/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-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 15:08:24,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 15:08:24,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 15:08:24,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 15:08:24,541 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 15:08:24,586 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 15:08:24,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 15:08:24,587 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 15:08:24,587 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 15:08:24,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 15:08:24,591 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 15:08:24,591 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 15:08:24,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 15:08:24,592 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 15:08:24,592 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 15:08:24,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 15:08:24,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 15:08:24,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 15:08:24,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-07 15:08:24,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 15:08:24,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-07 15:08:24,595 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-07 15:08:24,595 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 15:08:24,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-07 15:08:24,595 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 15:08:24,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-07 15:08:24,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 15:08:24,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 15:08:24,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 15:08:24,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:08:24,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 15:08:24,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 15:08:24,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-07 15:08:24,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-07 15:08:24,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-07 15:08:24,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-07 15:08:24,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 15:08:24,599 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 15:08:25,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 15:08:25,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 15:08:25,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 15:08:25,060 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 15:08:25,060 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 15:08:25,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2021-10-07 15:08:25,127 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c6964af7/7c73265f2a69494a88c130412088b2ed/FLAG034c2e1d8 [2021-10-07 15:08:25,679 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 15:08:25,680 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2021-10-07 15:08:25,687 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c6964af7/7c73265f2a69494a88c130412088b2ed/FLAG034c2e1d8 [2021-10-07 15:08:26,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c6964af7/7c73265f2a69494a88c130412088b2ed [2021-10-07 15:08:26,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 15:08:26,066 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-07 15:08:26,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 15:08:26,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 15:08:26,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 15:08:26,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:08:26" (1/1) ... [2021-10-07 15:08:26,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31536ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:26, skipping insertion in model container [2021-10-07 15:08:26,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:08:26" (1/1) ... [2021-10-07 15:08:26,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 15:08:26,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:08:26,287 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-2.wvr.c[2689,2702] [2021-10-07 15:08:26,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:08:26,303 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 15:08:26,331 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-2.wvr.c[2689,2702] [2021-10-07 15:08:26,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:08:26,353 INFO L208 MainTranslator]: Completed translation [2021-10-07 15:08:26,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:26 WrapperNode [2021-10-07 15:08:26,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 15:08:26,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 15:08:26,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 15:08:26,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 15:08:26,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:26" (1/1) ... [2021-10-07 15:08:26,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:26" (1/1) ... [2021-10-07 15:08:26,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 15:08:26,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 15:08:26,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 15:08:26,408 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 15:08:26,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:26" (1/1) ... [2021-10-07 15:08:26,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:26" (1/1) ... [2021-10-07 15:08:26,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:26" (1/1) ... [2021-10-07 15:08:26,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:26" (1/1) ... [2021-10-07 15:08:26,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:26" (1/1) ... [2021-10-07 15:08:26,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:26" (1/1) ... [2021-10-07 15:08:26,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:26" (1/1) ... [2021-10-07 15:08:26,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 15:08:26,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 15:08:26,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 15:08:26,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 15:08:26,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:26" (1/1) ... [2021-10-07 15:08:26,467 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:08:26,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:26,495 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 15:08:26,517 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 15:08:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 15:08:26,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 15:08:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 15:08:26,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 15:08:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-07 15:08:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 15:08:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-07 15:08:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 15:08:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 15:08:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-07 15:08:26,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 15:08:26,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 15:08:26,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-07 15:08:26,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 15:08:26,563 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 15:08:27,430 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 15:08:27,430 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-10-07 15:08:27,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:08:27 BoogieIcfgContainer [2021-10-07 15:08:27,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 15:08:27,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 15:08:27,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 15:08:27,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 15:08:27,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:08:26" (1/3) ... [2021-10-07 15:08:27,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1687963c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:08:27, skipping insertion in model container [2021-10-07 15:08:27,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:08:26" (2/3) ... [2021-10-07 15:08:27,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1687963c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:08:27, skipping insertion in model container [2021-10-07 15:08:27,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:08:27" (3/3) ... [2021-10-07 15:08:27,451 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-2.wvr.c [2021-10-07 15:08:27,462 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-07 15:08:27,462 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 15:08:27,463 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-10-07 15:08:27,465 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 15:08:27,516 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,517 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,517 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,518 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,518 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,518 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,518 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,519 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,519 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,519 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,519 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,519 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,519 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,520 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,520 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,520 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,520 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,520 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,521 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,521 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,521 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,521 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,521 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,521 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,522 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,522 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,522 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,522 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,522 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,522 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,523 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,523 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,523 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,523 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,524 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,524 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,524 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,524 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,524 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,525 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,525 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,525 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,525 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,525 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,525 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,526 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,526 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,526 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,526 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,526 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,527 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,527 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,527 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,527 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,527 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,528 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,528 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,528 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,528 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,528 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,529 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,529 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,529 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,529 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,530 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,530 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,530 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,530 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,530 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,530 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,531 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,531 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,531 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,532 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,532 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,532 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,533 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,533 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,533 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,533 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,534 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,534 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,534 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,534 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,534 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,535 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,535 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,535 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,535 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,535 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,536 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,536 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,536 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,536 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,536 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,536 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,537 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,537 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,537 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,537 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,537 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,537 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,538 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,538 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,538 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,538 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,538 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,539 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,539 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,540 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,540 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,540 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,540 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,540 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,541 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,541 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,541 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,541 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,541 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,542 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,542 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,542 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,542 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,545 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,546 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,546 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,546 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,546 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,547 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,547 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,549 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,549 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,550 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,550 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,550 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,550 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,550 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,550 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,551 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,551 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:08:27,557 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-07 15:08:27,605 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 15:08:27,616 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 15:08:27,619 INFO L340 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2021-10-07 15:08:27,655 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 15:08:27,667 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 139 transitions, 294 flow [2021-10-07 15:08:27,670 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 139 transitions, 294 flow [2021-10-07 15:08:27,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 135 places, 139 transitions, 294 flow [2021-10-07 15:08:27,737 INFO L129 PetriNetUnfolder]: 11/137 cut-off events. [2021-10-07 15:08:27,737 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-07 15:08:27,742 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 137 events. 11/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 140 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 100. Up to 3 conditions per place. [2021-10-07 15:08:27,746 INFO L116 LiptonReduction]: Number of co-enabled transitions 1142 [2021-10-07 15:08:34,856 INFO L131 LiptonReduction]: Checked pairs total: 1626 [2021-10-07 15:08:34,857 INFO L133 LiptonReduction]: Total number of compositions: 151 [2021-10-07 15:08:34,868 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 31 transitions, 78 flow [2021-10-07 15:08:34,910 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 159 states, 123 states have (on average 3.0569105691056913) internal successors, (376), 158 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:34,912 INFO L276 IsEmpty]: Start isEmpty. Operand has 159 states, 123 states have (on average 3.0569105691056913) internal successors, (376), 158 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:34,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 15:08:34,918 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:34,918 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 15:08:34,919 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:08:34,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:34,925 INFO L82 PathProgramCache]: Analyzing trace with hash 21388, now seen corresponding path program 1 times [2021-10-07 15:08:34,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:34,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346002985] [2021-10-07 15:08:34,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:34,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:35,147 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 15:08:35,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:35,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346002985] [2021-10-07 15:08:35,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346002985] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:35,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:08:35,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 15:08:35,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845637981] [2021-10-07 15:08:35,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:08:35,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:35,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:08:35,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:08:35,179 INFO L87 Difference]: Start difference. First operand has 159 states, 123 states have (on average 3.0569105691056913) internal successors, (376), 158 states have internal predecessors, (376), 0 states have call successors, (0), 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 15:08:35,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:35,251 INFO L93 Difference]: Finished difference Result 219 states and 515 transitions. [2021-10-07 15:08:35,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:08:35,256 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 15:08:35,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:35,282 INFO L225 Difference]: With dead ends: 219 [2021-10-07 15:08:35,282 INFO L226 Difference]: Without dead ends: 219 [2021-10-07 15:08:35,284 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:08:35,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-10-07 15:08:35,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 112. [2021-10-07 15:08:35,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 91 states have (on average 2.868131868131868) internal successors, (261), 111 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:35,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 261 transitions. [2021-10-07 15:08:35,368 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 261 transitions. Word has length 2 [2021-10-07 15:08:35,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:35,369 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 261 transitions. [2021-10-07 15:08:35,369 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 15:08:35,370 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 261 transitions. [2021-10-07 15:08:35,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:08:35,370 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:35,370 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:08:35,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-07 15:08:35,371 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:08:35,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:35,372 INFO L82 PathProgramCache]: Analyzing trace with hash 663615, now seen corresponding path program 1 times [2021-10-07 15:08:35,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:35,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660277603] [2021-10-07 15:08:35,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:35,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:35,472 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 15:08:35,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:35,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660277603] [2021-10-07 15:08:35,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660277603] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:35,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575267800] [2021-10-07 15:08:35,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:35,474 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:35,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:35,476 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 15:08:35,501 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 15:08:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:35,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:08:35,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:35,588 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 15:08:35,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575267800] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:35,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:35,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-07 15:08:35,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181431570] [2021-10-07 15:08:35,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 15:08:35,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:35,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 15:08:35,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:08:35,592 INFO L87 Difference]: Start difference. First operand 112 states and 261 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 15:08:35,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:35,631 INFO L93 Difference]: Finished difference Result 327 states and 772 transitions. [2021-10-07 15:08:35,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:08:35,632 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 15:08:35,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:35,636 INFO L225 Difference]: With dead ends: 327 [2021-10-07 15:08:35,637 INFO L226 Difference]: Without dead ends: 327 [2021-10-07 15:08:35,637 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:08:35,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-10-07 15:08:35,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 113. [2021-10-07 15:08:35,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 92 states have (on average 2.869565217391304) internal successors, (264), 112 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:35,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 264 transitions. [2021-10-07 15:08:35,653 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 264 transitions. Word has length 3 [2021-10-07 15:08:35,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:35,654 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 264 transitions. [2021-10-07 15:08:35,654 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 15:08:35,654 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 264 transitions. [2021-10-07 15:08:35,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:08:35,655 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:35,655 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:08:35,705 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 15:08:35,869 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 15:08:35,870 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:08:35,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:35,871 INFO L82 PathProgramCache]: Analyzing trace with hash 663616, now seen corresponding path program 1 times [2021-10-07 15:08:35,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:35,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965680075] [2021-10-07 15:08:35,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:35,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:35,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:35,958 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 15:08:35,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:35,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965680075] [2021-10-07 15:08:35,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965680075] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:35,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108005846] [2021-10-07 15:08:35,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:35,960 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:35,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:35,970 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 15:08:35,989 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 15:08:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:36,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:08:36,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:36,048 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 15:08:36,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108005846] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:36,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:08:36,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2021-10-07 15:08:36,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073538968] [2021-10-07 15:08:36,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:08:36,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:36,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:08:36,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:08:36,051 INFO L87 Difference]: Start difference. First operand 113 states and 264 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 15:08:36,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:36,072 INFO L93 Difference]: Finished difference Result 219 states and 516 transitions. [2021-10-07 15:08:36,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:08:36,073 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 15:08:36,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:36,076 INFO L225 Difference]: With dead ends: 219 [2021-10-07 15:08:36,076 INFO L226 Difference]: Without dead ends: 219 [2021-10-07 15:08:36,076 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:08:36,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-10-07 15:08:36,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 112. [2021-10-07 15:08:36,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 92 states have (on average 2.847826086956522) internal successors, (262), 111 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:36,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 262 transitions. [2021-10-07 15:08:36,087 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 262 transitions. Word has length 3 [2021-10-07 15:08:36,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:36,088 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 262 transitions. [2021-10-07 15:08:36,088 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 15:08:36,088 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 262 transitions. [2021-10-07 15:08:36,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 15:08:36,088 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:36,089 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-07 15:08:36,124 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 15:08:36,302 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 15:08:36,303 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:08:36,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:36,305 INFO L82 PathProgramCache]: Analyzing trace with hash 20572652, now seen corresponding path program 2 times [2021-10-07 15:08:36,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:36,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262720675] [2021-10-07 15:08:36,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:36,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:36,357 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 15:08:36,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:36,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262720675] [2021-10-07 15:08:36,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262720675] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:36,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846371769] [2021-10-07 15:08:36,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:08:36,359 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:36,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:36,360 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 15:08:36,391 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 15:08:36,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:08:36,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:36,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:08:36,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:36,455 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 15:08:36,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846371769] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:36,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:08:36,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-07 15:08:36,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199480792] [2021-10-07 15:08:36,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:08:36,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:36,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:08:36,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:08:36,458 INFO L87 Difference]: Start difference. First operand 112 states and 262 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 