:15:49,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318615517] [2021-10-07 15:15:49,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:15:49,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:15:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:50,824 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:15:50,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:15:50,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318615517] [2021-10-07 15:15:50,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318615517] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:50,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573462009] [2021-10-07 15:15:50,825 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:15:50,825 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:50,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:15:50,826 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) [2021-10-07 15:15:50,827 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 [2021-10-07 15:15:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:52,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-07 15:15:52,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:15:52,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-07 15:15:53,438 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:15:53,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:15:53,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-07 15:15:53,520 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:15:53,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573462009] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:53,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:15:53,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 23 [2021-10-07 15:15:53,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195821186] [2021-10-07 15:15:53,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:15:53,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:15:53,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:15:53,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:15:53,522 INFO L87 Difference]: Start difference. First operand 4280 states and 16087 transitions. Second operand has 25 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 24 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) [2021-10-07 15:15:55,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:15:55,569 INFO L93 Difference]: Finished difference Result 11195 states and 40461 transitions. [2021-10-07 15:15:55,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 15:15:55,570 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 24 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 20 [2021-10-07 15:15:55,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:15:55,600 INFO L225 Difference]: With dead ends: 11195 [2021-10-07 15:15:55,601 INFO L226 Difference]: Without dead ends: 11195 [2021-10-07 15:15:55,601 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 1350.3ms TimeCoverageRelationStatistics Valid=209, Invalid=1597, Unknown=0, NotChecked=0, Total=1806 [2021-10-07 15:15:55,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11195 states. [2021-10-07 15:15:55,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11195 to 4266. [2021-10-07 15:15:55,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4266 states, 4250 states have (on average 3.7661176470588233) internal successors, (16006), 4265 states have internal predecessors, (16006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:15:55,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4266 states to 4266 states and 16006 transitions. [2021-10-07 15:15:55,744 INFO L78 Accepts]: Start accepts. Automaton has 4266 states and 16006 transitions. Word has length 20 [2021-10-07 15:15:55,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:15:55,744 INFO L470 AbstractCegarLoop]: Abstraction has 4266 states and 16006 transitions. [2021-10-07 15:15:55,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 24 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) [2021-10-07 15:15:55,744 INFO L276 IsEmpty]: Start isEmpty. Operand 4266 states and 16006 transitions. [2021-10-07 15:15:55,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:15:55,746 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:15:55,746 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:15:55,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2021-10-07 15:15:55,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,92 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:55,947 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:15:55,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:15:55,948 INFO L82 PathProgramCache]: Analyzing trace with hash 534788421, now seen corresponding path program 5 times [2021-10-07 15:15:55,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:15:55,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407745491] [2021-10-07 15:15:55,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:15:55,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:15:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:56,771 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:15:56,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:15:56,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407745491] [2021-10-07 15:15:56,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407745491] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:56,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974030946] [2021-10-07 15:15:56,772 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:15:56,772 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:56,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:15:56,773 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) [2021-10-07 15:15:56,773 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 [2021-10-07 15:15:58,968 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:15:58,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:15:58,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-07 15:15:58,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:15:58,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 986 treesize of output 970 [2021-10-07 15:15:59,500 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-07 15:15:59,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 44 [2021-10-07 15:15:59,555 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-07 15:15:59,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 10 [2021-10-07 15:15:59,589 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:15:59,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974030946] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:59,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:15:59,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 21 [2021-10-07 15:15:59,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153236092] [2021-10-07 15:15:59,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:15:59,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:15:59,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:15:59,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:15:59,591 INFO L87 Difference]: Start difference. First operand 4266 states and 16006 transitions. Second operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 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) [2021-10-07 15:16:00,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:16:00,975 INFO L93 Difference]: Finished difference Result 5698 states and 20479 transitions. [2021-10-07 15:16:00,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:16:00,976 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 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 20 [2021-10-07 15:16:00,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:16:00,990 INFO L225 Difference]: With dead ends: 5698 [2021-10-07 15:16:00,990 INFO L226 Difference]: Without dead ends: 5680 [2021-10-07 15:16:00,991 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1240.0ms TimeCoverageRelationStatistics Valid=162, Invalid=1170, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 15:16:00,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5680 states. [2021-10-07 15:16:01,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5680 to 4277. [2021-10-07 15:16:01,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4277 states, 4261 states have (on average 3.7601501994836894) internal successors, (16022), 4276 states have internal predecessors, (16022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:16:01,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4277 states to 4277 states and 16022 transitions. [2021-10-07 15:16:01,076 INFO L78 Accepts]: Start accepts. Automaton has 4277 states and 16022 transitions. Word has length 20 [2021-10-07 15:16:01,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:16:01,076 INFO L470 AbstractCegarLoop]: Abstraction has 4277 states and 16022 transitions. [2021-10-07 15:16:01,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 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) [2021-10-07 15:16:01,076 INFO L276 IsEmpty]: Start isEmpty. Operand 4277 states and 16022 transitions. [2021-10-07 15:16:01,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:16:01,078 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:16:01,078 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:16:01,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2021-10-07 15:16:01,279 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,SelfDestructingSolverStorable97 [2021-10-07 15:16:01,279 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:16:01,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:16:01,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1443614653, now seen corresponding path program 7 times [2021-10-07 15:16:01,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:16:01,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70503076] [2021-10-07 15:16:01,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:16:01,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:16:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:16:02,438 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:16:02,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:16:02,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70503076] [2021-10-07 15:16:02,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70503076] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:02,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421625640] [2021-10-07 15:16:02,439 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:16:02,439 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:16:02,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:16:02,444 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) [2021-10-07 15:16:02,445 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 [2021-10-07 15:16:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:16:04,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-07 15:16:04,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:16:04,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 133 [2021-10-07 15:16:05,092 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:16:05,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-07 15:16:05,261 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:16:05,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:16:05,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-07 15:16:05,352 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:16:05,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421625640] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:05,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:16:05,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 26 [2021-10-07 15:16:05,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349579604] [2021-10-07 15:16:05,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 15:16:05,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:16:05,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 15:16:05,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:16:05,354 INFO L87 Difference]: Start difference. First operand 4277 states and 16022 transitions. Second operand has 28 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 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) [2021-10-07 15:16:07,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:16:07,210 INFO L93 Difference]: Finished difference Result 5627 states and 19601 transitions. [2021-10-07 15:16:07,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:16:07,210 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 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 20 [2021-10-07 15:16:07,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:16:07,223 INFO L225 Difference]: With dead ends: 5627 [2021-10-07 15:16:07,223 INFO L226 Difference]: Without dead ends: 5603 [2021-10-07 15:16:07,224 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1571.5ms TimeCoverageRelationStatistics Valid=157, Invalid=1403, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 15:16:07,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5603 states. [2021-10-07 15:16:07,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5603 to 4185. [2021-10-07 15:16:07,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4185 states, 4169 states have (on average 3.762532981530343) internal successors, (15686), 4184 states have internal predecessors, (15686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:16:07,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4185 states to 4185 states and 15686 transitions. [2021-10-07 15:16:07,306 INFO L78 Accepts]: Start accepts. Automaton has 4185 states and 15686 transitions. Word has length 20 [2021-10-07 15:16:07,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:16:07,307 INFO L470 AbstractCegarLoop]: Abstraction has 4185 states and 15686 transitions. [2021-10-07 15:16:07,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 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) [2021-10-07 15:16:07,307 INFO L276 IsEmpty]: Start isEmpty. Operand 4185 states and 15686 transitions. [2021-10-07 15:16:07,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:16:07,310 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:16:07,310 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:16:07,341 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 [2021-10-07 15:16:07,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,94 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:16:07,511 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:16:07,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:16:07,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1622024542, now seen corresponding path program 8 times [2021-10-07 15:16:07,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:16:07,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531606833] [2021-10-07 15:16:07,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:16:07,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:16:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:16:09,182 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:16:09,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:16:09,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531606833] [2021-10-07 15:16:09,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531606833] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:09,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611982477] [2021-10-07 15:16:09,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:16:09,183 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:16:09,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:16:09,184 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) [2021-10-07 15:16:09,185 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 [2021-10-07 15:16:11,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:16:11,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:16:11,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-07 15:16:11,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:16:11,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 158 [2021-10-07 15:16:11,922 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:16:11,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-07 15:16:12,102 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:16:12,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:16:12,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-07 15:16:12,216 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:16:12,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611982477] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:12,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:16:12,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 26 [2021-10-07 15:16:12,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002309517] [2021-10-07 15:16:12,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 15:16:12,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:16:12,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 15:16:12,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:16:12,218 INFO L87 Difference]: Start difference. First operand 4185 states and 15686 transitions. Second operand has 28 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 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) [2021-10-07 15:16:17,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:16:17,315 INFO L93 Difference]: Finished difference Result 9912 states and 33870 transitions. [2021-10-07 15:16:17,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-07 15:16:17,315 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 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 20 [2021-10-07 15:16:17,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:16:17,341 INFO L225 Difference]: With dead ends: 9912 [2021-10-07 15:16:17,342 INFO L226 Difference]: Without dead ends: 9912 [2021-10-07 15:16:17,342 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 975 ImplicationChecksByTransitivity, 3814.2ms TimeCoverageRelationStatistics Valid=478, Invalid=4352, Unknown=0, NotChecked=0, Total=4830 [2021-10-07 15:16:17,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9912 states. [2021-10-07 15:16:17,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9912 to 3912. [2021-10-07 15:16:17,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3912 states, 3896 states have (on average 3.7315195071868583) internal successors, (14538), 3911 states have internal predecessors, (14538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:16:17,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3912 states to 3912 states and 14538 transitions. [2021-10-07 15:16:17,480 INFO L78 Accepts]: Start accepts. Automaton has 3912 states and 14538 transitions. Word has length 20 [2021-10-07 15:16:17,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:16:17,481 INFO L470 AbstractCegarLoop]: Abstraction has 3912 states and 14538 transitions. [2021-10-07 15:16:17,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 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) [2021-10-07 15:16:17,481 INFO L276 IsEmpty]: Start isEmpty. Operand 3912 states and 14538 transitions. [2021-10-07 15:16:17,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:16:17,483 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:16:17,483 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:16:17,516 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 [2021-10-07 15:16:17,683 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,SelfDestructingSolverStorable99 [2021-10-07 15:16:17,684 