15:08:36,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:36,463 INFO L93 Difference]: Finished difference Result 111 states and 261 transitions. [2021-10-07 15:08:36,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:08:36,464 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 15:08:36,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:36,465 INFO L225 Difference]: With dead ends: 111 [2021-10-07 15:08:36,466 INFO L226 Difference]: Without dead ends: 111 [2021-10-07 15:08:36,466 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.0ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:08:36,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-07 15:08:36,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2021-10-07 15:08:36,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 90 states have (on average 2.8555555555555556) internal successors, (257), 108 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:36,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 257 transitions. [2021-10-07 15:08:36,474 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 257 transitions. Word has length 4 [2021-10-07 15:08:36,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:36,474 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 257 transitions. [2021-10-07 15:08:36,474 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 15:08:36,475 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 257 transitions. [2021-10-07 15:08:36,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:08:36,475 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:36,475 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:08:36,509 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 15:08:36,690 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 15:08:36,691 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:08:36,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:36,693 INFO L82 PathProgramCache]: Analyzing trace with hash 638128059, now seen corresponding path program 1 times [2021-10-07 15:08:36,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:36,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194591522] [2021-10-07 15:08:36,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:36,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:36,732 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 15:08:36,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:36,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194591522] [2021-10-07 15:08:36,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194591522] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:36,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:08:36,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 15:08:36,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16596275] [2021-10-07 15:08:36,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:08:36,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:36,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:08:36,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:08:36,735 INFO L87 Difference]: Start difference. First operand 109 states and 257 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:36,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:36,754 INFO L93 Difference]: Finished difference Result 173 states and 408 transitions. [2021-10-07 15:08:36,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:08:36,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:08:36,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:36,757 INFO L225 Difference]: With dead ends: 173 [2021-10-07 15:08:36,757 INFO L226 Difference]: Without dead ends: 173 [2021-10-07 15:08:36,757 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:08:36,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-10-07 15:08:36,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 123. [2021-10-07 15:08:36,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 104 states have (on average 3.1826923076923075) internal successors, (331), 122 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:36,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 331 transitions. [2021-10-07 15:08:36,766 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 331 transitions. Word has length 5 [2021-10-07 15:08:36,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:36,767 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 331 transitions. [2021-10-07 15:08:36,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:36,767 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 331 transitions. [2021-10-07 15:08:36,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:08:36,767 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:36,768 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:08:36,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-07 15:08:36,768 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:08:36,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:36,769 INFO L82 PathProgramCache]: Analyzing trace with hash 638128016, now seen corresponding path program 1 times [2021-10-07 15:08:36,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:36,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517410197] [2021-10-07 15:08:36,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:36,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:36,815 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 15:08:36,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:36,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517410197] [2021-10-07 15:08:36,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517410197] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:36,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:08:36,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 15:08:36,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30711035] [2021-10-07 15:08:36,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:08:36,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:36,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:08:36,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:08:36,820 INFO L87 Difference]: Start difference. First operand 123 states and 331 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:36,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:36,883 INFO L93 Difference]: Finished difference Result 137 states and 352 transitions. [2021-10-07 15:08:36,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:08:36,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:08:36,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:36,885 INFO L225 Difference]: With dead ends: 137 [2021-10-07 15:08:36,885 INFO L226 Difference]: Without dead ends: 124 [2021-10-07 15:08:36,886 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 15:08:36,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-07 15:08:36,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-10-07 15:08:36,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 105 states have (on average 3.1619047619047618) internal successors, (332), 123 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:36,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 332 transitions. [2021-10-07 15:08:36,893 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 332 transitions. Word has length 5 [2021-10-07 15:08:36,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:36,894 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 332 transitions. [2021-10-07 15:08:36,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:36,894 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 332 transitions. [2021-10-07 15:08:36,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 15:08:36,894 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:36,895 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 15:08:36,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-07 15:08:36,895 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:08:36,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:36,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1704123907, now seen corresponding path program 1 times [2021-10-07 15:08:36,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:36,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133432618] [2021-10-07 15:08:36,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:36,896 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:36,951 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 15:08:36,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:36,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133432618] [2021-10-07 15:08:36,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133432618] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:36,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263436055] [2021-10-07 15:08:36,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:36,952 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:36,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:36,953 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 15:08:36,962 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 15:08:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:37,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:08:37,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:37,057 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 15:08:37,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263436055] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:37,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:08:37,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-07 15:08:37,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782485083] [2021-10-07 15:08:37,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:08:37,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:37,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:08:37,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:08:37,062 INFO L87 Difference]: Start difference. First operand 124 states and 332 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:37,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:37,082 INFO L93 Difference]: Finished difference Result 82 states and 200 transitions. [2021-10-07 15:08:37,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:08:37,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-07 15:08:37,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:37,088 INFO L225 Difference]: With dead ends: 82 [2021-10-07 15:08:37,088 INFO L226 Difference]: Without dead ends: 82 [2021-10-07 15:08:37,090 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 13.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:08:37,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-07 15:08:37,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-10-07 15:08:37,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 74 states have (on average 2.7027027027027026) internal successors, (200), 81 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:37,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 200 transitions. [2021-10-07 15:08:37,098 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 200 transitions. Word has length 6 [2021-10-07 15:08:37,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:37,099 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 200 transitions. [2021-10-07 15:08:37,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:37,103 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 200 transitions. [2021-10-07 15:08:37,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:08:37,103 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:37,104 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:37,140 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 15:08:37,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:37,318 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:08:37,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:37,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1288230245, now seen corresponding path program 1 times [2021-10-07 15:08:37,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:37,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311495518] [2021-10-07 15:08:37,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:37,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:37,380 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 15:08:37,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:37,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311495518] [2021-10-07 15:08:37,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311495518] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:37,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302708972] [2021-10-07 15:08:37,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:37,382 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:37,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:37,383 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 15:08:37,415 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 15:08:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:37,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:08:37,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:37,551 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 15:08:37,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302708972] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:37,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:37,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2021-10-07 15:08:37,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638464742] [2021-10-07 15:08:37,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:08:37,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:37,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:08:37,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:08:37,553 INFO L87 Difference]: Start difference. First operand 82 states and 200 transitions. Second operand has 8 states, 7 states have (on average 2.0) 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 15:08:37,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:37,737 INFO L93 Difference]: Finished difference Result 190 states and 439 transitions. [2021-10-07 15:08:37,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:08:37,738 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) 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 7 [2021-10-07 15:08:37,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:37,740 INFO L225 Difference]: With dead ends: 190 [2021-10-07 15:08:37,740 INFO L226 Difference]: Without dead ends: 184 [2021-10-07 15:08:37,740 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 78.1ms TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:08:37,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-07 15:08:37,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 124. [2021-10-07 15:08:37,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 114 states have (on average 2.8508771929824563) internal successors, (325), 123 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:37,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 325 transitions. [2021-10-07 15:08:37,747 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 325 transitions. Word has length 7 [2021-10-07 15:08:37,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:37,747 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 325 transitions. [2021-10-07 15:08:37,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) 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 15:08:37,748 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 325 transitions. [2021-10-07 15:08:37,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 15:08:37,748 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:37,749 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:37,782 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 15:08:37,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:37,964 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:08:37,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:37,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1629465099, now seen corresponding path program 1 times [2021-10-07 15:08:37,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:37,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653160272] [2021-10-07 15:08:37,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:37,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:38,032 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 15:08:38,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:38,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653160272] [2021-10-07 15:08:38,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653160272] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:38,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136054440] [2021-10-07 15:08:38,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:38,034 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:38,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:38,041 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 15:08:38,060 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 15:08:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:38,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:08:38,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:38,126 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 15:08:38,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136054440] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:38,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:08:38,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2021-10-07 15:08:38,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968894149] [2021-10-07 15:08:38,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:08:38,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:38,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:08:38,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:08:38,129 INFO L87 Difference]: Start difference. First operand 124 states and 325 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:38,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:38,145 INFO L93 Difference]: Finished difference Result 136 states and 323 transitions. [2021-10-07 15:08:38,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:08:38,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 15:08:38,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:38,147 INFO L225 Difference]: With dead ends: 136 [2021-10-07 15:08:38,147 INFO L226 Difference]: Without dead ends: 136 [2021-10-07 15:08:38,147 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:08:38,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-07 15:08:38,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 112. [2021-10-07 15:08:38,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 105 states have (on average 2.704761904761905) internal successors, (284), 111 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:38,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 284 transitions. [2021-10-07 15:08:38,156 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 284 transitions. Word has length 8 [2021-10-07 15:08:38,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:38,157 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 284 transitions. [2021-10-07 15:08:38,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:38,157 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 284 transitions. [2021-10-07 15:08:38,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 15:08:38,159 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:38,159 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:38,194 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 15:08:38,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:38,374 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:08:38,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:38,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1275875250, now seen corresponding path program 1 times [2021-10-07 15:08:38,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:38,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086746035] [2021-10-07 15:08:38,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:38,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:38,494 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 15:08:38,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:38,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086746035] [2021-10-07 15:08:38,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086746035] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:38,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:08:38,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 15:08:38,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323690612] [2021-10-07 15:08:38,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:08:38,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:38,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:08:38,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:08:38,500 INFO L87 Difference]: Start difference. First operand 112 states and 284 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 15:08:38,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:38,518 INFO L93 Difference]: Finished difference Result 94 states and 219 transitions. [2021-10-07 15:08:38,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:08:38,519 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 8 [2021-10-07 15:08:38,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:38,520 INFO L225 Difference]: With dead ends: 94 [2021-10-07 15:08:38,520 INFO L226 Difference]: Without dead ends: 94 [2021-10-07 15:08:38,520 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 15:08:38,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-07 15:08:38,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-10-07 15:08:38,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 87 states have (on average 2.5172413793103448) internal successors, (219), 93 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:38,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 219 transitions. [2021-10-07 15:08:38,525 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 219 transitions. Word has length 8 [2021-10-07 15:08:38,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:38,526 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 219 transitions. [2021-10-07 15:08:38,526 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 15:08:38,526 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 219 transitions. [2021-10-07 15:08:38,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 15:08:38,527 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:38,528 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-10-07 15:08:38,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-07 15:08:38,528 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:08:38,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:38,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1026190075, now seen corresponding path program 2 times [2021-10-07 15:08:38,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:38,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266818794] [2021-10-07 15:08:38,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:38,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:38,587 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 15:08:38,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:38,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266818794] [2021-10-07 15:08:38,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266818794] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:38,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768171047] [2021-10-07 15:08:38,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:08:38,588 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:38,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:38,590 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 15:08:38,611 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 15:08:38,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:08:38,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:38,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:08:38,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:38,686 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 15:08:38,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768171047] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:38,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:08:38,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2021-10-07 15:08:38,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178785439] [2021-10-07 15:08:38,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:08:38,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:38,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:08:38,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:08:38,688 INFO L87 Difference]: Start difference. First operand 94 states and 219 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 15:08:38,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:38,693 INFO L93 Difference]: Finished difference Result 82 states and 190 transitions. [2021-10-07 15:08:38,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:08:38,694 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 9 [2021-10-07 15:08:38,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:38,695 INFO L225 Difference]: With dead ends: 82 [2021-10-07 15:08:38,695 INFO L226 Difference]: Without dead ends: 78 [2021-10-07 15:08:38,695 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 9.0ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:08:38,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-07 15:08:38,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 68. [2021-10-07 15:08:38,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 64 states have (on average 2.28125) internal successors, (146), 67 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:38,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 146 transitions. [2021-10-07 15:08:38,698 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 146 transitions. Word has length 9 [2021-10-07 15:08:38,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:38,699 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 146 transitions. [2021-10-07 15:08:38,699 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 15:08:38,699 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 146 transitions. [2021-10-07 15:08:38,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 15:08:38,700 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:38,700 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:38,735 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 15:08:38,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:38,914 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:08:38,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:38,915 INFO L82 PathProgramCache]: Analyzing trace with hash -2131724498, now seen corresponding path program 1 times [2021-10-07 15:08:38,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:38,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780369036] [2021-10-07 15:08:38,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:38,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:39,252 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 15:08:39,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:39,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780369036] [2021-10-07 15:08:39,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780369036] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:39,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592105682] [2021-10-07 15:08:39,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:39,253 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:39,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:39,254 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 15:08:39,277 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 15:08:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:39,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-07 15:08:39,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:39,381 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 275 treesize of output 267 [2021-10-07 15:08:39,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 15:08:39,555 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 15:08:39,720 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:08:39,720 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 15:08:39,781 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 15:08:39,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592105682] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:39,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:39,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:08:39,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645286936] [2021-10-07 15:08:39,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:08:39,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:39,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:08:39,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:08:39,784 INFO L87 Difference]: Start difference. First operand 68 states and 146 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:40,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:40,009 INFO L93 Difference]: Finished difference Result 78 states and 158 transitions. [2021-10-07 15:08:40,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:08:40,010 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 15:08:40,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:40,010 INFO L225 Difference]: With dead ends: 78 [2021-10-07 15:08:40,011 INFO L226 Difference]: Without dead ends: 68 [2021-10-07 15:08:40,011 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 291.0ms TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:08:40,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-07 15:08:40,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-10-07 15:08:40,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 64 states have (on average 2.1875) internal successors, (140), 67 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:40,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 140 transitions. [2021-10-07 15:08:40,014 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 140 transitions. Word has length 10 [2021-10-07 15:08:40,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:40,015 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 140 transitions. [2021-10-07 15:08:40,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:40,015 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 140 transitions. [2021-10-07 15:08:40,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 15:08:40,016 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:40,016 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:40,051 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 15:08:40,225 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,SelfDestructingSolverStorable11 [2021-10-07 15:08:40,226 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:08:40,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:40,227 INFO L82 PathProgramCache]: Analyzing trace with hash -2138111769, now seen corresponding path program 1 times [2021-10-07 15:08:40,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:40,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477755913] [2021-10-07 15:08:40,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:40,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:40,430 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 15:08:40,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:40,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477755913] [2021-10-07 15:08:40,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477755913] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:40,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093580195] [2021-10-07 15:08:40,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:40,431 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:40,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:40,433 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 15:08:40,456 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 15:08:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:40,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-07 15:08:40,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:40,562 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 283 treesize of output 275 [2021-10-07 15:08:40,670 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 29 treesize of output 25 [2021-10-07 15:08:40,763 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:08:40,763 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 15:08:40,894 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:08:40,894 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 15:08:41,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:41,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093580195] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:41,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:41,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-10-07 15:08:41,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778730098] [2021-10-07 15:08:41,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:08:41,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:41,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:08:41,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:08:41,035 INFO L87 Difference]: Start difference. First operand 68 states and 140 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:41,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:41,502 INFO L93 Difference]: Finished difference Result 73 states and 147 transitions. [2021-10-07 15:08:41,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:08:41,503 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 15:08:41,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:41,503 INFO L225 Difference]: With dead ends: 73 [2021-10-07 15:08:41,504 INFO L226 Difference]: Without dead ends: 73 [2021-10-07 15:08:41,504 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 484.6ms TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:08:41,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-07 15:08:41,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-10-07 15:08:41,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 69 states have (on average 2.130434782608696) internal successors, (147), 72 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:41,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 147 transitions. [2021-10-07 15:08:41,507 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 147 transitions. Word has length 10 [2021-10-07 15:08:41,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:41,507 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 147 transitions. [2021-10-07 15:08:41,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:41,508 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 147 transitions. [2021-10-07 15:08:41,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 15:08:41,509 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:41,509 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:41,542 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 15:08:41,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:41,720 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:08:41,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:41,721 INFO L82 PathProgramCache]: Analyzing trace with hash -2132648019, now seen corresponding path program 2 times [2021-10-07 15:08:41,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:41,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574795994] [2021-10-07 15:08:41,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:41,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:42,151 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 15:08:42,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:42,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574795994] [2021-10-07 15:08:42,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574795994] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:42,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286688453] [2021-10-07 15:08:42,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:08:42,152 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:42,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:42,153 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 15:08:42,164 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 15:08:42,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:08:42,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:42,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:08:42,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:42,274 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 75 treesize of output 71 [2021-10-07 15:08:42,413 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:08:42,414 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 15:08:42,442 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 15:08:42,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286688453] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:42,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:08:42,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2021-10-07 15:08:42,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346477572] [2021-10-07 15:08:42,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:08:42,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:42,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:08:42,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:08:42,444 INFO L87 Difference]: Start difference. First operand 73 states and 147 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:42,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:42,503 INFO L93 Difference]: Finished difference Result 87 states and 181 transitions. [2021-10-07 15:08:42,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:08:42,503 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 15:08:42,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:42,504 INFO L225 Difference]: With dead ends: 87 [2021-10-07 15:08:42,504 INFO L226 Difference]: Without dead ends: 87 [2021-10-07 15:08:42,505 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 130.8ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:08:42,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-07 15:08:42,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-10-07 15:08:42,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 83 states have (on average 2.180722891566265) internal successors, (181), 86 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:42,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 181 transitions. [2021-10-07 15:08:42,509 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 181 transitions. Word has length 10 [2021-10-07 15:08:42,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:42,509 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 181 transitions. [2021-10-07 15:08:42,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:42,509 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 181 transitions. [2021-10-07 15:08:42,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 15:08:42,510 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:42,510 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:42,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:42,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-07 15:08:42,725 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:08:42,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:42,726 INFO L82 PathProgramCache]: Analyzing trace with hash -2132648043, now seen corresponding path program 1 times [2021-10-07 15:08:42,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:42,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247967857] [2021-10-07 15:08:42,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:42,727 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:42,965 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 15:08:42,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:42,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247967857] [2021-10-07 15:08:42,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247967857] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:42,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950051877] [2021-10-07 15:08:42,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:42,966 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:42,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:42,967 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 15:08:42,970 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 15:08:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:43,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-07 15:08:43,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:43,111 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 47 treesize of output 45 [2021-10-07 15:08:43,193 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 27 treesize of output 23 [2021-10-07 15:08:43,274 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:08:43,274 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 15:08:43,432 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:08:43,433 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 15:08:43,510 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 15:08:43,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950051877] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:43,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:43,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:08:43,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907262877] [2021-10-07 15:08:43,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:08:43,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:43,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:08:43,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:08:43,512 INFO L87 Difference]: Start difference. First operand 87 states and 181 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:43,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:43,831 INFO L93 Difference]: Finished difference Result 87 states and 179 transitions. [2021-10-07 15:08:43,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:08:43,832 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 15:08:43,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:43,833 INFO L225 Difference]: With dead ends: 87 [2021-10-07 15:08:43,833 INFO L226 Difference]: Without dead ends: 87 [2021-10-07 15:08:43,833 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 362.0ms TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:08:43,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-07 15:08:43,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 82. [2021-10-07 15:08:43,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 78 states have (on average 2.2051282051282053) internal successors, (172), 81 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:43,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 172 transitions. [2021-10-07 15:08:43,837 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 172 transitions. Word has length 10 [2021-10-07 15:08:43,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:43,838 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 172 transitions. [2021-10-07 15:08:43,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:43,838 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 172 transitions. [2021-10-07 15:08:43,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 15:08:43,839 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:43,839 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:43,876 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 15:08:44,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:44,049 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:08:44,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:44,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1673010975, now seen corresponding path program 2 times [2021-10-07 15:08:44,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:44,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369760080] [2021-10-07 15:08:44,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:44,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:44,314 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 15:08:44,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:44,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369760080] [2021-10-07 15:08:44,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369760080] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:44,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048993715] [2021-10-07 15:08:44,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:08:44,315 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:44,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:44,316 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 15:08:44,334 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 15:08:44,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:08:44,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:44,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:08:44,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:44,471 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 47 treesize of output 45 [2021-10-07 15:08:44,627 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:08:44,627 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 15:08:44,693 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 15:08:44,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048993715] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:44,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:08:44,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2021-10-07 15:08:44,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341426518] [2021-10-07 15:08:44,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:08:44,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:44,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:08:44,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:08:44,695 INFO L87 Difference]: Start difference. First operand 82 states and 172 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:44,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:44,763 INFO L93 Difference]: Finished difference Result 86 states and 179 transitions. [2021-10-07 15:08:44,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:08:44,764 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 15:08:44,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:44,765 INFO L225 Difference]: With dead ends: 86 [2021-10-07 15:08:44,765 INFO L226 Difference]: Without dead ends: 86 [2021-10-07 15:08:44,765 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 174.4ms TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:08:44,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-07 15:08:44,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-10-07 15:08:44,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 82 states have (on average 2.182926829268293) internal successors, (179), 85 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:44,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 179 transitions. [2021-10-07 15:08:44,768 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 179 transitions. Word has length 11 [2021-10-07 15:08:44,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:44,769 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 179 transitions. [2021-10-07 15:08:44,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:44,769 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 179 transitions. [2021-10-07 15:08:44,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 15:08:44,770 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:44,770 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:44,805 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 15:08:44,982 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,SelfDestructingSolverStorable15 [2021-10-07 15:08:44,983 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:08:44,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:44,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1673010999, now seen corresponding path program 1 times [2021-10-07 15:08:44,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:44,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364850384] [2021-10-07 15:08:44,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:44,986 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:45,374 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 15:08:45,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:45,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364850384] [2021-10-07 15:08:45,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364850384] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:45,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051951683] [2021-10-07 15:08:45,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:45,376 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:45,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:45,377 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 15:08:45,401 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 15:08:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:45,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 15:08:45,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:45,537 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 47 treesize of output 45 [2021-10-07 15:08:45,702 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:08:45,703 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 15:08:45,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:08:45,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051951683] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:45,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:45,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2021-10-07 15:08:45,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557911223] [2021-10-07 15:08:45,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:08:45,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:45,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:08:45,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:08:45,741 INFO L87 Difference]: Start difference. First operand 86 states and 179 transitions. Second operand has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:45,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:45,994 INFO L93 Difference]: Finished difference Result 110 states and 220 transitions. [2021-10-07 15:08:45,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:08:45,994 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 15:08:45,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:45,995 INFO L225 Difference]: With dead ends: 110 [2021-10-07 15:08:45,995 INFO L226 Difference]: Without dead ends: 90 [2021-10-07 15:08:45,996 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 322.2ms TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:08:45,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-10-07 15:08:45,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 76. [2021-10-07 15:08:45,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 72 states have (on average 2.1805555555555554) internal successors, (157), 75 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:45,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 157 transitions. [2021-10-07 15:08:45,999 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 157 transitions. Word has length 11 [2021-10-07 15:08:45,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:45,999 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 157 transitions. [2021-10-07 15:08:45,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:45,999 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 157 transitions. [2021-10-07 15:08:46,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 15:08:46,000 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:46,000 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:46,039 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 15:08:46,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-07 15:08:46,202 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:08:46,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:46,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1679398270, now seen corresponding path program 2 times [2021-10-07 15:08:46,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:46,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761108263] [2021-10-07 15:08:46,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:46,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:46,437 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 15:08:46,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:46,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761108263] [2021-10-07 15:08:46,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761108263] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:46,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712933950] [2021-10-07 15:08:46,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:08:46,438 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:46,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:46,439 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 15:08:46,447 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 15:08:46,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:08:46,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:46,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:08:46,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:46,698 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 15:08:46,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712933950] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:46,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:08:46,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2021-10-07 15:08:46,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10077186] [2021-10-07 15:08:46,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:08:46,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:46,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:08:46,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:08:46,700 INFO L87 Difference]: Start difference. First operand 76 states and 157 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:46,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:46,739 INFO L93 Difference]: Finished difference Result 95 states and 196 transitions. [2021-10-07 15:08:46,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:08:46,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 15:08:46,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:46,740 INFO L225 Difference]: With dead ends: 95 [2021-10-07 15:08:46,741 INFO L226 Difference]: Without dead ends: 95 [2021-10-07 15:08:46,741 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 77.4ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:08:46,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-07 15:08:46,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2021-10-07 15:08:46,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 86 states have (on average 2.197674418604651) internal successors, (189), 89 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:46,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 189 transitions. [2021-10-07 15:08:46,751 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 189 transitions. Word has length 11 [2021-10-07 15:08:46,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:46,751 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 189 transitions. [2021-10-07 15:08:46,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:46,752 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 189 transitions. [2021-10-07 15:08:46,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 15:08:46,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:46,752 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:46,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-10-07 15:08:46,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-07 15:08:46,953 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:08:46,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:46,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1673934520, now seen corresponding path program 3 times [2021-10-07 15:08:46,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:46,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516227249] [2021-10-07 15:08:46,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:46,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:47,214 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 15:08:47,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:47,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516227249] [2021-10-07 15:08:47,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516227249] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:47,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851445457] [2021-10-07 15:08:47,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:08:47,215 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:47,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:47,216 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 15:08:47,239 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 15:08:47,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-07 15:08:47,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:47,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:08:47,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:47,388 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 238 treesize of output 222 [2021-10-07 15:08:47,526 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:08:47,527 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 15:08:47,554 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 15:08:47,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851445457] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:47,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:08:47,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2021-10-07 15:08:47,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531169941] [2021-10-07 15:08:47,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:08:47,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:47,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:08:47,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:08:47,557 INFO L87 Difference]: Start difference. First operand 90 states and 189 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:47,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:47,609 INFO L93 Difference]: Finished difference Result 90 states and 183 transitions. [2021-10-07 15:08:47,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:08:47,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 15:08:47,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:47,610 INFO L225 Difference]: With dead ends: 90 [2021-10-07 15:08:47,611 INFO L226 Difference]: Without dead ends: 90 [2021-10-07 15:08:47,611 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 130.3ms TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:08:47,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-10-07 15:08:47,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 76. [2021-10-07 15:08:47,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 72 states have (on average 2.0972222222222223) internal successors, (151), 75 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:47,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 151 transitions. [2021-10-07 15:08:47,614 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 151 transitions. Word has length 11 [2021-10-07 15:08:47,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:47,615 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 151 transitions. [2021-10-07 15:08:47,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:47,615 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 151 transitions. [2021-10-07 15:08:47,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 15:08:47,616 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:47,616 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:47,653 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 15:08:47,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:47,825 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:08:47,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:47,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1856954354, now seen corresponding path program 1 times [2021-10-07 15:08:47,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:47,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785907410] [2021-10-07 15:08:47,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:47,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:47,940 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 15:08:47,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:47,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785907410] [2021-10-07 15:08:47,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785907410] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:47,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458250820] [2021-10-07 15:08:47,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:47,942 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:47,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:47,945 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 15:08:47,949 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 15:08:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:48,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 15:08:48,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:48,245 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 15:08:48,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458250820] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:48,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:48,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:08:48,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343112433] [2021-10-07 15:08:48,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:08:48,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:48,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:08:48,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:08:48,249 INFO L87 Difference]: Start difference. First operand 76 states and 151 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:48,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:48,483 INFO L93 Difference]: Finished difference Result 72 states and 143 transitions. [2021-10-07 15:08:48,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:08:48,484 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 15:08:48,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:48,484 INFO L225 Difference]: With dead ends: 72 [2021-10-07 15:08:48,484 INFO L226 Difference]: Without dead ends: 51 [2021-10-07 15:08:48,485 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 258.8ms TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:08:48,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-07 15:08:48,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-07 15:08:48,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 49 states have (on average 2.204081632653061) internal successors, (108), 50 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:48,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 108 transitions. [2021-10-07 15:08:48,487 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 108 transitions. Word has length 11 [2021-10-07 15:08:48,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:48,487 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 108 transitions. [2021-10-07 15:08:48,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:48,488 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 108 transitions. [2021-10-07 15:08:48,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 15:08:48,488 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:48,488 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:48,520 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 15:08:48,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:48,702 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:08:48,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:48,703 INFO L82 PathProgramCache]: Analyzing trace with hash -521737029, now seen corresponding path