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:16:17,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:16:17,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1622024587, now seen corresponding path program 6 times [2021-10-07 15:16:17,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:16:17,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267641012] [2021-10-07 15:16:17,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:16:17,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:16:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:16:18,600 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:16:18,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:16:18,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267641012] [2021-10-07 15:16:18,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267641012] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:18,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780495171] [2021-10-07 15:16:18,601 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:16:18,601 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:16:18,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:16:18,602 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) [2021-10-07 15:16:18,603 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 [2021-10-07 15:16:20,967 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:16:20,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:16:20,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 54 conjunts are in the unsatisfiable core [2021-10-07 15:16:20,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:16:21,125 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-07 15:16:21,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 108 [2021-10-07 15:16:22,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:16:23,489 INFO L354 Elim1Store]: treesize reduction 128, result has 36.3 percent of original size [2021-10-07 15:16:23,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 68 treesize of output 124 [2021-10-07 15:16:23,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-07 15:16:23,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-10-07 15:16:23,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:16:24,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:16:24,163 INFO L354 Elim1Store]: treesize reduction 75, result has 24.2 percent of original size [2021-10-07 15:16:24,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 41 [2021-10-07 15:16:24,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:16:24,561 INFO L354 Elim1Store]: treesize reduction 78, result has 24.3 percent of original size [2021-10-07 15:16:24,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 45 [2021-10-07 15:16:24,684 INFO L354 Elim1Store]: treesize reduction 42, result has 6.7 percent of original size [2021-10-07 15:16:24,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 36 [2021-10-07 15:16:24,733 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:16:24,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780495171] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:24,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:16:24,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 26 [2021-10-07 15:16:24,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546285436] [2021-10-07 15:16:24,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 15:16:24,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:16:24,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 15:16:24,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:16:24,735 INFO L87 Difference]: Start difference. First operand 3912 states and 14538 transitions. Second operand has 28 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 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) [2021-10-07 15:16:27,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:16:27,439 INFO L93 Difference]: Finished difference Result 5232 states and 18648 transitions. [2021-10-07 15:16:27,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:16:27,439 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 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 20 [2021-10-07 15:16:27,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:16:27,452 INFO L225 Difference]: With dead ends: 5232 [2021-10-07 15:16:27,452 INFO L226 Difference]: Without dead ends: 5216 [2021-10-07 15:16:27,453 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 2476.9ms TimeCoverageRelationStatistics Valid=224, Invalid=1756, Unknown=0, NotChecked=0, Total=1980 [2021-10-07 15:16:27,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5216 states. [2021-10-07 15:16:27,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5216 to 4008. [2021-10-07 15:16:27,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4008 states, 3992 states have (on average 3.7289579158316633) internal successors, (14886), 4007 states have internal predecessors, (14886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:16:27,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 14886 transitions. [2021-10-07 15:16:27,533 INFO L78 Accepts]: Start accepts. Automaton has 4008 states and 14886 transitions. Word has length 20 [2021-10-07 15:16:27,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:16:27,533 INFO L470 AbstractCegarLoop]: Abstraction has 4008 states and 14886 transitions. [2021-10-07 15:16:27,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 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) [2021-10-07 15:16:27,533 INFO L276 IsEmpty]: Start isEmpty. Operand 4008 states and 14886 transitions. [2021-10-07 15:16:27,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:16:27,535 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:16:27,535 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:16:27,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2021-10-07 15:16:27,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,96 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:16:27,736 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:16:27,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:16:27,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1208960791, now seen corresponding path program 8 times [2021-10-07 15:16:27,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:16:27,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877070673] [2021-10-07 15:16:27,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:16:27,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:16:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:16:29,295 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:16:29,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:16:29,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877070673] [2021-10-07 15:16:29,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877070673] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:29,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332954721] [2021-10-07 15:16:29,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:16:29,296 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:16:29,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:16:29,297 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) [2021-10-07 15:16:29,298 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 [2021-10-07 15:16:31,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:16:31,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:16:31,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-07 15:16:31,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:16:31,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-07 15:16:32,067 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:16:32,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:16:32,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-07 15:16:32,166 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:16:32,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332954721] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:32,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:16:32,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 24 [2021-10-07 15:16:32,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486596314] [2021-10-07 15:16:32,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 15:16:32,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:16:32,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 15:16:32,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=591, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:16:32,169 INFO L87 Difference]: Start difference. First operand 4008 states and 14886 transitions. Second operand has 26 states, 25 states have (on average 1.56) internal successors, (39), 25 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) [2021-10-07 15:16:34,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:16:34,465 INFO L93 Difference]: Finished difference Result 5109 states and 17930 transitions. [2021-10-07 15:16:34,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:16:34,466 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.56) internal successors, (39), 25 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 20 [2021-10-07 15:16:34,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:16:34,478 INFO L225 Difference]: With dead ends: 5109 [2021-10-07 15:16:34,479 INFO L226 Difference]: Without dead ends: 5093 [2021-10-07 15:16:34,479 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 2310.7ms TimeCoverageRelationStatistics Valid=186, Invalid=1536, Unknown=0, NotChecked=0, Total=1722 [2021-10-07 15:16:34,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5093 states. [2021-10-07 15:16:34,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5093 to 4001. [2021-10-07 15:16:34,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4001 states, 3985 states have (on average 3.71969887076537) internal successors, (14823), 4000 states have internal predecessors, (14823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:16:34,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 14823 transitions. [2021-10-07 15:16:34,559 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 14823 transitions. Word has length 20 [2021-10-07 15:16:34,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:16:34,559 INFO L470 AbstractCegarLoop]: Abstraction has 4001 states and 14823 transitions. [2021-10-07 15:16:34,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.56) internal successors, (39), 25 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) [2021-10-07 15:16:34,559 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 14823 transitions. [2021-10-07 15:16:34,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:16:34,561 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:16:34,561 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:16:34,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2021-10-07 15:16:34,761 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,SelfDestructingSolverStorable101 [2021-10-07 15:16:34,762 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:16:34,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:16:34,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1207471241, now seen corresponding path program 7 times [2021-10-07 15:16:34,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:16:34,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283648329] [2021-10-07 15:16:34,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:16:34,764 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:16:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:16:35,865 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:16:35,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:16:35,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283648329] [2021-10-07 15:16:35,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283648329] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:35,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677254837] [2021-10-07 15:16:35,866 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:16:35,866 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:16:35,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:16:35,868 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) [2021-10-07 15:16:35,868 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 [2021-10-07 15:16:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:16:38,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-07 15:16:38,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:16:38,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 121 [2021-10-07 15:16:38,762 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:16:38,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-07 15:16:39,086 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-07 15:16:39,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 44 [2021-10-07 15:16:39,142 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-07 15:16:39,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 10 [2021-10-07 15:16:39,180 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:16:39,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677254837] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:39,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:16:39,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 25 [2021-10-07 15:16:39,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182569239] [2021-10-07 15:16:39,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-07 15:16:39,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:16:39,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-07 15:16:39,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:16:39,183 INFO L87 Difference]: Start difference. First operand 4001 states and 14823 transitions. Second operand has 27 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 26 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) [2021-10-07 15:16:40,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:16:40,848 INFO L93 Difference]: Finished difference Result 5140 states and 18210 transitions. [2021-10-07 15:16:40,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:16:40,848 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 26 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 20 [2021-10-07 15:16:40,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:16:40,859 INFO L225 Difference]: With dead ends: 5140 [2021-10-07 15:16:40,860 INFO L226 Difference]: Without dead ends: 5118 [2021-10-07 15:16:40,860 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1825.7ms TimeCoverageRelationStatistics Valid=215, Invalid=1677, Unknown=0, NotChecked=0, Total=1892 [2021-10-07 15:16:40,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2021-10-07 15:16:40,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 3903. [2021-10-07 15:16:40,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3903 states, 3887 states have (on average 3.7049138152817083) internal successors, (14401), 3902 states have internal predecessors, (14401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:16:40,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3903 states to 3903 states and 14401 transitions. [2021-10-07 15:16:40,936 INFO L78 Accepts]: Start accepts. Automaton has 3903 states and 14401 transitions. Word has length 20 [2021-10-07 15:16:40,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:16:40,936 INFO L470 AbstractCegarLoop]: Abstraction has 3903 states and 14401 transitions. [2021-10-07 15:16:40,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 26 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) [2021-10-07 15:16:40,936 INFO L276 IsEmpty]: Start isEmpty. Operand 3903 states and 14401 transitions. [2021-10-07 15:16:40,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:16:40,938 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:16:40,938 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:16:40,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2021-10-07 15:16:41,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102,98 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:16:41,139 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:16:41,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:16:41,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1207089724, now seen corresponding path program 9 times [2021-10-07 15:16:41,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:16:41,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541549678] [2021-10-07 15:16:41,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:16:41,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:16:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:16:41,801 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:16:41,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:16:41,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541549678] [2021-10-07 15:16:41,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541549678] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:41,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34288822] [2021-10-07 15:16:41,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:16:41,802 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:16:41,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:16:41,804 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) [2021-10-07 15:16:41,822 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 [2021-10-07 15:16:44,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:16:44,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:16:44,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-07 15:16:44,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:16:44,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-07 15:16:44,635 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:16:44,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:16:45,039 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-07 15:16:45,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34288822] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:45,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:16:45,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 22 [2021-10-07 15:16:45,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891991288] [2021-10-07 15:16:45,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:16:45,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:16:45,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:16:45,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:16:45,041 INFO L87 Difference]: Start difference. First operand 3903 states and 14401 transitions. Second operand has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 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) [2021-10-07 15:17:16,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:17:16,317 INFO L93 Difference]: Finished difference Result 7206 states and 24552 transitions. [2021-10-07 15:17:16,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 15:17:16,318 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 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 20 [2021-10-07 15:17:16,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:17:16,335 INFO L225 Difference]: With dead ends: 7206 [2021-10-07 15:17:16,335 INFO L226 Difference]: Without dead ends: 7182 [2021-10-07 15:17:16,335 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 10473.3ms TimeCoverageRelationStatistics Valid=317, Invalid=2435, Unknown=4, NotChecked=0, Total=2756 [2021-10-07 15:17:16,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7182 states. [2021-10-07 15:17:16,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7182 to 3993. [2021-10-07 15:17:16,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3993 states, 3977 states have (on average 3.7168720140809657) internal successors, (14782), 3992 