program 2 times [2021-10-07 15:08:48,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:48,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265618442] [2021-10-07 15:08:48,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:48,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:48,800 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 15:08:48,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:48,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265618442] [2021-10-07 15:08:48,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265618442] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:48,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424570170] [2021-10-07 15:08:48,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:08:48,801 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:48,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:48,802 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 15:08:48,825 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 15:08:48,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:08:48,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:48,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:08:48,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:49,010 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 15:08:49,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424570170] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 15:08:49,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:08:49,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2021-10-07 15:08:49,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890003548] [2021-10-07 15:08:49,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:08:49,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:49,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:08:49,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:08:49,012 INFO L87 Difference]: Start difference. First operand 51 states and 108 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 15:08:49,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:49,043 INFO L93 Difference]: Finished difference Result 93 states and 194 transitions. [2021-10-07 15:08:49,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:08:49,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-07 15:08:49,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:49,045 INFO L225 Difference]: With dead ends: 93 [2021-10-07 15:08:49,045 INFO L226 Difference]: Without dead ends: 89 [2021-10-07 15:08:49,045 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.2ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:08:49,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-07 15:08:49,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 65. [2021-10-07 15:08:49,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 63 states have (on average 2.4603174603174605) internal successors, (155), 64 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:49,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 155 transitions. [2021-10-07 15:08:49,048 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 155 transitions. Word has length 12 [2021-10-07 15:08:49,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:49,050 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 155 transitions. [2021-10-07 15:08:49,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 15:08:49,050 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 155 transitions. [2021-10-07 15:08:49,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:08:49,051 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:49,051 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:49,091 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 15:08:49,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:49,264 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:08:49,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:49,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1006005993, now seen corresponding path program 1 times [2021-10-07 15:08:49,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:49,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761236264] [2021-10-07 15:08:49,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:49,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:49,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:49,518 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:49,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:49,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761236264] [2021-10-07 15:08:49,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761236264] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:49,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022838538] [2021-10-07 15:08:49,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:49,519 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:49,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:49,521 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 15:08:49,547 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 15:08:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:49,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-07 15:08:49,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:49,734 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 47 treesize of output 45 [2021-10-07 15:08:49,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 15:08:49,883 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 15:08:49,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 15:08:50,102 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:50,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022838538] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:50,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:50,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2021-10-07 15:08:50,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910231544] [2021-10-07 15:08:50,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 15:08:50,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:50,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 15:08:50,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:08:50,105 INFO L87 Difference]: Start difference. First operand 65 states and 155 transitions. Second operand has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 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 15:08:50,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:50,456 INFO L93 Difference]: Finished difference Result 114 states and 260 transitions. [2021-10-07 15:08:50,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:08:50,457 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 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 15:08:50,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:50,458 INFO L225 Difference]: With dead ends: 114 [2021-10-07 15:08:50,458 INFO L226 Difference]: Without dead ends: 114 [2021-10-07 15:08:50,459 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 412.9ms TimeCoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:08:50,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-07 15:08:50,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 104. [2021-10-07 15:08:50,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 102 states have (on average 2.392156862745098) internal successors, (244), 103 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:50,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 244 transitions. [2021-10-07 15:08:50,463 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 244 transitions. Word has length 13 [2021-10-07 15:08:50,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:50,463 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 244 transitions. [2021-10-07 15:08:50,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 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 15:08:50,463 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 244 transitions. [2021-10-07 15:08:50,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:08:50,464 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:50,464 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:50,500 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 15:08:50,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:50,665 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:08:50,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:50,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1006005969, now seen corresponding path program 1 times [2021-10-07 15:08:50,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:50,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239045363] [2021-10-07 15:08:50,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:50,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:50,932 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:50,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:50,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239045363] [2021-10-07 15:08:50,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239045363] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:50,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506531459] [2021-10-07 15:08:50,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:50,935 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:50,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:50,939 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 15:08:50,949 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 15:08:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:51,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-07 15:08:51,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:51,144 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 205 treesize of output 189 [2021-10-07 15:08:51,254 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 13 treesize of output 9 [2021-10-07 15:08:51,304 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 15:08:51,367 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 15:08:51,508 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:51,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506531459] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:51,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:51,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-07 15:08:51,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133555449] [2021-10-07 15:08:51,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:08:51,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:51,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:08:51,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:08:51,510 INFO L87 Difference]: Start difference. First operand 104 states and 244 transitions. Second operand has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:51,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:51,894 INFO L93 Difference]: Finished difference Result 162 states and 343 transitions. [2021-10-07 15:08:51,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 15:08:51,894 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-07 15:08:51,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:51,896 INFO L225 Difference]: With dead ends: 162 [2021-10-07 15:08:51,896 INFO L226 Difference]: Without dead ends: 149 [2021-10-07 15:08:51,897 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 392.0ms TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:08:51,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-10-07 15:08:51,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 103. [2021-10-07 15:08:51,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 101 states have (on average 2.4752475247524752) internal successors, (250), 102 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:51,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 250 transitions. [2021-10-07 15:08:51,902 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 250 transitions. Word has length 13 [2021-10-07 15:08:51,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:51,902 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 250 transitions. [2021-10-07 15:08:51,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:51,902 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 250 transitions. [2021-10-07 15:08:51,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:08:51,903 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:51,903 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:51,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-10-07 15:08:52,114 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,SelfDestructingSolverStorable22 [2021-10-07 15:08:52,115 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:08:52,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:52,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1006021803, now seen corresponding path program 2 times [2021-10-07 15:08:52,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:52,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645130406] [2021-10-07 15:08:52,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:52,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:52,382 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:52,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:52,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645130406] [2021-10-07 15:08:52,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645130406] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:52,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24507314] [2021-10-07 15:08:52,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:08:52,383 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:52,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:52,388 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 15:08:52,407 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 15:08:52,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:08:52,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:52,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-07 15:08:52,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:52,719 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 15:08:52,771 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 17 treesize of output 13 [2021-10-07 15:08:52,828 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 15:08:53,004 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:53,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24507314] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:53,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:53,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2021-10-07 15:08:53,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226404986] [2021-10-07 15:08:53,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 15:08:53,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:53,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 15:08:53,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:08:53,006 INFO L87 Difference]: Start difference. First operand 103 states and 250 transitions. Second operand has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 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 15:08:53,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:53,523 INFO L93 Difference]: Finished difference Result 147 states and 316 transitions. [2021-10-07 15:08:53,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:08:53,524 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 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 15:08:53,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:53,525 INFO L225 Difference]: With dead ends: 147 [2021-10-07 15:08:53,525 INFO L226 Difference]: Without dead ends: 147 [2021-10-07 15:08:53,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 575.6ms TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:08:53,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-10-07 15:08:53,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 101. [2021-10-07 15:08:53,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 99 states have (on average 2.484848484848485) internal successors, (246), 100 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:53,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 246 transitions. [2021-10-07 15:08:53,530 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 246 transitions. Word has length 13 [2021-10-07 15:08:53,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:53,530 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 246 transitions. [2021-10-07 15:08:53,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 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 15:08:53,531 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 246 transitions. [2021-10-07 15:08:53,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:08:53,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:53,532 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:53,566 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 15:08:53,732 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,SelfDestructingSolverStorable23 [2021-10-07 15:08:53,733 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:08:53,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:53,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1006021779, now seen corresponding path program 2 times [2021-10-07 15:08:53,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:53,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510774206] [2021-10-07 15:08:53,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:53,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:54,122 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:54,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:54,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510774206] [2021-10-07 15:08:54,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510774206] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:54,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153323656] [2021-10-07 15:08:54,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:08:54,123 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:54,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:54,124 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 15:08:54,132 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 15:08:54,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:08:54,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:54,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-07 15:08:54,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:54,460 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 15:08:54,538 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 15:08:54,600 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 15:08:54,775 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:54,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153323656] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:54,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:54,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2021-10-07 15:08:54,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311646344] [2021-10-07 15:08:54,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 15:08:54,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:54,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 15:08:54,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:08:54,777 INFO L87 Difference]: Start difference. First operand 101 states and 246 transitions. Second operand has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 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 15:08:55,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:55,624 INFO L93 Difference]: Finished difference Result 167 states and 342 transitions. [2021-10-07 15:08:55,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:08:55,624 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 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 15:08:55,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:55,625 INFO L225 Difference]: With dead ends: 167 [2021-10-07 15:08:55,626 INFO L226 Difference]: Without dead ends: 157 [2021-10-07 15:08:55,626 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 847.8ms TimeCoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:08:55,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-10-07 15:08:55,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 123. [2021-10-07 15:08:55,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 119 states have (on average 2.369747899159664) internal successors, (282), 122 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:55,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 282 transitions. [2021-10-07 15:08:55,633 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 282 transitions. Word has length 13 [2021-10-07 15:08:55,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:55,633 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 282 transitions. [2021-10-07 15:08:55,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 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 15:08:55,633 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 282 transitions. [2021-10-07 15:08:55,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:08:55,634 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:55,634 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:55,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-07 15:08:55,847 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,SelfDestructingSolverStorable24 [2021-10-07 15:08:55,848 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:08:55,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:55,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1006021772, now seen corresponding path program 3 times [2021-10-07 15:08:55,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:55,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243832344] [2021-10-07 15:08:55,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:55,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:56,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:56,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:56,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243832344] [2021-10-07 15:08:56,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243832344] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:56,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923038171] [2021-10-07 15:08:56,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:08:56,273 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:56,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:56,274 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 15:08:56,299 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 15:08:56,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:08:56,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:56,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-07 15:08:56,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:56,645 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 15:08:56,695 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 15:08:56,748 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 15:08:56,936 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:56,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923038171] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:56,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:56,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-07 15:08:56,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445033326] [2021-10-07 15:08:56,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:08:56,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:56,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:08:56,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:08:56,938 INFO L87 Difference]: Start difference. First operand 123 states and 282 transitions. Second operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 15:08:57,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:57,946 INFO L93 Difference]: Finished difference Result 165 states and 331 transitions. [2021-10-07 15:08:57,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:08:57,946 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 15:08:57,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:57,949 INFO L225 Difference]: With dead ends: 165 [2021-10-07 15:08:57,949 INFO L226 Difference]: Without dead ends: 165 [2021-10-07 15:08:57,950 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 959.9ms TimeCoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:08:57,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-07 15:08:57,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 123. [2021-10-07 15:08:57,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 119 states have (on average 2.302521008403361) internal successors, (274), 122 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:57,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 274 transitions. [2021-10-07 15:08:57,955 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 274 transitions. Word has length 13 [2021-10-07 15:08:57,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:57,956 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 274 transitions. [2021-10-07 15:08:57,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 15:08:57,956 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 274 transitions. [2021-10-07 15:08:57,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:08:57,957 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:57,957 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:57,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-10-07 15:08:58,167 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,SelfDestructingSolverStorable25 [2021-10-07 15:08:58,168 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:08:58,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:58,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1006021748, now seen corresponding path program 1 times [2021-10-07 15:08:58,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:58,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312341909] [2021-10-07 15:08:58,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:58,170 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:58,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:58,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312341909] [2021-10-07 15:08:58,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312341909] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:58,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110312507] [2021-10-07 15:08:58,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:58,613 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:58,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:58,614 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 15:08:58,615 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 15:08:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:58,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-07 15:08:58,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:58,895 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 47 treesize of output 45 [2021-10-07 15:08:59,028 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 15:08:59,087 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 15:08:59,143 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 15:08:59,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:59,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110312507] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:59,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:59,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2021-10-07 15:08:59,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648253389] [2021-10-07 15:08:59,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 15:08:59,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:59,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 15:08:59,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:08:59,349 INFO L87 Difference]: Start difference. First operand 123 states and 274 transitions. Second operand has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 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 15:09:00,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:00,019 INFO L93 Difference]: Finished difference Result 135 states and 289 transitions. [2021-10-07 15:09:00,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:09:00,020 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 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 15:09:00,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:00,021 INFO L225 Difference]: With dead ends: 135 [2021-10-07 15:09:00,021 INFO L226 Difference]: Without dead ends: 131 [2021-10-07 15:09:00,022 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 741.1ms TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:09:00,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-07 15:09:00,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 119. [2021-10-07 15:09:00,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 115 states have (on average 2.3130434782608695) internal successors, (266), 118 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:00,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 266 transitions. [2021-10-07 15:09:00,027 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 266 transitions. Word has length 13 [2021-10-07 15:09:00,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:00,027 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 266 transitions. [2021-10-07 15:09:00,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 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 15:09:00,028 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 266 transitions. [2021-10-07 15:09:00,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:09:00,028 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:00,029 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:00,066 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 15:09:00,243 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,SelfDestructingSolverStorable26 [2021-10-07 15:09:00,244 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:09:00,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:00,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1006005032, now seen corresponding path program 4 times [2021-10-07 15:09:00,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:00,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128508129] [2021-10-07 15:09:00,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:00,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:00,808 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:00,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:00,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128508129] [2021-10-07 15:09:00,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128508129] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:00,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438794337] [2021-10-07 15:09:00,809 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:09:00,809 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:00,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:00,812 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 15:09:00,831 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 15:09:01,098 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:09:01,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:01,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-07 15:09:01,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:01,116 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 47 treesize of output 45 [2021-10-07 15:09:01,236 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 13 treesize of output 9 [2021-10-07 15:09:01,286 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 15:09:01,356 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 15:09:01,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:01,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438794337] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:01,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:01,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-07 15:09:01,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585138409] [2021-10-07 