states have internal predecessors, (14782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:17:16,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3993 states to 3993 states and 14782 transitions. [2021-10-07 15:17:16,426 INFO L78 Accepts]: Start accepts. Automaton has 3993 states and 14782 transitions. Word has length 20 [2021-10-07 15:17:16,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:17:16,426 INFO L470 AbstractCegarLoop]: Abstraction has 3993 states and 14782 transitions. [2021-10-07 15:17:16,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 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) [2021-10-07 15:17:16,426 INFO L276 IsEmpty]: Start isEmpty. Operand 3993 states and 14782 transitions. [2021-10-07 15:17:16,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:17:16,428 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:17:16,428 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:17:16,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2021-10-07 15:17:16,629 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,SelfDestructingSolverStorable103 [2021-10-07 15:17:16,629 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:17:16,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:17:16,630 INFO L82 PathProgramCache]: Analyzing trace with hash 374875886, now seen corresponding path program 6 times [2021-10-07 15:17:16,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:17:16,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712025295] [2021-10-07 15:17:16,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:17:16,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:17:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:17:19,213 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:17:19,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:17:19,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712025295] [2021-10-07 15:17:19,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712025295] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:19,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128605227] [2021-10-07 15:17:19,214 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:17:19,214 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:17:19,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:17:19,216 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) [2021-10-07 15:17:19,240 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 [2021-10-07 15:17:21,660 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:17:21,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:17:21,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-07 15:17:21,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:17:22,115 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:17:22,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-07 15:17:22,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2021-10-07 15:17:22,228 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-07 15:17:22,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128605227] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:22,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:17:22,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9] total 25 [2021-10-07 15:17:22,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907092157] [2021-10-07 15:17:22,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-07 15:17:22,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:17:22,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-07 15:17:22,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:17:22,231 INFO L87 Difference]: Start difference. First operand 3993 states and 14782 transitions. Second operand has 27 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 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) [2021-10-07 15:17:27,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:17:27,350 INFO L93 Difference]: Finished difference Result 7325 states and 24799 transitions. [2021-10-07 15:17:27,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-07 15:17:27,350 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 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 21 [2021-10-07 15:17:27,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:17:27,368 INFO L225 Difference]: With dead ends: 7325 [2021-10-07 15:17:27,368 INFO L226 Difference]: Without dead ends: 7309 [2021-10-07 15:17:27,368 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 4371.2ms TimeCoverageRelationStatistics Valid=295, Invalid=2785, Unknown=0, NotChecked=0, Total=3080 [2021-10-07 15:17:27,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7309 states. [2021-10-07 15:17:27,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7309 to 3908. [2021-10-07 15:17:27,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3908 states, 3892 states have (on average 3.7171120246659815) internal successors, (14467), 3907 states have internal predecessors, (14467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:17:27,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3908 states to 3908 states and 14467 transitions. [2021-10-07 15:17:27,461 INFO L78 Accepts]: Start accepts. Automaton has 3908 states and 14467 transitions. Word has length 21 [2021-10-07 15:17:27,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:17:27,461 INFO L470 AbstractCegarLoop]: Abstraction has 3908 states and 14467 transitions. [2021-10-07 15:17:27,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 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) [2021-10-07 15:17:27,461 INFO L276 IsEmpty]: Start isEmpty. Operand 3908 states and 14467 transitions. [2021-10-07 15:17:27,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:17:27,463 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:17:27,463 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:17:27,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2021-10-07 15:17:27,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,100 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:17:27,664 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:17:27,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:17:27,665 INFO L82 PathProgramCache]: Analyzing trace with hash -637242329, now seen corresponding path program 9 times [2021-10-07 15:17:27,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:17:27,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619428171] [2021-10-07 15:17:27,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:17:27,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:17:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:17:28,290 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:17:28,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:17:28,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619428171] [2021-10-07 15:17:28,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619428171] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:28,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655225494] [2021-10-07 15:17:28,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:17:28,291 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:17:28,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:17:28,292 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) [2021-10-07 15:17:28,309 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 [2021-10-07 15:17:30,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:17:30,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:17:30,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-07 15:17:30,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:17:30,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-07 15:17:31,293 INFO L354 Elim1Store]: treesize reduction 161, result has 17.9 percent of original size [2021-10-07 15:17:31,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 58 [2021-10-07 15:17:31,377 INFO L354 Elim1Store]: treesize reduction 32, result has 37.3 percent of original size [2021-10-07 15:17:31,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 31 [2021-10-07 15:17:31,413 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-07 15:17:31,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655225494] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:31,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:17:31,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 22 [2021-10-07 15:17:31,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777281594] [2021-10-07 15:17:31,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:17:31,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:17:31,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:17:31,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:17:31,415 INFO L87 Difference]: Start difference. First operand 3908 states and 14467 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 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) [2021-10-07 15:17:34,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:17:34,276 INFO L93 Difference]: Finished difference Result 5839 states and 20138 transitions. [2021-10-07 15:17:34,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-07 15:17:34,277 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 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 21 [2021-10-07 15:17:34,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:17:34,291 INFO L225 Difference]: With dead ends: 5839 [2021-10-07 15:17:34,291 INFO L226 Difference]: Without dead ends: 5819 [2021-10-07 15:17:34,291 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 2388.1ms TimeCoverageRelationStatistics Valid=310, Invalid=2140, Unknown=0, NotChecked=0, Total=2450 [2021-10-07 15:17:34,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5819 states. [2021-10-07 15:17:34,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5819 to 3928. [2021-10-07 15:17:34,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3928 states, 3912 states have (on average 3.7134458077709613) internal successors, (14527), 3927 states have internal predecessors, (14527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:17:34,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3928 states to 3928 states and 14527 transitions. [2021-10-07 15:17:34,467 INFO L78 Accepts]: Start accepts. Automaton has 3928 states and 14527 transitions. Word has length 21 [2021-10-07 15:17:34,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:17:34,467 INFO L470 AbstractCegarLoop]: Abstraction has 3928 states and 14527 transitions. [2021-10-07 15:17:34,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 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) [2021-10-07 15:17:34,468 INFO L276 IsEmpty]: Start isEmpty. Operand 3928 states and 14527 transitions. [2021-10-07 15:17:34,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:17:34,470 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:17:34,470 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:17:34,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2021-10-07 15:17:34,670 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,SelfDestructingSolverStorable105 [2021-10-07 15:17:34,671 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:17:34,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:17:34,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1234963859, now seen corresponding path program 10 times [2021-10-07 15:17:34,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:17:34,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950038716] [2021-10-07 15:17:34,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:17:34,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:17:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:17:35,433 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:17:35,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:17:35,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950038716] [2021-10-07 15:17:35,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950038716] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:35,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162419029] [2021-10-07 15:17:35,434 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:17:35,435 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:17:35,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:17:35,436 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) [2021-10-07 15:17:35,436 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 [2021-10-07 15:17:37,870 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:17:37,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:17:37,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-07 15:17:37,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:17:37,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-07 15:17:38,472 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:17:38,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:17:39,066 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-07 15:17:39,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 50 [2021-10-07 15:17:39,166 INFO L354 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2021-10-07 15:17:39,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 22 [2021-10-07 15:17:39,212 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:17:39,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162419029] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:39,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:17:39,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 28 [2021-10-07 15:17:39,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607264067] [2021-10-07 15:17:39,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:17:39,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:17:39,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:17:39,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:17:39,214 INFO L87 Difference]: Start difference. First operand 3928 states and 14527 transitions. Second operand has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 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) [2021-10-07 15:17:42,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:17:42,594 INFO L93 Difference]: Finished difference Result 6663 states and 23165 transitions. [2021-10-07 15:17:42,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:17:42,594 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 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 21 [2021-10-07 15:17:42,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:17:42,611 INFO L225 Difference]: With dead ends: 6663 [2021-10-07 15:17:42,611 INFO L226 Difference]: Without dead ends: 6619 [2021-10-07 15:17:42,611 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 3007.5ms TimeCoverageRelationStatistics Valid=316, Invalid=2234, Unknown=0, NotChecked=0, Total=2550 [2021-10-07 15:17:42,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6619 states. [2021-10-07 15:17:42,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6619 to 4045. [2021-10-07 15:17:42,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4045 states, 4029 states have (on average 3.7086125589476295) internal successors, (14942), 4044 states have internal predecessors, (14942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:17:42,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4045 states to 4045 states and 14942 transitions. [2021-10-07 15:17:42,701 INFO L78 Accepts]: Start accepts. Automaton has 4045 states and 14942 transitions. Word has length 21 [2021-10-07 15:17:42,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:17:42,701 INFO L470 AbstractCegarLoop]: Abstraction has 4045 states and 14942 transitions. [2021-10-07 15:17:42,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 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) [2021-10-07 15:17:42,701 INFO L276 IsEmpty]: Start isEmpty. Operand 4045 states and 14942 transitions. [2021-10-07 15:17:42,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:17:42,703 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:17:42,703 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:17:42,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2021-10-07 15:17:42,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,102 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:17:42,904 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:17:42,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:17:42,905 INFO L82 PathProgramCache]: Analyzing trace with hash 731347911, now seen corresponding path program 10 times [2021-10-07 15:17:42,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:17:42,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007976608] [2021-10-07 15:17:42,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:17:42,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:17:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:17:43,744 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:17:43,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:17:43,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007976608] [2021-10-07 15:17:43,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007976608] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:43,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340681309] [2021-10-07 15:17:43,745 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:17:43,745 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:17:43,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:17:43,747 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) [2021-10-07 15:17:43,748 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 [2021-10-07 15:17:46,261 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:17:46,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:17:46,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-07 15:17:46,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:17:46,783 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-07 15:17:46,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 13 [2021-10-07 15:17:46,818 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:17:46,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340681309] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:46,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:17:46,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 23 [2021-10-07 15:17:46,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743194861] [2021-10-07 15:17:46,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:17:46,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:17:46,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:17:46,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:17:46,820 INFO L87 Difference]: Start difference. First operand 4045 states and 14942 transitions. Second operand has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 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) [2021-10-07 15:17:48,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:17:48,766 INFO L93 Difference]: Finished difference Result 6109 states and 21650 transitions. [2021-10-07 15:17:48,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-07 15:17:48,767 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 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 21 [2021-10-07 15:17:48,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:17:48,782 INFO L225 Difference]: With dead ends: 6109 [2021-10-07 15:17:48,782 INFO L226 Difference]: Without dead ends: 6085 [2021-10-07 15:17:48,782 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 1874.8ms TimeCoverageRelationStatistics Valid=296, Invalid=2154, Unknown=0, NotChecked=0, Total=2450 [2021-10-07 15:17:48,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6085 states. [2021-10-07 15:17:48,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6085 