15:09:01,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:09:01,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:01,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:09:01,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:09:01,548 INFO L87 Difference]: Start difference. First operand 119 states and 266 transitions. Second operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 15:09:02,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:02,309 INFO L93 Difference]: Finished difference Result 139 states and 303 transitions. [2021-10-07 15:09:02,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 15:09:02,309 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 15:09:02,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:02,311 INFO L225 Difference]: With dead ends: 139 [2021-10-07 15:09:02,311 INFO L226 Difference]: Without dead ends: 139 [2021-10-07 15:09:02,311 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 872.0ms TimeCoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:09:02,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-10-07 15:09:02,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 128. [2021-10-07 15:09:02,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 124 states have (on average 2.2983870967741935) internal successors, (285), 127 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:02,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 285 transitions. [2021-10-07 15:09:02,317 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 285 transitions. Word has length 13 [2021-10-07 15:09:02,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:02,317 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 285 transitions. [2021-10-07 15:09:02,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 15:09:02,317 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 285 transitions. [2021-10-07 15:09:02,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:09:02,318 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:02,318 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:02,352 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 15:09:02,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-07 15:09:02,534 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:09:02,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:02,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1006005008, now seen corresponding path program 2 times [2021-10-07 15:09:02,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:02,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988205949] [2021-10-07 15:09:02,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:02,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:02,881 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:02,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:02,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988205949] [2021-10-07 15:09:02,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988205949] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:02,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505637657] [2021-10-07 15:09:02,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:09:02,882 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:02,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:02,884 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 15:09:02,885 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 15:09:03,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:09:03,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:03,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-07 15:09:03,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:03,241 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 15:09:03,305 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 15:09:03,361 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 15:09:03,418 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 15:09:03,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:03,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505637657] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:03,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:03,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2021-10-07 15:09:03,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317828581] [2021-10-07 15:09:03,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 15:09:03,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:03,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 15:09:03,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:09:03,702 INFO L87 Difference]: Start difference. First operand 128 states and 285 transitions. Second operand has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 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 15:09:04,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:04,245 INFO L93 Difference]: Finished difference Result 129 states and 284 transitions. [2021-10-07 15:09:04,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:09:04,249 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 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 15:09:04,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:04,252 INFO L225 Difference]: With dead ends: 129 [2021-10-07 15:09:04,253 INFO L226 Difference]: Without dead ends: 129 [2021-10-07 15:09:04,254 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 617.0ms TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:09:04,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-07 15:09:04,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 126. [2021-10-07 15:09:04,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 122 states have (on average 2.2950819672131146) internal successors, (280), 125 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:04,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 280 transitions. [2021-10-07 15:09:04,259 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 280 transitions. Word has length 13 [2021-10-07 15:09:04,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:04,260 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 280 transitions. [2021-10-07 15:09:04,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 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 15:09:04,260 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 280 transitions. [2021-10-07 15:09:04,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:09:04,260 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:04,261 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:04,297 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 15:09:04,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-07 15:09:04,476 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:09:04,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:04,477 INFO L82 PathProgramCache]: Analyzing trace with hash -2135260409, now seen corresponding path program 3 times [2021-10-07 15:09:04,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:04,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281493708] [2021-10-07 15:09:04,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:04,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:04,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:04,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:04,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281493708] [2021-10-07 15:09:04,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281493708] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:04,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876986073] [2021-10-07 15:09:04,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:09:04,742 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:04,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:04,746 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 15:09:04,767 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 15:09:05,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:09:05,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:05,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-07 15:09:05,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:05,127 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 22 treesize of output 18 [2021-10-07 15:09:05,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:09:05,188 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 23 treesize of output 22 [2021-10-07 15:09:05,266 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 15:09:05,267 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 15:09:05,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:09:05,497 INFO L354 Elim1Store]: treesize reduction 63, result has 24.1 percent of original size [2021-10-07 15:09:05,498 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 15:09:05,660 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:05,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876986073] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:05,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:05,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-07 15:09:05,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063365484] [2021-10-07 15:09:05,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:09:05,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:05,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:09:05,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:09:05,662 INFO L87 Difference]: Start difference. First operand 126 states and 280 transitions. Second operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 15:09:06,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:06,070 INFO L93 Difference]: Finished difference Result 150 states and 317 transitions. [2021-10-07 15:09:06,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:09:06,071 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 15:09:06,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:06,072 INFO L225 Difference]: With dead ends: 150 [2021-10-07 15:09:06,072 INFO L226 Difference]: Without dead ends: 150 [2021-10-07 15:09:06,073 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 430.5ms TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:09:06,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-07 15:09:06,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 140. [2021-10-07 15:09:06,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 136 states have (on average 2.2279411764705883) internal successors, (303), 139 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:06,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 303 transitions. [2021-10-07 15:09:06,078 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 303 transitions. Word has length 13 [2021-10-07 15:09:06,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:06,079 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 303 transitions. [2021-10-07 15:09:06,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 15:09:06,079 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 303 transitions. [2021-10-07 15:09:06,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:09:06,080 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:06,080 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:06,116 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 15:09:06,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:06,294 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:09:06,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:06,295 INFO L82 PathProgramCache]: Analyzing trace with hash -2135260433, now seen corresponding path program 3 times [2021-10-07 15:09:06,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:06,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067724752] [2021-10-07 15:09:06,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:06,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:06,580 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:06,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:06,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067724752] [2021-10-07 15:09:06,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067724752] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:06,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955800698] [2021-10-07 15:09:06,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:09:06,581 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:06,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:06,582 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 15:09:06,597 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 15:09:06,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:09:06,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:06,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-07 15:09:06,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:07,005 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 15:09:07,056 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 15:09:07,222 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:09:07,223 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 15:09:07,362 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:07,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955800698] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:07,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:07,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-07 15:09:07,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278231494] [2021-10-07 15:09:07,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:09:07,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:07,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:09:07,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:09:07,365 INFO L87 Difference]: Start difference. First operand 140 states and 303 transitions. Second operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 15:09:07,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:07,906 INFO L93 Difference]: Finished difference Result 150 states and 314 transitions. [2021-10-07 15:09:07,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:09:07,906 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 15:09:07,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:07,908 INFO L225 Difference]: With dead ends: 150 [2021-10-07 15:09:07,908 INFO L226 Difference]: Without dead ends: 136 [2021-10-07 15:09:07,908 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 577.2ms TimeCoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:09:07,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-07 15:09:07,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 126. [2021-10-07 15:09:07,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 122 states have (on average 2.2868852459016393) internal successors, (279), 125 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:07,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 279 transitions. [2021-10-07 15:09:07,914 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 279 transitions. Word has length 13 [2021-10-07 15:09:07,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:07,914 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 279 transitions. [2021-10-07 15:09:07,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 15:09:07,914 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 279 transitions. [2021-10-07 15:09:07,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:09:07,915 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:07,915 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:07,942 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 15:09:08,125 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,SelfDestructingSolverStorable30 [2021-10-07 15:09:08,126 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:09:08,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:08,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1961718202, now seen corresponding path program 3 times [2021-10-07 15:09:08,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:08,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876355176] [2021-10-07 15:09:08,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:08,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:08,738 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:08,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:08,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876355176] [2021-10-07 15:09:08,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876355176] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:08,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581240337] [2021-10-07 15:09:08,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:09:08,739 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:08,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:08,740 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 15:09:08,741 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 15:09:09,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:09:09,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:09,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-07 15:09:09,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:09,130 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 150 treesize of output 142 [2021-10-07 15:09:09,247 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 15:09:09,317 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 15:09:09,467 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:09,467 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 15:09:09,751 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:09,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581240337] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:09,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:09,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-07 15:09:09,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561075044] [2021-10-07 15:09:09,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:09:09,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:09,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:09:09,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:09:09,754 INFO L87 Difference]: Start difference. First operand 126 states and 279 transitions. Second operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 15:09:10,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:10,548 INFO L93 Difference]: Finished difference Result 156 states and 310 transitions. [2021-10-07 15:09:10,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:09:10,549 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 15:09:10,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:10,550 INFO L225 Difference]: With dead ends: 156 [2021-10-07 15:09:10,550 INFO L226 Difference]: Without dead ends: 156 [2021-10-07 15:09:10,551 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 877.7ms TimeCoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:09:10,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-07 15:09:10,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 134. [2021-10-07 15:09:10,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 130 states have (on average 2.2) internal successors, (286), 133 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:10,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 286 transitions. [2021-10-07 15:09:10,563 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 286 transitions. Word has length 13 [2021-10-07 15:09:10,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:10,563 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 286 transitions. [2021-10-07 15:09:10,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 15:09:10,563 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 286 transitions. [2021-10-07 15:09:10,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:09:10,566 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:10,566 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:10,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-07 15:09:10,779 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,SelfDestructingSolverStorable31 [2021-10-07 15:09:10,779 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:09:10,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:10,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1961701462, now seen corresponding path program 4 times [2021-10-07 15:09:10,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:10,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881401317] [2021-10-07 15:09:10,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:10,781 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:11,240 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:11,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:11,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881401317] [2021-10-07 15:09:11,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881401317] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:11,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674644800] [2021-10-07 15:09:11,241 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:09:11,241 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:11,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:11,242 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 15:09:11,265 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 15:09:11,608 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:09:11,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:11,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-07 15:09:11,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:11,624 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 275 treesize of output 259 [2021-10-07 15:09:11,761 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 13 treesize of output 9 [2021-10-07 15:09:11,841 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 15:09:11,986 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:11,986 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 15:09:12,197 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:12,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674644800] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:12,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:12,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-07 15:09:12,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800422754] [2021-10-07 15:09:12,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:09:12,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:12,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:09:12,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:09:12,199 INFO L87 Difference]: Start difference. First operand 134 states and 286 transitions. Second operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 15:09:13,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:13,109 INFO L93 Difference]: Finished difference Result 158 states and 314 transitions. [2021-10-07 15:09:13,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 15:09:13,109 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 15:09:13,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:13,110 INFO L225 Difference]: With dead ends: 158 [2021-10-07 15:09:13,111 INFO L226 Difference]: Without dead ends: 144 [2021-10-07 15:09:13,111 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1006.4ms TimeCoverageRelationStatistics Valid=140, Invalid=616, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:09:13,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-07 15:09:13,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 134. [2021-10-07 15:09:13,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 130 states have (on average 2.169230769230769) internal successors, (282), 133 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:13,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 282 transitions. [2021-10-07 15:09:13,117 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 282 transitions. Word has length 13 [2021-10-07 15:09:13,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:13,117 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 282 transitions. [2021-10-07 15:09:13,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 15:09:13,117 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 282 transitions. [2021-10-07 15:09:13,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:09:13,118 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:13,118 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:13,147 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 15:09:13,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:13,333 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:09:13,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:13,333 INFO L82 PathProgramCache]: Analyzing trace with hash 2131077736, now seen corresponding path program 5 times [2021-10-07 15:09:13,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:13,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479486386] [2021-10-07 15:09:13,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:13,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:13,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:13,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479486386] [2021-10-07 15:09:13,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479486386] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:13,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501322589] [2021-10-07 15:09:13,761 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:09:13,761 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:13,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:13,762 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 15:09:13,781 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 15:09:14,152 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:09:14,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:14,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-07 15:09:14,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:14,170 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 47 treesize of output 45 [2021-10-07 15:09:14,286 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 29 treesize of output 25 [2021-10-07 15:09:14,364 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:14,364 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 15:09:14,644 INFO L354 Elim1Store]: treesize reduction 88, result has 20.7 percent of original size [2021-10-07 15:09:14,645 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 15:09:14,817 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:14,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501322589] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:14,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:14,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-07 15:09:14,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091870871] [2021-10-07 15:09:14,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:09:14,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:14,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:09:14,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:09:14,819 INFO L87 Difference]: Start difference. First operand 134 states and 282 transitions. Second operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 15:09:15,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:15,601 INFO L93 Difference]: Finished difference Result 138 states and 290 transitions. [2021-10-07 15:09:15,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:09:15,601 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 15:09:15,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:15,602 INFO L225 Difference]: With dead ends: 138 [2021-10-07 15:09:15,603 INFO L226 Difference]: Without dead ends: 138 [2021-10-07 15:09:15,603 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 884.8ms TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:09:15,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-07 15:09:15,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-10-07 15:09:15,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 134 states have (on average 2.1641791044776117) internal successors, (290), 137 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:15,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 290 transitions. [2021-10-07 15:09:15,608 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 290 transitions. Word has length 13 [2021-10-07 15:09:15,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:15,608 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 290 transitions. [2021-10-07 15:09:15,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 15:09:15,609 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 290 transitions. [2021-10-07 15:09:15,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:09:15,610 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:15,610 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:15,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-07 15:09:15,821 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,SelfDestructingSolverStorable33 [2021-10-07 15:09:15,822 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:09:15,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:15,823 INFO L82 PathProgramCache]: Analyzing trace with hash 2131077712, now seen corresponding path program 5 times [2021-10-07 15:09:15,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:15,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473636545] [2021-10-07 15:09:15,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:15,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:16,266 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:16,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:16,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473636545] [2021-10-07 15:09:16,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473636545] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:16,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853193787] [2021-10-07 15:09:16,268 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:09:16,268 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:16,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:16,269 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 15:09:16,270 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 15:09:16,710 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:09:16,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:16,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-07 15:09:16,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:16,729 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 92 treesize of output 88 [2021-10-07 15:09:16,871 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 13 treesize of output 9 [2021-10-07 15:09:16,921 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 15:09:17,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:09:17,145 INFO L354 Elim1Store]: treesize reduction 75, result has 24.2 percent of original size [2021-10-07 15:09:17,146 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 15:09:17,287 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:17,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853193787] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:17,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:17,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-07 15:09:17,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714368797] [2021-10-07 15:09:17,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:09:17,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:17,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:09:17,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:09:17,289 INFO L87 Difference]: Start difference. First operand 138 states and 290 transitions. Second operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 15:09:18,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:18,320 INFO L93 Difference]: Finished difference Result 160 states and 325 transitions. [2021-10-07 15:09:18,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 15:09:18,320 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 15:09:18,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:18,322 INFO L225 Difference]: With dead ends: 160 [2021-10-07 15:09:18,322 INFO L226 Difference]: Without dead ends: 150 [2021-10-07 15:09:18,323 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1121.7ms TimeCoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:09:18,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-07 