to 4118. [2021-10-07 15:17:48,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4118 states, 4102 states have (on average 3.7020965382740125) internal successors, (15186), 4117 states have internal predecessors, (15186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:17:48,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4118 states to 4118 states and 15186 transitions. [2021-10-07 15:17:48,872 INFO L78 Accepts]: Start accepts. Automaton has 4118 states and 15186 transitions. Word has length 21 [2021-10-07 15:17:48,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:17:48,872 INFO L470 AbstractCegarLoop]: Abstraction has 4118 states and 15186 transitions. [2021-10-07 15:17:48,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 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) [2021-10-07 15:17:48,872 INFO L276 IsEmpty]: Start isEmpty. Operand 4118 states and 15186 transitions. [2021-10-07 15:17:48,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:17:48,874 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:17:48,875 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:17:48,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2021-10-07 15:17:49,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-10-07 15:17:49,076 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:17:49,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:17:49,076 INFO L82 PathProgramCache]: Analyzing trace with hash 375317246, now seen corresponding path program 8 times [2021-10-07 15:17:49,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:17:49,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646337174] [2021-10-07 15:17:49,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:17:49,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:17:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:17:51,043 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:17:51,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:17:51,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646337174] [2021-10-07 15:17:51,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646337174] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:51,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964853274] [2021-10-07 15:17:51,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:17:51,043 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:17:51,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:17:51,044 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) [2021-10-07 15:17:51,045 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 [2021-10-07 15:17:53,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:17:53,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:17:53,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-07 15:17:53,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:17:53,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-07 15:17:54,178 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-07 15:17:54,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 41 [2021-10-07 15:17:54,444 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-07 15:17:54,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 44 [2021-10-07 15:17:54,514 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-07 15:17:54,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 10 [2021-10-07 15:17:54,563 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:17:54,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964853274] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:54,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:17:54,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 28 [2021-10-07 15:17:54,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071413751] [2021-10-07 15:17:54,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:17:54,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:17:54,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:17:54,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=785, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:17:54,566 INFO L87 Difference]: Start difference. First operand 4118 states and 15186 transitions. Second operand has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 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) [2021-10-07 15:17:57,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:17:57,257 INFO L93 Difference]: Finished difference Result 5229 states and 18342 transitions. [2021-10-07 15:17:57,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 15:17:57,257 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 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 21 [2021-10-07 15:17:57,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:17:57,269 INFO L225 Difference]: With dead ends: 5229 [2021-10-07 15:17:57,269 INFO L226 Difference]: Without dead ends: 5205 [2021-10-07 15:17:57,270 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 2976.5ms TimeCoverageRelationStatistics Valid=232, Invalid=2218, Unknown=0, NotChecked=0, Total=2450 [2021-10-07 15:17:57,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5205 states. [2021-10-07 15:17:57,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5205 to 3876. [2021-10-07 15:17:57,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3876 states, 3860 states have (on average 3.7044041450777203) internal successors, (14299), 3875 states have internal predecessors, (14299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:17:57,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3876 states to 3876 states and 14299 transitions. [2021-10-07 15:17:57,348 INFO L78 Accepts]: Start accepts. Automaton has 3876 states and 14299 transitions. Word has length 21 [2021-10-07 15:17:57,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:17:57,348 INFO L470 AbstractCegarLoop]: Abstraction has 3876 states and 14299 transitions. [2021-10-07 15:17:57,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 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) [2021-10-07 15:17:57,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3876 states and 14299 transitions. [2021-10-07 15:17:57,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:17:57,350 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:17:57,350 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:17:57,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2021-10-07 15:17:57,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,104 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:17:57,551 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:17:57,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:17:57,552 INFO L82 PathProgramCache]: Analyzing trace with hash 791741659, now seen corresponding path program 11 times [2021-10-07 15:17:57,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:17:57,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000567497] [2021-10-07 15:17:57,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:17:57,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:17:57,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:17:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:17:58,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:17:58,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000567497] [2021-10-07 15:17:58,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000567497] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:58,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665953561] [2021-10-07 15:17:58,618 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:17:58,618 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:17:58,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:17:58,619 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) [2021-10-07 15:17:58,620 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 [2021-10-07 15:18:01,299 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:18:01,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:18:01,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-07 15:18:01,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:18:01,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 83 [2021-10-07 15:18:01,582 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:18:01,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-07 15:18:01,861 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-07 15:18:01,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 16 [2021-10-07 15:18:01,900 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-07 15:18:01,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665953561] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:01,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:18:01,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 22 [2021-10-07 15:18:01,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738424946] [2021-10-07 15:18:01,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:18:01,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:18:01,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:18:01,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:18:01,902 INFO L87 Difference]: Start difference. First operand 3876 states and 14299 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 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) [2021-10-07 15:18:03,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:18:03,678 INFO L93 Difference]: Finished difference Result 5867 states and 20712 transitions. [2021-10-07 15:18:03,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 15:18:03,679 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 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 21 [2021-10-07 15:18:03,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:18:03,693 INFO L225 Difference]: With dead ends: 5867 [2021-10-07 15:18:03,693 INFO L226 Difference]: Without dead ends: 5855 [2021-10-07 15:18:03,693 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 1763.7ms TimeCoverageRelationStatistics Valid=253, Invalid=1817, Unknown=0, NotChecked=0, Total=2070 [2021-10-07 15:18:03,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5855 states. [2021-10-07 15:18:03,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5855 to 3874. [2021-10-07 15:18:03,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3874 states, 3858 states have (on average 3.7039917055469154) internal successors, (14290), 3873 states have internal predecessors, (14290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:18:03,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3874 states to 3874 states and 14290 transitions. [2021-10-07 15:18:03,773 INFO L78 Accepts]: Start accepts. Automaton has 3874 states and 14290 transitions. Word has length 21 [2021-10-07 15:18:03,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:18:03,773 INFO L470 AbstractCegarLoop]: Abstraction has 3874 states and 14290 transitions. [2021-10-07 15:18:03,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 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) [2021-10-07 15:18:03,774 INFO L276 IsEmpty]: Start isEmpty. Operand 3874 states and 14290 transitions. [2021-10-07 15:18:03,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 15:18:03,776 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:18:03,776 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:18:03,809 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 [2021-10-07 15:18:03,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,105 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:18:03,977 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:18:03,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:18:03,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1196988400, now seen corresponding path program 9 times [2021-10-07 15:18:03,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:18:03,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675763704] [2021-10-07 15:18:03,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:18:03,979 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:18:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:18:05,677 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:18:05,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:18:05,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675763704] [2021-10-07 15:18:05,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675763704] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:05,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336787533] [2021-10-07 15:18:05,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:18:05,678 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:18:05,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:18:05,680 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) [2021-10-07 15:18:05,680 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 [2021-10-07 15:18:08,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:18:08,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:18:08,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-07 15:18:08,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:18:08,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 142 [2021-10-07 15:18:10,872 INFO L354 Elim1Store]: treesize reduction 161, result has 17.9 percent of original size [2021-10-07 15:18:10,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 58 [2021-10-07 15:18:11,976 INFO L354 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2021-10-07 15:18:11,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 13 [2021-10-07 15:18:12,024 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-07 15:18:12,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336787533] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:12,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:18:12,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10] total 27 [2021-10-07 15:18:12,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025489356] [2021-10-07 15:18:12,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-07 15:18:12,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:18:12,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-07 15:18:12,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=732, Unknown=3, NotChecked=0, Total=812 [2021-10-07 15:18:12,027 INFO L87 Difference]: Start difference. First operand 3874 states and 14290 transitions. Second operand has 29 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 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) [2021-10-07 15:18:22,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:18:22,790 INFO L93 Difference]: Finished difference Result 5251 states and 18711 transitions. [2021-10-07 15:18:22,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:18:22,791 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 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 22 [2021-10-07 15:18:22,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:18:22,802 INFO L225 Difference]: With dead ends: 5251 [2021-10-07 15:18:22,803 INFO L226 Difference]: Without dead ends: 5233 [2021-10-07 15:18:22,803 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 13172.1ms TimeCoverageRelationStatistics Valid=269, Invalid=2271, Unknown=10, NotChecked=0, Total=2550 [2021-10-07 15:18:22,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5233 states. [2021-10-07 15:18:22,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5233 to 3797. [2021-10-07 15:18:22,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3797 states, 3781 states have (on average 3.7037820682359164) internal successors, (14004), 3796 states have internal predecessors, (14004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:18:22,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3797 states to 3797 states and 14004 transitions. [2021-10-07 15:18:22,878 INFO L78 Accepts]: Start accepts. Automaton has 3797 states and 14004 transitions. Word has length 22 [2021-10-07 15:18:22,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:18:22,878 INFO L470 AbstractCegarLoop]: Abstraction has 3797 states and 14004 transitions. [2021-10-07 15:18:22,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 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) [2021-10-07 15:18:22,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3797 states and 14004 transitions. [2021-10-07 15:18:22,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 15:18:22,880 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:18:22,880 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:18:22,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2021-10-07 15:18:23,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,106 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:18:23,081 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:18:23,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:18:23,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1271948758, now seen corresponding path program 11 times [2021-10-07 15:18:23,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:18:23,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346929524] [2021-10-07 15:18:23,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:18:23,083 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:18:23,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:18:25,438 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:18:25,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:18:25,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346929524] [2021-10-07 15:18:25,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346929524] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:25,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590931813] [2021-10-07 15:18:25,439 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:18:25,439 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:18:25,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:18:25,440 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) [2021-10-07 15:18:25,440 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 [2021-10-07 15:18:28,277 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:18:28,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:18:28,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-07 15:18:28,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:18:28,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 771 treesize of output 739 [2021-10-07 15:18:28,782 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:18:28,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-07 15:18:29,286 INFO L354 Elim1Store]: treesize reduction 175, result has 13.4 percent of original size [2021-10-07 15:18:29,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 55 [2021-10-07 15:18:29,395 INFO L354 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2021-10-07 15:18:29,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 27 [2021-10-07 15:18:29,449 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-07 15:18:29,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590931813] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:29,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:18:29,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10] total 27 [2021-10-07 15:18:29,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49258892] [2021-10-07 15:18:29,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-07 15:18:29,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:18:29,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-07 15:18:29,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=734, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:18:29,451 INFO L87 Difference]: Start difference. First operand 3797 states and 14004 transitions. Second operand has 29 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 28 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) [2021-10-07 15:18:33,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:18:33,356 INFO L93 Difference]: Finished difference Result 4730 states and 16657 transitions. [2021-10-07 15:18:33,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:18:33,356 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 28 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 22 [2021-10-07 15:18:33,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:18:33,367 INFO L225 Difference]: With dead ends: 4730 [2021-10-07 15:18:33,367 INFO L226 Difference]: Without dead ends: 4706 [2021-10-07 15:18:33,368 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 3913.0ms TimeCoverageRelationStatistics Valid=262, Invalid=2188, Unknown=0, NotChecked=0, Total=2450 [2021-10-07 15:18:33,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4706 states. [2021-10-07 15:18:33,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4706 to 3539. [2021-10-07 15:18:33,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3539 states, 3523 states have (on average 3.7107578768095375) internal successors, (13073), 3538 states have internal predecessors, (13073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:18:33,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3539 states to 3539 states and 13073 transitions. [2021-10-07 15:18:33,439 INFO L78 Accepts]: Start accepts. Automaton has 3539 states and 13073 transitions. Word has length 22 [2021-10-07 15:18:33,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:18:33,440 INFO L470 AbstractCegarLoop]: Abstraction has 3539 states and 13073 transitions. [2021-10-07 15:18:33,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 28 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) [2021-10-07 15:18:33,440 INFO L276 IsEmpty]: Start isEmpty. Operand 3539 states and 13073 transitions. [2021-10-07 15:18:33,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:18:33,442 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:18:33,442 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:18:33,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2021-10-07 15:18:33,656 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,SelfDestructingSolverStorable111 [2021-10-07 15:18:33,657 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:18:33,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:18:33,657 INFO L82 PathProgramCache]: Analyzing trace with hash -79724785, now seen corresponding path program 1 times [2021-10-07 15:18:33,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:18:33,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014858187] [2021-10-07 15:18:33,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:18:33,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:18:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:18:33,974 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:18:33,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:18:33,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014858187] [2021-10-07 15:18:33,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014858187] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:33,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329861963] [2021-10-07 15:18:33,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:18:33,975 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:18:33,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:18:33,976 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) [2021-10-07 15:18:33,977 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 [2021-10-07 15:18:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:18:36,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 15:18:36,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:18:36,840 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-07 15:18:36,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329861963] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:36,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:18:36,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 12 [2021-10-07 15:18:36,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914700393] [2021-10-07 15:18:36,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:18:36,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:18:36,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:18:36,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:18:36,842 INFO L87 Difference]: Start difference. First operand 3539 states and 13073 transitions. Second operand has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 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) [2021-10-07 15:18:37,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:18:37,542 INFO L93 Difference]: Finished difference Result 5098 states and 17411 transitions. [2021-10-07 15:18:37,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:18:37,542 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 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 23 [2021-10-07 15:18:37,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:18:37,554 INFO L225 Difference]: With dead ends: 5098 [2021-10-07 15:18:37,554 INFO L226 Difference]: Without dead ends: 5098 [2021-10-07 15:18:37,555 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 386.1ms TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:18:37,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5098 states. [2021-10-07 15:18:37,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5098 to 3568. [2021-10-07 15:18:37,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3568 states, 3552 states have (on average 3.703828828828829) internal successors, (13156), 3567 states have internal predecessors, (13156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:18:37,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3568 states to 3568 states and 13156 transitions. [2021-10-07 15:18:37,631 INFO L78 Accepts]: Start accepts. Automaton has 3568 states and 13156 transitions. Word has length 23 [2021-10-07 15:18:37,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:18:37,632 INFO L470 AbstractCegarLoop]: Abstraction has 3568 states and 13156 transitions. [2021-10-07 15:18:37,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 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) [2021-10-07 15:18:37,632 INFO L276 IsEmpty]: Start isEmpty. Operand 3568 states and 13156 transitions. [2021-10-07 15:18:37,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:18:37,634 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:18:37,634 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:18:37,669 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 [2021-10-07 15:18:37,834 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,SelfDestructingSolverStorable112 [2021-10-07 15:18:37,835 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:18:37,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:18:37,835 INFO L82 PathProgramCache]: Analyzing trace with hash -79724703, now seen corresponding path program 1 times [2021-10-07 15:18:37,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:18:37,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350320398] [2021-10-07 15:18:37,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:18:37,836 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:18:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:18:39,390 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:18:39,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:18:39,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350320398] [2021-10-07 15:18:39,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350320398] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:39,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903370548] [2021-10-07 15:18:39,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:18:39,391 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:18:39,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:18:39,392 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) [2021-10-07 15:18:39,393 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 [2021-10-07 15:18:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:18:42,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 15:18:42,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:18:42,327 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-07 15:18:42,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903370548] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:42,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:18:42,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5] total 21 [2021-10-07 15:18:42,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450681312] [2021-10-07 15:18:42,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:18:42,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:18:42,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:18:42,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:18:42,329 INFO L87 Difference]: Start difference. First operand 3568 states and 13156 transitions. Second operand has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 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) [2021-10-07 15:18:44,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:18:44,408 INFO L93 Difference]: Finished difference Result 4952 states and 16968 transitions. [2021-10-07 15:18:44,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:18:44,409 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 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 23 [2021-10-07 15:18:44,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:18:44,420 INFO L225 Difference]: With dead ends: 4952 [2021-10-07 15:18:44,420 INFO L226 Difference]: Without dead ends: 4952 [2021-10-07 15:18:44,421 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1627.2ms TimeCoverageRelationStatistics Valid=116, Invalid=1006, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 15:18:44,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4952 states. [2021-10-07 15:18:44,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4952 to 3628. [2021-10-07 15:18:44,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3628 states, 3612 states have (on average 3.682170542635659) internal successors, (13300), 3627 states have internal predecessors, (13300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:18:44,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 13300 transitions. [2021-10-07 15:18:44,502 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 13300 transitions. Word has length 23 [2021-10-07 15:18:44,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:18:44,502 INFO L470 AbstractCegarLoop]: Abstraction has 3628 states and 13300 transitions. [2021-10-07 15:18:44,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 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) [2021-10-07 15:18:44,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 13300 transitions. [2021-10-07 15:18:44,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:18:44,504 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:18:44,504 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:18:44,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2021-10-07 15:18:44,706 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,SelfDestructingSolverStorable113 [2021-10-07 15:18:44,707 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:18:44,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:18:44,707 INFO L82 PathProgramCache]: Analyzing trace with hash -79751755, now seen corresponding path program 2 times [2021-10-07 15:18:44,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:18:44,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566353386] [2021-10-07 15:18:44,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:18:44,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:18:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:18:45,942 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:18:45,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:18:45,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566353386] [2021-10-07 15:18:45,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566353386] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:45,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640491642] [2021-10-07 15:18:45,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:18:45,943 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:18:45,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:18:45,945 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) [2021-10-07 15:18:45,965 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 [2021-10-07 15:18:48,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:18:48,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:18:48,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-07 15:18:48,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:18:48,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:18:49,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:18:49,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:18:49,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:18:49,417 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:18:49,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640491642] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:49,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:18:49,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 23 [2021-10-07 15:18:49,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454095750] [2021-10-07 15:18:49,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:18:49,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:18:49,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:18:49,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:18:49,420 INFO L87 Difference]: Start difference. First operand 3628 states and 13300 transitions. Second operand has 25 states, 24 states have (on average 1.875) internal successors, (45), 24 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) [2021-10-07 15:18:51,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:18:51,134 INFO L93 Difference]: Finished difference Result 4000 states and 14221 transitions. [2021-10-07 15:18:51,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:18:51,134 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.875) internal successors, (45), 24 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 23 [2021-10-07 15:18:51,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:18:51,143 INFO L225 Difference]: With dead ends: 4000 [2021-10-07 15:18:51,143 INFO L226 Difference]: Without dead ends: 4000 [2021-10-07 15:18:51,144 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1843.8ms TimeCoverageRelationStatistics Valid=178, Invalid=1082, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 15:18:51,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4000 states. [2021-10-07 15:18:51,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4000 to 3780. [2021-10-07 15:18:51,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3780 states, 3764 states have (on average 3.6370882040382573) internal successors, (13690), 3779 states have internal predecessors, (13690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:18:51,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3780 states to 3780 states and 13690 transitions. [2021-10-07 15:18:51,208 INFO L78 Accepts]: Start accepts. Automaton has 3780 states and 13690 transitions. Word has length 23 [2021-10-07 15:18:51,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:18:51,208 INFO L470 AbstractCegarLoop]: Abstraction has 3780 states and 13690 transitions. [2021-10-07 15:18:51,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.875) internal successors, (45), 24 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) [2021-10-07 15:18:51,208 INFO L276 IsEmpty]: Start isEmpty. Operand 3780 states and 13690 transitions. [2021-10-07 15:18:51,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:18:51,210 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:18:51,211 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:18:51,244 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 [2021-10-07 15:18:51,411 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,SelfDestructingSolverStorable114 [2021-10-07 15:18:51,411 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:18:51,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:18:51,412 INFO L82 PathProgramCache]: Analyzing trace with hash -79751673, now seen corresponding path program 2 times [2021-10-07 15:18:51,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:18:51,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098659962] [2021-10-07 15:18:51,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:18:51,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:18:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:18:52,160 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:18:52,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:18:52,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098659962] [2021-10-07 15:18:52,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098659962] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:52,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350062493] [2021-10-07 15:18:52,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:18:52,161 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:18:52,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:18:52,162 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) [2021-10-07 15:18:52,164 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 [2021-10-07 15:18:54,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:18:54,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:18:54,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-07 15:18:54,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:18:55,099 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-07 15:18:55,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 55 [2021-10-07 15:18:56,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:18:56,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:18:56,311 INFO L354 Elim1Store]: treesize reduction 144, result has 31.1 percent of original size [2021-10-07 15:18:56,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 60 treesize of output 108 [2021-10-07 15:18:56,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:18:56,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:18:56,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:18:56,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:18:57,074 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:18:57,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350062493] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:57,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:18:57,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 24 [2021-10-07 15:18:57,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555326619] [2021-10-07 15:18:57,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 15:18:57,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:18:57,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 15:18:57,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=588, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:18:57,076 INFO L87 Difference]: Start difference. First operand 3780 states and 13690 transitions. Second operand has 26 states, 25 states have (on average 1.8) internal successors, (45), 25 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) [2021-10-07 15:19:00,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:19:00,324 INFO L93 Difference]: Finished difference Result 4075 states and 14277 transitions. [2021-10-07 