15:09:18,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 133. [2021-10-07 15:09:18,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 129 states have (on average 2.2093023255813953) internal successors, (285), 132 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:18,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 285 transitions. [2021-10-07 15:09:18,328 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 285 transitions. Word has length 13 [2021-10-07 15:09:18,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:18,328 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 285 transitions. [2021-10-07 15:09:18,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 15:09:18,328 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 285 transitions. [2021-10-07 15:09:18,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:09:18,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:18,329 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:18,358 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 15:09:18,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:18,543 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:09:18,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:18,543 INFO L82 PathProgramCache]: Analyzing trace with hash -45366186, now seen corresponding path program 4 times [2021-10-07 15:09:18,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:18,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585590729] [2021-10-07 15:09:18,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:18,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:19,028 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:19,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:19,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585590729] [2021-10-07 15:09:19,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585590729] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:19,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272424402] [2021-10-07 15:09:19,029 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:09:19,029 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:19,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:19,030 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 15:09:19,052 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 15:09:19,503 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:09:19,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:19,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 15:09:19,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:19,646 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:09:19,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272424402] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:19,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:19,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 14 [2021-10-07 15:09:19,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714396763] [2021-10-07 15:09:19,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:09:19,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:19,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:09:19,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:09:19,648 INFO L87 Difference]: Start difference. First operand 133 states and 285 transitions. Second operand has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:20,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:20,053 INFO L93 Difference]: Finished difference Result 227 states and 446 transitions. [2021-10-07 15:09:20,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:09:20,053 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 15:09:20,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:20,055 INFO L225 Difference]: With dead ends: 227 [2021-10-07 15:09:20,055 INFO L226 Difference]: Without dead ends: 227 [2021-10-07 15:09:20,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 384.1ms TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:09:20,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-10-07 15:09:20,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 150. [2021-10-07 15:09:20,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 146 states have (on average 2.2054794520547945) internal successors, (322), 149 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:20,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 322 transitions. [2021-10-07 15:09:20,062 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 322 transitions. Word has length 14 [2021-10-07 15:09:20,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:20,062 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 322 transitions. [2021-10-07 15:09:20,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:20,063 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 322 transitions. [2021-10-07 15:09:20,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:09:20,063 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:20,063 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:20,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-10-07 15:09:20,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:20,277 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:09:20,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:20,278 INFO L82 PathProgramCache]: Analyzing trace with hash -45366210, now seen corresponding path program 4 times [2021-10-07 15:09:20,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:20,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324672926] [2021-10-07 15:09:20,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:20,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:20,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:20,586 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:20,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:20,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324672926] [2021-10-07 15:09:20,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324672926] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:20,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818173300] [2021-10-07 15:09:20,587 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:09:20,587 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:20,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:20,588 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 15:09:20,604 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 15:09:20,980 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:09:20,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:20,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 15:09:20,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:21,100 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:09:21,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818173300] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:21,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:21,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 14 [2021-10-07 15:09:21,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592156556] [2021-10-07 15:09:21,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:09:21,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:21,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:09:21,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:09:21,103 INFO L87 Difference]: Start difference. First operand 150 states and 322 transitions. Second operand has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:21,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:21,425 INFO L93 Difference]: Finished difference Result 227 states and 438 transitions. [2021-10-07 15:09:21,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:09:21,428 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 15:09:21,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:21,430 INFO L225 Difference]: With dead ends: 227 [2021-10-07 15:09:21,430 INFO L226 Difference]: Without dead ends: 201 [2021-10-07 15:09:21,430 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 322.8ms TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:09:21,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-10-07 15:09:21,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 133. [2021-10-07 15:09:21,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 129 states have (on average 2.1705426356589146) internal successors, (280), 132 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:21,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 280 transitions. [2021-10-07 15:09:21,439 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 280 transitions. Word has length 14 [2021-10-07 15:09:21,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:21,440 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 280 transitions. [2021-10-07 15:09:21,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:21,440 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 280 transitions. [2021-10-07 15:09:21,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:09:21,445 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:21,445 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:21,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-07 15:09:21,658 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,SelfDestructingSolverStorable36 [2021-10-07 15:09:21,659 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:09:21,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:21,660 INFO L82 PathProgramCache]: Analyzing trace with hash -45350376, now seen corresponding path program 5 times [2021-10-07 15:09:21,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:21,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331062261] [2021-10-07 15:09:21,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:21,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:22,448 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:22,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:22,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331062261] [2021-10-07 15:09:22,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331062261] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:22,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145858505] [2021-10-07 15:09:22,449 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:09:22,449 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:22,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:22,451 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 15:09:22,452 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 15:09:22,953 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:09:22,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:22,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-07 15:09:22,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:23,189 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:09:23,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145858505] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:23,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:23,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 15 [2021-10-07 15:09:23,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144095066] [2021-10-07 15:09:23,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 15:09:23,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:23,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 15:09:23,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:09:23,191 INFO L87 Difference]: Start difference. First operand 133 states and 280 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 15:09:24,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:24,064 INFO L93 Difference]: Finished difference Result 206 states and 437 transitions. [2021-10-07 15:09:24,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:09:24,064 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 15:09:24,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:24,065 INFO L225 Difference]: With dead ends: 206 [2021-10-07 15:09:24,065 INFO L226 Difference]: Without dead ends: 206 [2021-10-07 15:09:24,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 866.9ms TimeCoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:09:24,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-10-07 15:09:24,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 175. [2021-10-07 15:09:24,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 171 states have (on average 2.257309941520468) internal successors, (386), 174 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:24,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 386 transitions. [2021-10-07 15:09:24,072 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 386 transitions. Word has length 14 [2021-10-07 15:09:24,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:24,073 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 386 transitions. [2021-10-07 15:09:24,073 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 15:09:24,073 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 386 transitions. [2021-10-07 15:09:24,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:09:24,073 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:24,074 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:24,099 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 15:09:24,281 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,SelfDestructingSolverStorable37 [2021-10-07 15:09:24,282 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:09:24,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:24,282 INFO L82 PathProgramCache]: Analyzing trace with hash -45350400, now seen corresponding path program 5 times [2021-10-07 15:09:24,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:24,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660971572] [2021-10-07 15:09:24,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:24,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:24,779 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:24,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:24,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660971572] [2021-10-07 15:09:24,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660971572] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:24,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539279963] [2021-10-07 15:09:24,780 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:09:24,780 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:24,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:24,784 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 15:09:24,802 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 15:09:25,240 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:09:25,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:25,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 15:09:25,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:25,382 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:09:25,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539279963] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:25,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:25,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 14 [2021-10-07 15:09:25,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42425877] [2021-10-07 15:09:25,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:09:25,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:25,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:09:25,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:09:25,384 INFO L87 Difference]: Start difference. First operand 175 states and 386 transitions. Second operand has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:25,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:25,897 INFO L93 Difference]: Finished difference Result 220 states and 451 transitions. [2021-10-07 15:09:25,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:09:25,898 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 15:09:25,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:25,900 INFO L225 Difference]: With dead ends: 220 [2021-10-07 15:09:25,900 INFO L226 Difference]: Without dead ends: 212 [2021-10-07 15:09:25,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 588.5ms TimeCoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:09:25,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-10-07 15:09:25,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 179. [2021-10-07 15:09:25,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 175 states have (on average 2.222857142857143) internal successors, (389), 178 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:25,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 389 transitions. [2021-10-07 15:09:25,908 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 389 transitions. Word has length 14 [2021-10-07 15:09:25,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:25,908 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 389 transitions. [2021-10-07 15:09:25,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:25,909 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 389 transitions. [2021-10-07 15:09:25,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:09:25,909 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:25,909 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:25,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-10-07 15:09:26,109 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,SelfDestructingSolverStorable38 [2021-10-07 15:09:26,110 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:09:26,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:26,111 INFO L82 PathProgramCache]: Analyzing trace with hash -45350431, now seen corresponding path program 6 times [2021-10-07 15:09:26,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:26,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445563339] [2021-10-07 15:09:26,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:26,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:26,609 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:26,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:26,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445563339] [2021-10-07 15:09:26,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445563339] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:26,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851631349] [2021-10-07 15:09:26,610 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:09:26,610 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:26,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:26,634 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 15:09:26,657 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 15:09:27,156 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:09:27,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:27,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-07 15:09:27,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:27,361 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:09:27,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851631349] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:27,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:27,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 14 [2021-10-07 15:09:27,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107925560] [2021-10-07 15:09:27,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:09:27,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:27,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:09:27,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:09:27,363 INFO L87 Difference]: Start difference. First operand 179 states and 389 transitions. Second operand has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:28,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:28,034 INFO L93 Difference]: Finished difference Result 229 states and 499 transitions. [2021-10-07 15:09:28,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:09:28,035 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 15:09:28,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:28,036 INFO L225 Difference]: With dead ends: 229 [2021-10-07 15:09:28,036 INFO L226 Difference]: Without dead ends: 225 [2021-10-07 15:09:28,037 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 674.0ms TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:09:28,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-10-07 15:09:28,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 193. [2021-10-07 15:09:28,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 189 states have (on average 2.259259259259259) internal successors, (427), 192 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:28,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 427 transitions. [2021-10-07 15:09:28,044 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 427 transitions. Word has length 14 [2021-10-07 15:09:28,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:28,044 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 427 transitions. [2021-10-07 15:09:28,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:28,044 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 427 transitions. [2021-10-07 15:09:28,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:09:28,045 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:28,045 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:28,082 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 15:09:28,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-07 15:09:28,261 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:09:28,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:28,261 INFO L82 PathProgramCache]: Analyzing trace with hash -45367147, now seen corresponding path program 6 times [2021-10-07 15:09:28,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:28,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385291251] [2021-10-07 15:09:28,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:28,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:28,730 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:28,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:28,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385291251] [2021-10-07 15:09:28,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385291251] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:28,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845848363] [2021-10-07 15:09:28,731 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:09:28,731 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:28,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:28,732 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 15:09:28,733 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 15:09:29,256 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:09:29,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:29,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 15:09:29,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:29,408 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:09:29,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845848363] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:29,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:29,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 14 [2021-10-07 15:09:29,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343049143] [2021-10-07 15:09:29,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:09:29,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:29,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:09:29,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:09:29,411 INFO L87 Difference]: Start difference. First operand 193 states and 427 transitions. Second operand has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:29,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:29,813 INFO L93 Difference]: Finished difference Result 297 states and 643 transitions. [2021-10-07 15:09:29,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:09:29,814 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 15:09:29,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:29,816 INFO L225 Difference]: With dead ends: 297 [2021-10-07 15:09:29,816 INFO L226 Difference]: Without dead ends: 297 [2021-10-07 15:09:29,816 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 393.6ms TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:09:29,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-10-07 15:09:29,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 219. [2021-10-07 15:09:29,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 215 states have (on average 2.3488372093023258) internal successors, (505), 218 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:29,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 505 transitions. [2021-10-07 15:09:29,825 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 505 transitions. Word has length 14 [2021-10-07 15:09:29,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:29,826 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 505 transitions. [2021-10-07 15:09:29,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:29,826 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 505 transitions. [2021-10-07 15:09:29,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:09:29,827 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:29,827 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:29,864 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 15:09:30,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:30,041 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:09:30,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:30,042 INFO L82 PathProgramCache]: Analyzing trace with hash -45367171, now seen corresponding path program 7 times [2021-10-07 15:09:30,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:30,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171322062] [2021-10-07 15:09:30,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:30,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:30,549 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:30,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:30,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171322062] [2021-10-07 15:09:30,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171322062] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:30,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823039454] [2021-10-07 15:09:30,550 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:09:30,550 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:30,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:30,551 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 15:09:30,558 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 15:09:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:31,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-07 15:09:31,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:31,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:09:31,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823039454] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:31,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:31,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 14 [2021-10-07 15:09:31,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609575327] [2021-10-07 15:09:31,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:09:31,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:31,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:09:31,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:09:31,297 INFO L87 Difference]: Start difference. First operand 219 states and 505 transitions. Second operand has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:31,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:31,756 INFO L93 Difference]: Finished difference Result 271 states and 616 transitions. [2021-10-07 15:09:31,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:09:31,756 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 15:09:31,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:31,758 INFO L225 Difference]: With dead ends: 271 [2021-10-07 15:09:31,758 INFO L226 Difference]: Without dead ends: 271 [2021-10-07 15:09:31,759 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 525.5ms TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:09:31,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-10-07 15:09:31,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 233. [2021-10-07 15:09:31,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 229 states have (on average 2.3449781659388647) internal successors, (537), 232 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:31,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 537 transitions. [2021-10-07 15:09:31,767 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 537 transitions. Word has length 14 [2021-10-07 15:09:31,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:31,767 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 537 transitions. [2021-10-07 15:09:31,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:31,767 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 537 transitions. [2021-10-07 15:09:31,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:09:31,768 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:31,768 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:31,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-10-07 15:09:31,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:31,982 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:09:31,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:31,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1108334708, now seen corresponding path program 6 times [2021-10-07 15:09:31,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:31,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2792501] [2021-10-07 15:09:31,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:31,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:32,335 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:32,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:32,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2792501] [2021-10-07 15:09:32,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2792501] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:32,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743743047] [2021-10-07 15:09:32,336 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:09:32,336 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:32,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:32,337 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 15:09:32,340 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 15:09:32,902 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:09:32,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:32,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-07 15:09:32,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:33,048 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:09:33,048 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 15:09:33,106 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:09:33,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743743047] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:33,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:33,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 15 [2021-10-07 15:09:33,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15775684] [2021-10-07 15:09:33,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 15:09:33,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:33,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 15:09:33,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:09:33,109 INFO L87 Difference]: Start difference. First operand 233 states and 537 transitions. Second operand has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 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 15:09:33,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:33,740 INFO L93 Difference]: Finished difference Result 309 states and 655 transitions. [2021-10-07 15:09:33,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:09:33,741 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 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 15:09:33,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:33,743 INFO L225 Difference]: With dead ends: 309 [2021-10-07 15:09:33,743 INFO L226 Difference]: Without dead ends: 309 [2021-10-07 