15:19:00,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:19:00,325 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.8) internal successors, (45), 25 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 23 [2021-10-07 15:19:00,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:19:00,336 INFO L225 Difference]: With dead ends: 4075 [2021-10-07 15:19:00,336 INFO L226 Difference]: Without dead ends: 4051 [2021-10-07 15:19:00,336 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 2751.8ms TimeCoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2021-10-07 15:19:00,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4051 states. [2021-10-07 15:19:00,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4051 to 3766. [2021-10-07 15:19:00,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3766 states, 3750 states have (on average 3.6397333333333335) internal successors, (13649), 3765 states have internal predecessors, (13649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:19:00,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3766 states to 3766 states and 13649 transitions. [2021-10-07 15:19:00,400 INFO L78 Accepts]: Start accepts. Automaton has 3766 states and 13649 transitions. Word has length 23 [2021-10-07 15:19:00,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:19:00,400 INFO L470 AbstractCegarLoop]: Abstraction has 3766 states and 13649 transitions. [2021-10-07 15:19:00,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.8) internal successors, (45), 25 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) [2021-10-07 15:19:00,400 INFO L276 IsEmpty]: Start isEmpty. Operand 3766 states and 13649 transitions. [2021-10-07 15:19:00,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:19:00,402 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:19:00,402 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:19:00,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2021-10-07 15:19:00,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,111 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:19:00,603 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:19:00,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:19:00,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1298104482, now seen corresponding path program 2 times [2021-10-07 15:19:00,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:19:00,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48964780] [2021-10-07 15:19:00,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:19:00,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:19:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:19:03,123 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:19:03,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:19:03,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48964780] [2021-10-07 15:19:03,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48964780] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:03,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503505062] [2021-10-07 15:19:03,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:19:03,124 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:19:03,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:19:03,125 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) [2021-10-07 15:19:03,148 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 [2021-10-07 15:19:05,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:19:05,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:19:05,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-07 15:19:05,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:19:06,769 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:19:06,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503505062] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:06,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:19:06,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 8] total 24 [2021-10-07 15:19:06,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123395910] [2021-10-07 15:19:06,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 15:19:06,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:19:06,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 15:19:06,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:19:06,772 INFO L87 Difference]: Start difference. First operand 3766 states and 13649 transitions. Second operand has 26 states, 25 states have (on average 1.8) internal successors, (45), 25 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) [2021-10-07 15:19:12,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:19:12,561 INFO L93 Difference]: Finished difference Result 4344 states and 15023 transitions. [2021-10-07 15:19:12,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 15:19:12,561 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.8) internal successors, (45), 25 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 23 [2021-10-07 15:19:12,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:19:12,571 INFO L225 Difference]: With dead ends: 4344 [2021-10-07 15:19:12,571 INFO L226 Difference]: Without dead ends: 4344 [2021-10-07 15:19:12,572 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 5177.4ms TimeCoverageRelationStatistics Valid=299, Invalid=2251, Unknown=0, NotChecked=0, Total=2550 [2021-10-07 15:19:12,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states. [2021-10-07 15:19:12,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 3927. [2021-10-07 15:19:12,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3927 states, 3911 states have (on average 3.6105855279979546) internal successors, (14121), 3926 states have internal predecessors, (14121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:19:12,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3927 states to 3927 states and 14121 transitions. [2021-10-07 15:19:12,649 INFO L78 Accepts]: Start accepts. Automaton has 3927 states and 14121 transitions. Word has length 23 [2021-10-07 15:19:12,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:19:12,649 INFO L470 AbstractCegarLoop]: Abstraction has 3927 states and 14121 transitions. [2021-10-07 15:19:12,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.8) internal successors, (45), 25 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) [2021-10-07 15:19:12,649 INFO L276 IsEmpty]: Start isEmpty. Operand 3927 states and 14121 transitions. [2021-10-07 15:19:12,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:19:12,651 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:19:12,651 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:19:12,687 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 [2021-10-07 15:19:12,852 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,SelfDestructingSolverStorable116 [2021-10-07 15:19:12,852 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:19:12,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:19:12,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1298104564, now seen corresponding path program 1 times [2021-10-07 15:19:12,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:19:12,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271192685] [2021-10-07 15:19:12,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:19:12,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:19:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:19:13,691 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:19:13,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:19:13,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271192685] [2021-10-07 15:19:13,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271192685] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:13,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810607092] [2021-10-07 15:19:13,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:19:13,692 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:19:13,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:19:13,693 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) [2021-10-07 15:19:13,694 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 [2021-10-07 15:19:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:19:16,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-07 15:19:16,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:19:16,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:19:16,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:19:16,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:19:17,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:19:17,475 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:19:17,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810607092] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:17,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:19:17,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 24 [2021-10-07 15:19:17,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512883358] [2021-10-07 15:19:17,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 15:19:17,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:19:17,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 15:19:17,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:19:17,477 INFO L87 Difference]: Start difference. First operand 3927 states and 14121 transitions. Second operand has 26 states, 25 states have (on average 1.8) internal successors, (45), 25 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) [2021-10-07 15:19:20,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:19:20,917 INFO L93 Difference]: Finished difference Result 4195 states and 14644 transitions. [2021-10-07 15:19:20,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 15:19:20,918 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.8) internal successors, (45), 25 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 23 [2021-10-07 15:19:20,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:19:20,927 INFO L225 Difference]: With dead ends: 4195 [2021-10-07 15:19:20,927 INFO L226 Difference]: Without dead ends: 4195 [2021-10-07 15:19:20,927 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 2905.9ms TimeCoverageRelationStatistics Valid=232, Invalid=2120, Unknown=0, NotChecked=0, Total=2352 [2021-10-07 15:19:20,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4195 states. [2021-10-07 15:19:20,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4195 to 3886. [2021-10-07 15:19:20,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3886 states, 3870 states have (on average 3.6147286821705427) internal successors, (13989), 3885 states have internal predecessors, (13989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:19:20,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3886 states to 3886 states and 13989 transitions. [2021-10-07 15:19:20,993 INFO L78 Accepts]: Start accepts. Automaton has 3886 states and 13989 transitions. Word has length 23 [2021-10-07 15:19:20,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:19:20,993 INFO L470 AbstractCegarLoop]: Abstraction has 3886 states and 13989 transitions. [2021-10-07 15:19:20,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.8) internal successors, (45), 25 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) [2021-10-07 15:19:20,993 INFO L276 IsEmpty]: Start isEmpty. Operand 3886 states and 13989 transitions. [2021-10-07 15:19:20,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:19:20,995 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:19:20,995 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:19:21,029 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 [2021-10-07 15:19:21,196 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,SelfDestructingSolverStorable117 [2021-10-07 15:19:21,196 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:19:21,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:19:21,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1298078442, now seen corresponding path program 3 times [2021-10-07 15:19:21,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:19:21,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293767766] [2021-10-07 15:19:21,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:19:21,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:19:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:19:22,370 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:19:22,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:19:22,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293767766] [2021-10-07 15:19:22,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293767766] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:22,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166397392] [2021-10-07 15:19:22,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:19:22,372 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:19:22,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:19:22,373 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) [2021-10-07 15:19:22,374 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 [2021-10-07 15:19:25,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:19:25,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:19:25,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-07 15:19:25,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:19:25,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:19:25,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:19:25,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:19:25,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:19:26,317 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:19:26,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166397392] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:26,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:19:26,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 24 [2021-10-07 15:19:26,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82994387] [2021-10-07 15:19:26,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 15:19:26,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:19:26,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 15:19:26,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:19:26,319 INFO L87 Difference]: Start difference. First operand 3886 states and 13989 transitions. Second operand has 26 states, 25 states have (on average 1.8) internal successors, (45), 25 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) [2021-10-07 15:19:29,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:19:29,327 INFO L93 Difference]: Finished difference Result 4207 states and 14675 transitions. [2021-10-07 15:19:29,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:19:29,328 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.8) internal successors, (45), 25 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 23 [2021-10-07 15:19:29,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:19:29,337 INFO L225 Difference]: With dead ends: 4207 [2021-10-07 15:19:29,337 INFO L226 Difference]: Without dead ends: 4207 [2021-10-07 15:19:29,337 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 2747.6ms TimeCoverageRelationStatistics Valid=202, Invalid=1778, Unknown=0, NotChecked=0, Total=1980 [2021-10-07 15:19:29,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2021-10-07 15:19:29,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 3938. [2021-10-07 15:19:29,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3938 states, 3922 states have (on average 3.597144314125446) internal successors, (14108), 3937 states have internal predecessors, (14108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:19:29,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3938 states to 3938 states and 14108 transitions. [2021-10-07 15:19:29,403 INFO L78 Accepts]: Start accepts. Automaton has 3938 states and 14108 transitions. Word has length 23 [2021-10-07 15:19:29,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:19:29,403 INFO L470 AbstractCegarLoop]: Abstraction has 3938 states and 14108 transitions. [2021-10-07 15:19:29,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.8) internal successors, (45), 25 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) [2021-10-07 15:19:29,403 INFO L276 IsEmpty]: Start isEmpty. Operand 3938 states and 14108 transitions. [2021-10-07 15:19:29,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:19:29,405 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:19:29,405 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:19:29,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2021-10-07 15:19:29,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2021-10-07 15:19:29,606 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:19:29,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:19:29,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1298078524, now seen corresponding path program 2 times [2021-10-07 15:19:29,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:19:29,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436138355] [2021-10-07 15:19:29,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:19:29,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:19:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:19:31,715 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:19:31,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:19:31,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436138355] [2021-10-07 15:19:31,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436138355] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:31,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293921702] [2021-10-07 15:19:31,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:19:31,716 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:19:31,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:19:31,717 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) [2021-10-07 15:19:31,718 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 [2021-10-07 15:19:34,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:19:34,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:19:34,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 56 conjunts are in the unsatisfiable core [2021-10-07 15:19:34,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:19:35,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-07 15:19:35,198 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:19:35,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-07 15:19:35,339 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:19:35,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-07 15:19:35,511 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:19:35,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-07 15:19:36,366 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:19:36,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293921702] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:36,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:19:36,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 29 [2021-10-07 15:19:36,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174790414] [2021-10-07 15:19:36,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-07 15:19:36,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:19:36,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-07 15:19:36,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=857, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:19:36,367 INFO L87 Difference]: Start difference. First operand 3938 states and 14108 transitions. Second operand has 31 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 30 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) [2021-10-07 15:19:43,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:19:43,491 INFO L93 