15:09:33,743 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 609.0ms TimeCoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:09:33,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-10-07 15:09:33,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 243. [2021-10-07 15:09:33,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 239 states have (on average 2.3138075313807533) internal successors, (553), 242 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:33,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 553 transitions. [2021-10-07 15:09:33,752 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 553 transitions. Word has length 14 [2021-10-07 15:09:33,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:33,752 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 553 transitions. [2021-10-07 15:09:33,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 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 15:09:33,752 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 553 transitions. [2021-10-07 15:09:33,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:09:33,753 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:33,753 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:33,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2021-10-07 15:09:33,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:33,969 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:09:33,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:33,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1108334684, now seen corresponding path program 6 times [2021-10-07 15:09:33,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:33,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671869006] [2021-10-07 15:09:33,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:33,971 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:34,597 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:34,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:34,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671869006] [2021-10-07 15:09:34,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671869006] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:34,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286723455] [2021-10-07 15:09:34,598 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:09:34,598 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:34,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:34,599 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 15:09:34,600 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 15:09:35,151 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:09:35,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:35,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-07 15:09:35,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:35,360 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:09:35,360 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 15:09:35,420 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:09:35,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286723455] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:35,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:35,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 17 [2021-10-07 15:09:35,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194868357] [2021-10-07 15:09:35,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 15:09:35,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:35,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 15:09:35,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:09:35,425 INFO L87 Difference]: Start difference. First operand 243 states and 553 transitions. Second operand has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 15:09:36,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:36,225 INFO L93 Difference]: Finished difference Result 309 states and 647 transitions. [2021-10-07 15:09:36,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:09:36,230 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 15:09:36,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:36,232 INFO L225 Difference]: With dead ends: 309 [2021-10-07 15:09:36,232 INFO L226 Difference]: Without dead ends: 281 [2021-10-07 15:09:36,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 885.2ms TimeCoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:09:36,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-10-07 15:09:36,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 233. [2021-10-07 15:09:36,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 229 states have (on average 2.3406113537117905) internal successors, (536), 232 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:36,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 536 transitions. [2021-10-07 15:09:36,241 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 536 transitions. Word has length 14 [2021-10-07 15:09:36,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:36,241 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 536 transitions. [2021-10-07 15:09:36,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 15:09:36,242 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 536 transitions. [2021-10-07 15:09:36,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:09:36,243 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:36,243 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:36,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2021-10-07 15:09:36,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:36,458 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:09:36,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:36,458 INFO L82 PathProgramCache]: Analyzing trace with hash 910346078, now seen corresponding path program 7 times [2021-10-07 15:09:36,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:36,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725930190] [2021-10-07 15:09:36,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:36,460 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:36,878 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:36,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:36,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725930190] [2021-10-07 15:09:36,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725930190] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:36,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415184526] [2021-10-07 15:09:36,879 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:09:36,879 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:36,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:36,880 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 15:09:36,881 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 15:09:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:37,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-07 15:09:37,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:37,449 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 370 treesize of output 362 [2021-10-07 15:09:37,683 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:09:37,684 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 27 treesize of output 26 [2021-10-07 15:09:37,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:09:37,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415184526] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:37,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:37,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 17 [2021-10-07 15:09:37,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344527780] [2021-10-07 15:09:37,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 15:09:37,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:37,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 15:09:37,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:09:37,817 INFO L87 Difference]: Start difference. First operand 233 states and 536 transitions. Second operand has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 15:09:38,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:38,468 INFO L93 Difference]: Finished difference Result 267 states and 587 transitions. [2021-10-07 15:09:38,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:09:38,469 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 15:09:38,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:38,471 INFO L225 Difference]: With dead ends: 267 [2021-10-07 15:09:38,471 INFO L226 Difference]: Without dead ends: 259 [2021-10-07 15:09:38,471 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 717.4ms TimeCoverageRelationStatistics Valid=125, Invalid=745, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:09:38,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-10-07 15:09:38,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 229. [2021-10-07 15:09:38,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 225 states have (on average 2.311111111111111) internal successors, (520), 228 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:38,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 520 transitions. [2021-10-07 15:09:38,479 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 520 transitions. Word has length 14 [2021-10-07 15:09:38,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:38,479 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 520 transitions. [2021-10-07 15:09:38,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 15:09:38,479 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 520 transitions. [2021-10-07 15:09:38,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:09:38,480 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:38,480 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:38,516 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 15:09:38,695 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,SelfDestructingSolverStorable44 [2021-10-07 15:09:38,696 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:09:38,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:38,696 INFO L82 PathProgramCache]: Analyzing trace with hash 910346023, now seen corresponding path program 8 times [2021-10-07 15:09:38,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:38,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905870182] [2021-10-07 15:09:38,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:38,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:39,398 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:39,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:39,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905870182] [2021-10-07 15:09:39,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905870182] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:39,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935566950] [2021-10-07 15:09:39,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:09:39,399 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:39,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:39,400 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 15:09:39,401 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 15:09:39,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:09:39,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:39,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-07 15:09:39,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:39,996 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 275 treesize of output 259 [2021-10-07 15:09:40,228 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:09:40,228 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 15:09:40,379 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:09:40,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935566950] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:40,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:40,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 17 [2021-10-07 15:09:40,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218141518] [2021-10-07 15:09:40,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 15:09:40,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:40,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 15:09:40,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:09:40,381 INFO L87 Difference]: Start difference. First operand 229 states and 520 transitions. Second operand has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 15:09:41,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:41,181 INFO L93 Difference]: Finished difference Result 304 states and 697 transitions. [2021-10-07 15:09:41,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:09:41,181 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 15:09:41,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:41,183 INFO L225 Difference]: With dead ends: 304 [2021-10-07 15:09:41,183 INFO L226 Difference]: Without dead ends: 304 [2021-10-07 15:09:41,184 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 926.4ms TimeCoverageRelationStatistics Valid=150, Invalid=720, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:09:41,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-10-07 15:09:41,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 229. [2021-10-07 15:09:41,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 225 states have (on average 2.311111111111111) internal successors, (520), 228 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:41,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 520 transitions. [2021-10-07 15:09:41,192 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 520 transitions. Word has length 14 [2021-10-07 15:09:41,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:41,192 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 520 transitions. [2021-10-07 15:09:41,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 15:09:41,192 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 520 transitions. [2021-10-07 15:09:41,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:09:41,193 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:41,193 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:41,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2021-10-07 15:09:41,406 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,SelfDestructingSolverStorable45 [2021-10-07 15:09:41,406 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:09:41,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:41,407 INFO L82 PathProgramCache]: Analyzing trace with hash 910329283, now seen corresponding path program 9 times [2021-10-07 15:09:41,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:41,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940268681] [2021-10-07 15:09:41,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:41,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:42,119 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:42,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:42,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940268681] [2021-10-07 15:09:42,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940268681] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:42,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364619819] [2021-10-07 15:09:42,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:09:42,120 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:42,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:42,122 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 15:09:42,141 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 15:09:42,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:09:42,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:42,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-07 15:09:42,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:42,751 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 47 treesize of output 45 [2021-10-07 15:09:42,939 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:09:42,940 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 15:09:43,064 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:09:43,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364619819] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:43,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:43,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 15 [2021-10-07 15:09:43,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410703689] [2021-10-07 15:09:43,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 15:09:43,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:43,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 15:09:43,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:09:43,067 INFO L87 Difference]: Start difference. First operand 229 states and 520 transitions. Second operand has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 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 15:09:43,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:43,760 INFO L93 Difference]: Finished difference Result 302 states and 682 transitions. [2021-10-07 15:09:43,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:09:43,760 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 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 15:09:43,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:43,762 INFO L225 Difference]: With dead ends: 302 [2021-10-07 15:09:43,763 INFO L226 Difference]: Without dead ends: 302 [2021-10-07 15:09:43,763 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 781.0ms TimeCoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:09:43,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-10-07 15:09:43,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 216. [2021-10-07 15:09:43,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 212 states have (on average 2.311320754716981) internal successors, (490), 215 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:43,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 490 transitions. [2021-10-07 15:09:43,771 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 490 transitions. Word has length 14 [2021-10-07 15:09:43,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:43,772 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 490 transitions. [2021-10-07 15:09:43,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 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 15:09:43,772 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 490 transitions. [2021-10-07 15:09:43,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:09:43,773 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:43,773 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:43,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2021-10-07 15:09:43,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:43,988 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:09:43,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:43,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1079705557, now seen corresponding path program 7 times [2021-10-07 15:09:43,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:43,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814007425] [2021-10-07 15:09:43,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:43,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:44,608 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:44,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:44,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814007425] [2021-10-07 15:09:44,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814007425] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:44,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848859775] [2021-10-07 15:09:44,609 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:09:44,609 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:44,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:44,610 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 15:09:44,625 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 15:09:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:45,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-07 15:09:45,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:45,181 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 159 treesize of output 157 [2021-10-07 15:09:45,384 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:09:45,385 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 15:09:45,445 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:09:45,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848859775] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:45,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:45,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 17 [2021-10-07 15:09:45,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513591513] [2021-10-07 15:09:45,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 15:09:45,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:45,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 15:09:45,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:09:45,448 INFO L87 Difference]: Start difference. First operand 216 states and 490 transitions. Second operand has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 15:09:46,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:46,011 INFO L93 Difference]: Finished difference Result 300 states and 676 transitions. [2021-10-07 15:09:46,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:09:46,012 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 15:09:46,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:46,014 INFO L225 Difference]: With dead ends: 300 [2021-10-07 15:09:46,014 INFO L226 Difference]: Without dead ends: 300 [2021-10-07 15:09:46,015 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 650.1ms TimeCoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:09:46,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-10-07 15:09:46,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 216. [2021-10-07 15:09:46,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 212 states have (on average 2.311320754716981) internal successors, (490), 215 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:46,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 490 transitions. [2021-10-07 15:09:46,022 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 490 transitions. Word has length 14 [2021-10-07 15:09:46,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:46,023 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 490 transitions. [2021-10-07 15:09:46,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 15:09:46,023 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 490 transitions. [2021-10-07 15:09:46,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:09:46,024 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:46,024 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:46,063 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 15:09:46,239 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,SelfDestructingSolverStorable47 [2021-10-07 15:09:46,239 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:09:46,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:46,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1079705533, now seen corresponding path program 10 times [2021-10-07 15:09:46,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:46,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557715988] [2021-10-07 15:09:46,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:46,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:47,096 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:47,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:47,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557715988] [2021-10-07 15:09:47,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557715988] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:47,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030186577] [2021-10-07 15:09:47,097 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:09:47,098 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:47,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:47,102 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 15:09:47,103 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 15:09:47,726 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:09:47,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:47,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-07 15:09:47,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:47,741 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 151 treesize of output 143 [2021-10-07 15:09:48,015 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-07 15:09:48,016 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 15:09:48,113 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:09:48,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030186577] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:48,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:48,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 18 [2021-10-07 15:09:48,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949990623] [2021-10-07 15:09:48,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 15:09:48,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:48,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 15:09:48,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:09:48,116 INFO L87 Difference]: Start difference. First operand 216 states and 490 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 15:09:48,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:48,870 INFO L93 Difference]: Finished difference Result 276 states and 628 transitions. [2021-10-07 15:09:48,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:09:48,870 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 15:09:48,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:48,872 INFO L225 Difference]: With dead ends: 276 [2021-10-07 15:09:48,872 INFO L226 Difference]: Without dead ends: 276 [2021-10-07 15:09:48,873 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 978.8ms TimeCoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:09:48,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-10-07 15:09:48,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 208. [2021-10-07 15:09:48,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 204 states have (on average 2.3137254901960786) internal successors, (472), 207 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:48,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 472 transitions. [2021-10-07 15:09:48,879 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 472 transitions. Word has length 14 [2021-10-07 15:09:48,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:48,880 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 472 transitions. [2021-10-07 15:09:48,880 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 15:09:48,880 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 472 transitions. [2021-10-07 15:09:48,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:09:48,880 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:48,881 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:48,916 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 15:09:49,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:49,082 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:09:49,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:49,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1121385965, now seen corresponding path program 8 times [2021-10-07 15:09:49,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:49,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150158485] [2021-10-07 15:09:49,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:49,084 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:49,247 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:49,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:49,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150158485] [2021-10-07 15:09:49,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150158485] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:49,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328639968] [2021-10-07 15:09:49,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:09:49,248 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:49,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:49,250 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 15:09:49,251 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 15:09:49,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:09:49,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:49,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 15:09:49,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:50,074 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:50,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328639968] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:50,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:50,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2021-10-07 15:09:50,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838993335] [2021-10-07 15:09:50,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 15:09:50,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:50,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 15:09:50,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:09:50,076 INFO L87 Difference]: Start difference. First operand 208 states and 472 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 15:09:50,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:50,414 INFO L93 Difference]: Finished difference Result 190 states and 423 transitions. [2021-10-07 15:09:50,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 15:09:50,415 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 15:09:50,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:50,416 INFO L225 Difference]: With dead ends: 190 [2021-10-07 15:09:50,416 INFO L226 Difference]: Without dead ends: 141 [2021-10-07 15:09:50,416 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 386.2ms TimeCoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:09:50,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-10-07 15:09:50,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-10-07 15:09:50,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 139 states have (on average 2.4676258992805757) internal successors, (343), 140 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:50,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 343 transitions. [2021-10-07 15:09:50,420 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 343 transitions. Word has length 14 [2021-10-07 15:09:50,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:50,421 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 343 transitions. [2021-10-07 15:09:50,421 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 15:09:50,421 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 343 transitions. [2021-10-07 15:09:50,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 15:09:50,421 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:50,422 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:50,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2021-10-07 15:09:50,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-10-07 15:09:50,635 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:09:50,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:50,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1406380512, now seen corresponding path program 9 times [2021-10-07 15:09:50,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:50,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169281962] [2021-10-07 15:09:50,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:50,637 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:50,693 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:09:50,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:50,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169281962] [2021-10-07 15:09:50,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169281962] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:50,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437264208] [2021-10-07 15:09:50,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:09:50,695 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:50,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:50,696 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 