Difference]: Finished difference Result 4577 states and 15754 transitions. [2021-10-07 15:19:43,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-07 15:19:43,491 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 30 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 23 [2021-10-07 15:19:43,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:19:43,502 INFO L225 Difference]: With dead ends: 4577 [2021-10-07 15:19:43,502 INFO L226 Difference]: Without dead ends: 4537 [2021-10-07 15:19:43,502 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 6060.0ms TimeCoverageRelationStatistics Valid=277, Invalid=2693, Unknown=0, NotChecked=0, Total=2970 [2021-10-07 15:19:43,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4537 states. [2021-10-07 15:19:43,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4537 to 4128. [2021-10-07 15:19:43,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4128 states, 4112 states have (on average 3.5792801556420235) internal successors, (14718), 4127 states have internal predecessors, (14718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:19:43,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4128 states to 4128 states and 14718 transitions. [2021-10-07 15:19:43,575 INFO L78 Accepts]: Start accepts. Automaton has 4128 states and 14718 transitions. Word has length 23 [2021-10-07 15:19:43,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:19:43,575 INFO L470 AbstractCegarLoop]: Abstraction has 4128 states and 14718 transitions. [2021-10-07 15:19:43,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 30 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) [2021-10-07 15:19:43,576 INFO L276 IsEmpty]: Start isEmpty. Operand 4128 states and 14718 transitions. [2021-10-07 15:19:43,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:19:43,578 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:19:43,579 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:19:43,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2021-10-07 15:19:43,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,115 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:19:43,782 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:19:43,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:19:43,782 INFO L82 PathProgramCache]: Analyzing trace with hash 658414309, now seen corresponding path program 3 times [2021-10-07 15:19:43,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:19:43,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26835543] [2021-10-07 15:19:43,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:19:43,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:19:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:19:44,961 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:19:44,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:19:44,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26835543] [2021-10-07 15:19:44,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26835543] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:44,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232411268] [2021-10-07 15:19:44,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:19:44,962 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:19:44,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:19:44,963 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) [2021-10-07 15:19:44,964 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 [2021-10-07 15:19:47,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:19:47,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:19:47,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-07 15:19:47,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:19:48,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-07 15:19:48,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:19:48,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-07 15:19:48,344 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 15:19:48,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-10-07 15:19:48,458 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 15:19:48,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-10-07 15:19:48,921 INFO L354 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2021-10-07 15:19:48,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 48 [2021-10-07 15:19:49,188 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:19:49,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232411268] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:49,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:19:49,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 25 [2021-10-07 15:19:49,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054840627] [2021-10-07 15:19:49,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-07 15:19:49,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:19:49,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-07 15:19:49,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:19:49,190 INFO L87 Difference]: Start difference. First operand 4128 states and 14718 transitions. Second operand has 27 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 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) [2021-10-07 15:19:52,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:19:52,292 INFO L93 Difference]: Finished difference Result 4340 states and 15151 transitions. [2021-10-07 15:19:52,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:19:52,292 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 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 23 [2021-10-07 15:19:52,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:19:52,303 INFO L225 Difference]: With dead ends: 4340 [2021-10-07 15:19:52,303 INFO L226 Difference]: Without dead ends: 4276 [2021-10-07 15:19:52,303 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 2924.2ms TimeCoverageRelationStatistics Valid=198, Invalid=1872, Unknown=0, NotChecked=0, Total=2070 [2021-10-07 15:19:52,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4276 states. [2021-10-07 15:19:52,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4276 to 4177. [2021-10-07 15:19:52,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4177 states, 4161 states have (on average 3.5580389329488105) internal successors, (14805), 4176 states have internal predecessors, (14805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:19:52,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4177 states to 4177 states and 14805 transitions. [2021-10-07 15:19:52,380 INFO L78 Accepts]: Start accepts. Automaton has 4177 states and 14805 transitions. Word has length 23 [2021-10-07 15:19:52,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:19:52,380 INFO L470 AbstractCegarLoop]: Abstraction has 4177 states and 14805 transitions. [2021-10-07 15:19:52,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 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) [2021-10-07 15:19:52,380 INFO L276 IsEmpty]: Start isEmpty. Operand 4177 states and 14805 transitions. [2021-10-07 15:19:52,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:19:52,383 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:19:52,383 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:19:52,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2021-10-07 15:19:52,584 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,SelfDestructingSolverStorable120 [2021-10-07 15:19:52,585 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:19:52,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:19:52,585 INFO L82 PathProgramCache]: Analyzing trace with hash 658414391, now seen corresponding path program 3 times [2021-10-07 15:19:52,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:19:52,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825426808] [2021-10-07 15:19:52,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:19:52,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:19:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:19:53,024 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:19:53,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:19:53,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825426808] [2021-10-07 15:19:53,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825426808] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:53,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988703561] [2021-10-07 15:19:53,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:19:53,025 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:19:53,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:19:53,026 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) [2021-10-07 15:19:53,028 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 [2021-10-07 15:19:56,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:19:56,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:19:56,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-07 15:19:56,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:19:56,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-07 15:19:56,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:19:56,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:19:56,736 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:19:56,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 38 [2021-10-07 15:19:56,934 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:19:56,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988703561] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:56,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:19:56,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 19 [2021-10-07 15:19:56,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910873810] [2021-10-07 15:19:56,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 15:19:56,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:19:56,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 15:19:56,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:19:56,936 INFO L87 Difference]: Start difference. First operand 4177 states and 14805 transitions. Second operand has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 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) [2021-10-07 15:19:58,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:19:58,046 INFO L93 Difference]: Finished difference Result 4249 states and 14941 transitions. [2021-10-07 15:19:58,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:19:58,047 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 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 23 [2021-10-07 15:19:58,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:19:58,056 INFO L225 Difference]: With dead ends: 4249 [2021-10-07 15:19:58,056 INFO L226 Difference]: Without dead ends: 4228 [2021-10-07 15:19:58,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1085.4ms TimeCoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:19:58,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4228 states. [2021-10-07 15:19:58,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4228 to 4162. [2021-10-07 15:19:58,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4162 states, 4146 states have (on average 3.5646406174626146) internal successors, (14779), 4161 states have internal predecessors, (14779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:19:58,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4162 states to 4162 states and 14779 transitions. [2021-10-07 15:19:58,127 INFO L78 Accepts]: Start accepts. Automaton has 4162 states and 14779 transitions. Word has length 23 [2021-10-07 15:19:58,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:19:58,127 INFO L470 AbstractCegarLoop]: Abstraction has 4162 states and 14779 transitions. [2021-10-07 15:19:58,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 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) [2021-10-07 15:19:58,127 INFO L276 IsEmpty]: Start isEmpty. Operand 4162 states and 14779 transitions. [2021-10-07 15:19:58,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:19:58,130 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:19:58,130 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:19:58,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2021-10-07 15:19:58,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,117 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:19:58,331 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:19:58,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:19:58,331 INFO L82 PathProgramCache]: Analyzing trace with hash 567659634, now seen corresponding path program 4 times [2021-10-07 15:19:58,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:19:58,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370189583] [2021-10-07 15:19:58,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:19:58,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:19:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:19:59,599 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:19:59,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:19:59,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370189583] [2021-10-07 15:19:59,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370189583] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:59,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079836003] [2021-10-07 15:19:59,600 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:19:59,600 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:19:59,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:19:59,601 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) [2021-10-07 15:19:59,602 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 [2021-10-07 15:20:02,608 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:20:02,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:20:02,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-07 15:20:02,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:20:02,748 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-07 15:20:02,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 55 [2021-10-07 15:20:04,098 INFO L354 Elim1Store]: treesize reduction 152, result has 32.4 percent of original size [2021-10-07 15:20:04,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 60 treesize of output 116 [2021-10-07 15:20:04,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:20:04,865 INFO L354 Elim1Store]: treesize reduction 75, result has 24.2 percent of original size [2021-10-07 15:20:04,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-10-07 15:20:05,044 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:20:05,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079836003] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:20:05,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:20:05,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 24 [2021-10-07 15:20:05,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239589555] [2021-10-07 15:20:05,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 15:20:05,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:20:05,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 15:20:05,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:20:05,047 INFO L87 Difference]: Start difference. First operand 4162 states and 14779 transitions. Second operand has 26 states, 25 states have (on average 1.8) internal successors, (45), 25 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) [2021-10-07 15:20:07,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:20:07,857 INFO L93 Difference]: Finished difference Result 4413 states and 15356 transitions. [2021-10-07 15:20:07,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:20:07,857 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.8) internal successors, (45), 25 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 23 [2021-10-07 15:20:07,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:20:07,867 INFO L225 Difference]: With dead ends: 4413 [2021-10-07 15:20:07,867 INFO L226 Difference]: Without dead ends: 4413 [2021-10-07 15:20:07,867 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 2714.0ms TimeCoverageRelationStatistics Valid=186, Invalid=1620, Unknown=0, NotChecked=0, Total=1806 [2021-10-07 15:20:07,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2021-10-07 15:20:07,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4216. [2021-10-07 15:20:07,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4216 states, 4200 states have (on average 3.5547619047619046) internal successors, (14930), 4215 states have internal predecessors, (14930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:20:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4216 states to 4216 states and 14930 transitions. [2021-10-07 15:20:07,937 INFO L78 Accepts]: Start accepts. Automaton has 4216 states and 14930 transitions. Word has length 23 [2021-10-07 15:20:07,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:20:07,938 INFO L470 AbstractCegarLoop]: Abstraction has 4216 states and 14930 transitions. [2021-10-07 15:20:07,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.8) internal successors, (45), 25 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) [2021-10-07 15:20:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand 4216 states and 14930 transitions. [2021-10-07 15:20:07,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:20:07,940 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:20:07,940 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:20:07,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2021-10-07 15:20:08,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122,118 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:20:08,141 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:20:08,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:20:08,142 INFO L82 PathProgramCache]: Analyzing trace with hash 567659716, now seen corresponding path program 3 times [2021-10-07 15:20:08,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:20:08,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149707429] [2021-10-07 15:20:08,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:20:08,143 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:20:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:20:08,588 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:20:08,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:20:08,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149707429] [2021-10-07 15:20:08,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149707429] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:20:08,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291123943] [2021-10-07 15:20:08,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:20:08,589 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:20:08,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:20:08,590 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) [2021-10-07 15:20:08,591 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 [2021-10-07 15:20:11,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:20:11,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:20:11,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 77 conjunts are in the unsatisfiable core [2021-10-07 15:20:11,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:20:11,955 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-07 15:20:11,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 108 [2021-10-07 15:20:13,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:20:13,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:20:13,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:20:13,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:20:13,744 INFO L354 Elim1Store]: treesize reduction 116, result has 34.5 percent of original size [2021-10-07 15:20:13,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 68 treesize of output 112 [2021-10-07 15:20:13,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:20:14,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:20:14,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-10-07 15:20:14,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-10-07 15:20:15,331 INFO L354 Elim1Store]: treesize reduction 172, result has 13.1 percent of original size [2021-10-07 15:20:15,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 72 [2021-10-07 15:20:15,836 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:20:15,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291123943] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:20:15,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:20:15,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16] total 25 [2021-10-07 15:20:15,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696804013] [2021-10-07 15:20:15,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-07 15:20:15,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:20:15,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-07 15:20:15,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:20:15,837 INFO L87 Difference]: Start difference. First operand 4216 states and 14930 transitions. Second operand has 27 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 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) [2021-10-07 15:20:20,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:20:20,407 INFO L93 Difference]: Finished difference Result 4306 states and 15076 transitions. [2021-10-07 15:20:20,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 15:20:20,407 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 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 23 [2021-10-07 15:20:20,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:20:20,416 INFO L225 Difference]: With dead ends: 4306 [2021-10-07 15:20:20,416 INFO L226 Difference]: Without dead ends: 4279 [2021-10-07 15:20:20,417 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 3728.8ms TimeCoverageRelationStatistics Valid=241, Invalid=2111, Unknown=0, NotChecked=0, Total=2352 [2021-10-07 15:20:20,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4279 states. [2021-10-07 15:20:20,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4279 to 4159. [2021-10-07 15:20:20,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4159 states, 4143 states have (on average 3.560222061308231) internal successors, (14750), 4158 states have internal predecessors, (14750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:20:20,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4159 states to 4159 states and 14750 transitions. [2021-10-07 15:20:20,492 INFO L78 Accepts]: Start accepts. Automaton has 4159 states and 14750 transitions. Word has length 23 [2021-10-07 15:20:20,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:20:20,493 INFO L470 AbstractCegarLoop]: Abstraction has 4159 states and 14750 transitions. [2021-10-07 15:20:20,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 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) [2021-10-07 15:20:20,493 INFO L276 IsEmpty]: Start isEmpty. Operand 4159 states and 14750 transitions. [2021-10-07 15:20:20,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:20:20,495 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:20:20,495 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:20:20,532 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 [2021-10-07 15:20:20,696 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,SelfDestructingSolverStorable123 [2021-10-07 15:20:20,696 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:20:20,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:20:20,697 INFO L82 PathProgramCache]: Analyzing trace with hash -327595566, now seen corresponding path program 5 times [2021-10-07 15:20:20,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:20:20,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152186188] [2021-10-07 15:20:20,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:20:20,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:20:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:20:21,181 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:20:21,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:20:21,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152186188] [2021-10-07 15:20:21,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152186188] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:20:21,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222290260] [2021-10-07 15:20:21,182 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:20:21,182 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:20:21,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:20:21,183 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) [2021-10-07 15:20:21,184 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 [2021-10-07 15:20:24,274 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:20:24,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:20:24,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-07 15:20:24,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:20:24,643 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:20:24,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-07 15:20:24,889 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:20:24,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222290260] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:20:24,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:20:24,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 17 [2021-10-07 15:20:24,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87405646] [2021-10-07 15:20:24,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 15:20:24,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:20:24,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 15:20:24,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:20:24,890 INFO L87 Difference]: Start difference. First operand 4159 states and 14750 transitions. Second operand has 19 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 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) [2021-10-07 15:20:26,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:20:26,324 INFO L93 Difference]: Finished difference Result 4957 states and 17823 transitions. [2021-10-07 15:20:26,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 15:20:26,324 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 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 23 [2021-10-07 15:20:26,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:20:26,336 INFO L225 Difference]: With dead ends: 4957 [2021-10-07 15:20:26,336 INFO L226 Difference]: Without dead ends: 4957 [2021-10-07 15:20:26,336 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 982.8ms TimeCoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:20:26,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4957 states. [2021-10-07 15:20:26,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4957 to 4417. [2021-10-07 15:20:26,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4417 states, 4401 states have (on average 3.708702567598273) internal successors, (16322), 4416 states have internal predecessors, (16322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:20:26,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4417 states to 4417 states and 16322 transitions. [2021-10-07 15:20:26,416 INFO L78 Accepts]: Start accepts. Automaton has 4417 states and 16322 transitions. Word has length 23 [2021-10-07 15:20:26,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:20:26,416 INFO L470 AbstractCegarLoop]: Abstraction has 4417 states and 16322 transitions. [2021-10-07 15:20:26,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 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) [2021-10-07 15:20:26,416 INFO L276 IsEmpty]: Start isEmpty. Operand 4417 states and 16322 transitions. [2021-10-07 15:20:26,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:20:26,419 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:20:26,419 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:20:26,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0 [2021-10-07 15:20:26,619 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,SelfDestructingSolverStorable124 [2021-10-07 15:20:26,619 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2021-10-07 15:20:26,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:20:26,620 INFO L82 PathProgramCache]: Analyzing trace with hash -327595484, now seen corresponding path program 4 times [2021-10-07 15:20:26,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:20:26,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254074687] [2021-10-07 15:20:26,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:20:26,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:20:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2021-10-07 15:20:27,853 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 15:20:27,853 WARN L223 SmtUtils]: Removed 12 from assertion stack [2021-10-07 15:20:27,855 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-10-07 15:20:27,855 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 11ms.. [2021-10-07 15:20:27,856 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,857 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,857 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,857 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,857 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,857 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,857 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,858 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,858 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,858 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,858 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,858 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,858 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,859 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,859 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,859 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,859 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,859 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,859 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,859 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,859 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 15:20:27,860 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 15:20:27,860 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-07 15:20:27,860 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,860 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,860 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,860 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,860 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,860 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,860 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,860 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,861 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,861 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,861 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,861 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,861 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,861 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,861 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:27,867 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 15:20:27,868 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 15:20:27,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 03:20:27 BasicIcfg [2021-10-07 15:20:27,869 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 15:20:27,870 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.witnessprinter [2021-10-07 15:20:27,870 INFO L168 Benchmark]: Toolchain (without parser) took 720792.53 ms. Allocated memory was 158.3 MB in the beginning and 1.5 GB in the end (delta: 1.4 GB). Free memory was 132.8 MB in the beginning and 432.0 MB in the end (delta: -299.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 8.0 GB. [2021-10-07 15:20:27,870 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 158.3 MB. Free memory was 129.8 MB in the beginning and 129.8 MB in the end (delta: 84.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 15:20:27,871 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.01 ms. Allocated memory is still 158.3 MB. Free memory was 132.4 MB in the beginning and 120.7 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-07 15:20:27,871 INFO L168 Benchmark]: Boogie Procedure Inliner took 109.43 ms. Allocated memory is still 158.3 MB. Free memory was 120.7 MB in the beginning and 118.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:20:27,871 INFO L168 Benchmark]: Boogie Preprocessor took 49.71 ms. Allocated memory is still 158.3 MB. Free memory was 118.3 MB in the beginning and 116.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 15:20:27,871 INFO L168 Benchmark]: RCFGBuilder took 1412.46 ms. Allocated memory is still 158.3 MB. Free memory was 116.4 MB in the beginning and 112.0 MB in the end (delta: 4.5 MB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. [2021-10-07 15:20:27,871 INFO L168 Benchmark]: TraceAbstraction took 718871.09 ms. Allocated memory was 158.3 MB in the beginning and 1.5 GB in the end (delta: 1.4 GB). Free memory was 111.5 MB in the beginning and 432.0 MB in the end (delta: -320.5 MB). Peak memory consumption was 1.0 GB. Max. memory is 8.0 GB. [2021-10-07 15:20:27,872 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 158.3 MB. Free memory was 129.8 MB in the beginning and 129.8 MB in the end (delta: 84.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 334.01 ms. Allocated memory is still 158.3 MB. Free memory was 132.4 MB in the beginning and 120.7 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 109.43 ms. Allocated memory is still 158.3 MB. Free memory was 120.7 MB in the beginning and 118.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.71 ms. Allocated memory is still 158.3 MB. Free memory was 118.3 MB in the beginning and 116.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1412.46 ms. Allocated memory is still 158.3 MB. Free memory was 116.4 MB in the beginning and 112.0 MB in the end (delta: 4.5 MB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 718871.09 ms. Allocated memory was 158.3 MB in the beginning and 1.5 GB in the end (delta: 1.4 GB). Free memory was 111.5 MB in the beginning and 432.0 MB in the end (delta: -320.5 MB). Peak memory consumption was 1.0 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10946.3ms, 212 PlacesBefore, 55 PlacesAfterwards, 220 TransitionsBefore, 51 TransitionsAfterwards, 3252 CoEnabledTransitionPairs, 7 FixpointIterations, 131 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 25 TrivialYvCompositions, 9 ConcurrentYvCompositions, 12 ChoiceCompositions, 232 TotalNumberOfCompositions, 5796 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4197, positive: 4094, positive conditional: 0, positive unconditional: 4094, negative: 103, negative conditional: 0, negative unconditional: 103, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2054, positive: 2024, positive conditional: 0, positive unconditional: 2024, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2054, positive: 2012, positive conditional: 0, positive unconditional: 2012, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 42, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 143, positive: 53, positive conditional: 0, positive unconditional: 53, negative: 90, negative conditional: 0, negative unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4197, positive: 2070, positive conditional: 0, positive unconditional: 2070, negative: 73, negative conditional: 0, negative unconditional: 73, unknown: 2054, unknown conditional: 0, unknown unconditional: 2054] , Statistics on independence cache: Total cache size (in pairs): 219, Positive cache size: 210, Positive conditional cache size: 0, Positive unconditional cache size: 210, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - 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: 93]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 11ms.. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 11ms.. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 11ms.. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 11ms.. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 11ms.. - TimeoutResultAtElement [Line: 47]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 11ms.. - TimeoutResultAtElement [Line: 47]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 11ms.. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 11ms.. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 11ms.. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 11ms.. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 11ms.. - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 11ms.. - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 11ms.. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 11ms.. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 11ms.. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 11ms.. - TimeoutResultAtElement [Line: 136]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 11ms.. - TimeoutResultAtElement [Line: 136]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 11ms.. - TimeoutResultAtElement [Line: 136]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 11ms.. - TimeoutResultAtElement [Line: 136]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 11ms.. - TimeoutResultAtElement [Line: 119]: 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 24 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 11ms.. - TimeoutResultAtElement [Line: 118]: 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 24 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 11ms.. - TimeoutResultAtElement [Line: 120]: 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 24 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38 for 11ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 255 locations, 39 error locations. Started 1 CEGAR loops. OverallTime: 718693.3ms, OverallIterations: 126, TraceHistogramMax: 4, EmptinessCheckTime: 209.9ms, AutomataDifference: 298659.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11107.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5141 SDtfs, 20405 SDslu, 45850 SDs, 0 SdLazy, 86105 SolverSat, 6452 SolverUnsat, 28 SolverUnknown, 0 SolverNotchecked, 137064.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4816 GetRequests, 1010 SyntacticMatches, 1 SemanticMatches, 3805 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25198 ImplicationChecksByTransitivity, 221697.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4825occurred in iteration=94, InterpolantAutomatonStates: 2394, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 7762.5ms AutomataMinimizationTime, 125 MinimizatonAttempts, 121723 StatesRemovedByMinimization, 119 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1574.0ms SsaConstructionTime, 8567.6ms SatisfiabilityAnalysisTime, 205858.0ms InterpolantComputationTime, 4270 NumberOfCodeBlocks, 4208 NumberOfCodeBlocksAsserted, 327 NumberOfCheckSat, 4026 ConstructedInterpolants, 282 QuantifiedInterpolants, 137262 SizeOfPredicates, 1845 NumberOfNonLiveVariables, 28112 ConjunctsInSsa, 3765 ConjunctsInUnsatCore, 244 InterpolantComputations, 30 PerfectInterpolantSequences, 707/2078 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