15:09:50,717 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 15:09:51,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:09:51,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:51,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:09:51,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:09:51,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437264208] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:51,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:51,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2021-10-07 15:09:51,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869132491] [2021-10-07 15:09:51,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:09:51,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:51,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:09:51,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:09:51,393 INFO L87 Difference]: Start difference. First operand 141 states and 343 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:51,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:51,438 INFO L93 Difference]: Finished difference Result 225 states and 557 transitions. [2021-10-07 15:09:51,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:09:51,439 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 15:09:51,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:51,441 INFO L225 Difference]: With dead ends: 225 [2021-10-07 15:09:51,441 INFO L226 Difference]: Without dead ends: 221 [2021-10-07 15:09:51,441 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 16.7ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:09:51,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-10-07 15:09:51,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 181. [2021-10-07 15:09:51,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 179 states have (on average 2.7430167597765363) internal successors, (491), 180 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:51,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 491 transitions. [2021-10-07 15:09:51,448 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 491 transitions. Word has length 15 [2021-10-07 15:09:51,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:51,448 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 491 transitions. [2021-10-07 15:09:51,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:51,449 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 491 transitions. [2021-10-07 15:09:51,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 15:09:51,449 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:51,449 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:51,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-10-07 15:09:51,664 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,SelfDestructingSolverStorable50 [2021-10-07 15:09:51,665 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:09:51,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:51,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1844043097, now seen corresponding path program 8 times [2021-10-07 15:09:51,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:51,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445339545] [2021-10-07 15:09:51,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:51,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:52,207 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 15:09:52,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:52,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445339545] [2021-10-07 15:09:52,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445339545] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:52,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778960532] [2021-10-07 15:09:52,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:09:52,209 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:52,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:52,210 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 15:09:52,236 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 15:09:52,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:09:52,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:52,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-07 15:09:52,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:52,873 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 47 treesize of output 45 [2021-10-07 15:09:52,956 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 22 treesize of output 18 [2021-10-07 15:09:53,031 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:09:53,031 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 38 treesize of output 37 [2021-10-07 15:09:53,120 INFO L354 Elim1Store]: treesize reduction 30, result has 42.3 percent of original size [2021-10-07 15:09:53,121 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 43 treesize of output 52 [2021-10-07 15:09:53,271 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:09:53,272 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 46 treesize of output 45 [2021-10-07 15:09:53,561 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:09:53,562 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 43 treesize of output 42 [2021-10-07 15:09:54,095 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 15:09:54,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778960532] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:54,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:54,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 15:09:54,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509804865] [2021-10-07 15:09:54,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 15:09:54,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:54,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 15:09:54,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:09:54,099 INFO L87 Difference]: Start difference. First operand 181 states and 491 transitions. Second operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:55,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:55,308 INFO L93 Difference]: Finished difference Result 371 states and 1034 transitions. [2021-10-07 15:09:55,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:09:55,308 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 15:09:55,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:55,310 INFO L225 Difference]: With dead ends: 371 [2021-10-07 15:09:55,311 INFO L226 Difference]: Without dead ends: 367 [2021-10-07 15:09:55,311 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1242.2ms TimeCoverageRelationStatistics Valid=114, Invalid=816, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:09:55,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-10-07 15:09:55,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 225. [2021-10-07 15:09:55,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 223 states have (on average 2.896860986547085) internal successors, (646), 224 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:55,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 646 transitions. [2021-10-07 15:09:55,320 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 646 transitions. Word has length 15 [2021-10-07 15:09:55,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:55,321 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 646 transitions. [2021-10-07 15:09:55,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:55,321 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 646 transitions. [2021-10-07 15:09:55,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:09:55,322 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:55,322 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:55,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-10-07 15:09:55,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:55,538 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:09:55,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:55,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1837755738, now seen corresponding path program 9 times [2021-10-07 15:09:55,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:55,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713478155] [2021-10-07 15:09:55,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:55,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:56,088 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:56,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:56,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713478155] [2021-10-07 15:09:56,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713478155] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:56,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717496929] [2021-10-07 15:09:56,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:09:56,089 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:56,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:56,090 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 15:09:56,103 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 15:09:56,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:09:56,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:56,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 15:09:56,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:56,970 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-07 15:09:56,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717496929] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:56,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:56,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4] total 14 [2021-10-07 15:09:56,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957309723] [2021-10-07 15:09:56,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:09:56,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:56,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:09:56,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:09:56,973 INFO L87 Difference]: Start difference. First operand 225 states and 646 transitions. Second operand has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 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 15:09:57,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:57,604 INFO L93 Difference]: Finished difference Result 354 states and 956 transitions. [2021-10-07 15:09:57,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 15:09:57,605 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 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 16 [2021-10-07 15:09:57,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:57,607 INFO L225 Difference]: With dead ends: 354 [2021-10-07 15:09:57,607 INFO L226 Difference]: Without dead ends: 346 [2021-10-07 15:09:57,607 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 690.7ms TimeCoverageRelationStatistics Valid=122, Invalid=634, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:09:57,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-10-07 15:09:57,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 230. [2021-10-07 15:09:57,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 228 states have (on average 2.8859649122807016) internal successors, (658), 229 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:57,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 658 transitions. [2021-10-07 15:09:57,614 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 658 transitions. Word has length 16 [2021-10-07 15:09:57,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:57,614 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 658 transitions. [2021-10-07 15:09:57,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 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 15:09:57,615 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 658 transitions. [2021-10-07 15:09:57,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:09:57,615 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:57,615 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:57,651 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 15:09:57,828 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,SelfDestructingSolverStorable52 [2021-10-07 15:09:57,829 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:09:57,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:57,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1399574740, now seen corresponding path program 10 times [2021-10-07 15:09:57,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:57,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634377054] [2021-10-07 15:09:57,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:57,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:59,003 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:59,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:59,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634377054] [2021-10-07 15:09:59,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634377054] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:59,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212704413] [2021-10-07 15:09:59,004 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:09:59,004 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:59,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:59,005 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 15:09:59,006 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 15:09:59,706 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:09:59,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:59,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-07 15:09:59,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:59,939 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:09:59,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212704413] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:59,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:59,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 18 [2021-10-07 15:09:59,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828722811] [2021-10-07 15:09:59,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 15:09:59,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:59,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 15:09:59,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:09:59,941 INFO L87 Difference]: Start difference. First operand 230 states and 658 transitions. Second operand has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:01,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:01,318 INFO L93 Difference]: Finished difference Result 381 states and 1004 transitions. [2021-10-07 15:10:01,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:10:01,318 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:10:01,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:01,321 INFO L225 Difference]: With dead ends: 381 [2021-10-07 15:10:01,321 INFO L226 Difference]: Without dead ends: 373 [2021-10-07 15:10:01,321 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1514.3ms TimeCoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 15:10:01,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-10-07 15:10:01,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 184. [2021-10-07 15:10:01,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 182 states have (on average 2.8516483516483517) internal successors, (519), 183 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:01,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 519 transitions. [2021-10-07 15:10:01,328 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 519 transitions. Word has length 16 [2021-10-07 15:10:01,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:01,328 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 519 transitions. [2021-10-07 15:10:01,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:01,328 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 519 transitions. [2021-10-07 15:10:01,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:10:01,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:01,329 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:10:01,356 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 15:10:01,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:01,535 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:10:01,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:01,535 INFO L82 PathProgramCache]: Analyzing trace with hash -632035309, now seen corresponding path program 11 times [2021-10-07 15:10:01,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:01,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543741207] [2021-10-07 15:10:01,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:01,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:02,500 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 15:10:02,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:02,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543741207] [2021-10-07 15:10:02,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543741207] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:02,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091095624] [2021-10-07 15:10:02,501 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:10:02,501 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:02,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:02,502 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 15:10:02,520 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 15:10:03,231 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:10:03,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:10:03,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-07 15:10:03,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:03,647 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 15:10:03,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091095624] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:03,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:03,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 19 [2021-10-07 15:10:03,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564319376] [2021-10-07 15:10:03,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 15:10:03,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:03,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 15:10:03,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:10:03,650 INFO L87 Difference]: Start difference. First operand 184 states and 519 transitions. Second operand has 21 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:05,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:05,259 INFO L93 Difference]: Finished difference Result 381 states and 950 transitions. [2021-10-07 15:10:05,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 15:10:05,260 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:10:05,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:05,262 INFO L225 Difference]: With dead ends: 381 [2021-10-07 15:10:05,262 INFO L226 Difference]: Without dead ends: 369 [2021-10-07 15:10:05,263 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1571.4ms TimeCoverageRelationStatistics Valid=197, Invalid=1363, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 15:10:05,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-10-07 15:10:05,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 264. [2021-10-07 15:10:05,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 260 states have (on average 2.796153846153846) internal successors, (727), 263 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:05,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 727 transitions. [2021-10-07 15:10:05,270 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 727 transitions. Word has length 16 [2021-10-07 15:10:05,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:05,271 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 727 transitions. [2021-10-07 15:10:05,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:05,271 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 727 transitions. [2021-10-07 15:10:05,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:10:05,272 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:05,272 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:10:05,309 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 15:10:05,486 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,SelfDestructingSolverStorable54 [2021-10-07 15:10:05,487 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:10:05,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:05,487 INFO L82 PathProgramCache]: Analyzing trace with hash -632052049, now seen corresponding path program 12 times [2021-10-07 15:10:05,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:05,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208627065] [2021-10-07 15:10:05,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:05,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:05,991 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 15:10:05,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:05,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208627065] [2021-10-07 15:10:05,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208627065] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:05,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15507717] [2021-10-07 15:10:05,992 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:10:05,993 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:05,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:05,994 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 15:10:05,995 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 15:10:06,738 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:10:06,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:10:06,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-07 15:10:06,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:06,873 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 15:10:06,937 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 15:10:07,022 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 15:10:07,104 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 15:10:07,697 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:07,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15507717] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:07,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:07,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2021-10-07 15:10:07,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647505449] [2021-10-07 15:10:07,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:10:07,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:07,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:10:07,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:10:07,699 INFO L87 Difference]: Start difference. First operand 264 states and 727 transitions. Second operand has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:10,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:10,834 INFO L93 Difference]: Finished difference Result 589 states and 1427 transitions. [2021-10-07 15:10:10,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-07 15:10:10,835 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:10:10,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:10,839 INFO L225 Difference]: With dead ends: 589 [2021-10-07 15:10:10,840 INFO L226 Difference]: Without dead ends: 577 [2021-10-07 15:10:10,840 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 2745.9ms TimeCoverageRelationStatistics Valid=454, Invalid=2408, Unknown=0, NotChecked=0, Total=2862 [2021-10-07 15:10:10,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-10-07 15:10:10,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 318. [2021-10-07 15:10:10,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 314 states have (on average 2.9140127388535033) internal successors, (915), 317 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:10,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 915 transitions. [2021-10-07 15:10:10,851 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 915 transitions. Word has length 16 [2021-10-07 15:10:10,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:10,851 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 915 transitions. [2021-10-07 15:10:10,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:10,852 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 915 transitions. [2021-10-07 15:10:10,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:10:10,852 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:10,852 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:10:10,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2021-10-07 15:10:11,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:11,067 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:10:11,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:11,067 INFO L82 PathProgramCache]: Analyzing trace with hash -648628314, now seen corresponding path program 11 times [2021-10-07 15:10:11,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:11,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911378263] [2021-10-07 15:10:11,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:11,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:11,372 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:11,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:11,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911378263] [2021-10-07 15:10:11,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911378263] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:11,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074737065] [2021-10-07 15:10:11,373 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:10:11,373 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:11,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:11,374 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 15:10:11,394 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 15:10:12,156 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:10:12,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:10:12,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-07 15:10:12,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:12,685 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 15:10:12,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074737065] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:12,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:12,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 15:10:12,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693891639] [2021-10-07 15:10:12,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 15:10:12,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:12,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 15:10:12,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:10:12,687 INFO L87 Difference]: Start difference. First operand 318 states and 915 transitions. Second operand has 22 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:13,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:13,595 INFO L93 Difference]: Finished difference Result 385 states and 1052 transitions. [2021-10-07 15:10:13,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:10:13,596 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:10:13,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:13,598 INFO L225 Difference]: With dead ends: 385 [2021-10-07 15:10:13,598 INFO L226 Difference]: Without dead ends: 385 [2021-10-07 15:10:13,598 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 954.1ms TimeCoverageRelationStatistics Valid=130, Invalid=992, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 15:10:13,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-10-07 15:10:13,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 348. [2021-10-07 15:10:13,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 344 states have (on average 2.877906976744186) internal successors, (990), 347 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:13,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 990 transitions. [2021-10-07 15:10:13,607 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 990 transitions. Word has length 16 [2021-10-07 15:10:13,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:13,607 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 990 transitions. [2021-10-07 15:10:13,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:13,608 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 990 transitions. [2021-10-07 15:10:13,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:10:13,609 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:13,609 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:10:13,647 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 15:10:13,823 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,SelfDestructingSolverStorable56 [2021-10-07 15:10:13,823 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:10:13,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:13,824 INFO L82 PathProgramCache]: Analyzing trace with hash -648628338, now seen corresponding path program 7 times [2021-10-07 15:10:13,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:13,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995343550] [2021-10-07 15:10:13,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:13,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:14,087 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:14,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:14,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995343550] [2021-10-07 15:10:14,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995343550] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:14,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268686624] [2021-10-07 15:10:14,088 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:10:14,089 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:14,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:14,090 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 15:10:14,091 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 15:10:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:14,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-07 15:10:14,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:15,060 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 15:10:15,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268686624] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:15,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:15,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 18 [2021-10-07 15:10:15,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655312412] [2021-10-07 15:10:15,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 15:10:15,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:15,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 15:10:15,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:10:15,062 INFO L87 Difference]: Start difference. First operand 348 states and 990 transitions. Second operand has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:15,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:15,763 INFO L93 Difference]: Finished difference Result 740 states and 1847 transitions. [2021-10-07 15:10:15,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:10:15,764 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:10:15,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:15,768 INFO L225 Difference]: With dead ends: 740 [2021-10-07 15:10:15,768 INFO L226 Difference]: Without dead ends: 723 [2021-10-07 15:10:15,768 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 472.2ms TimeCoverageRelationStatistics Valid=113, Invalid=757, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:10:15,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-10-07 15:10:15,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 426. [2021-10-07 15:10:15,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 422 states have (on average 2.995260663507109) internal successors, (1264), 425 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:15,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1264 transitions. [2021-10-07 15:10:15,802 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1264 transitions. Word has length 16 [2021-10-07 15:10:15,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:15,803 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 1264 transitions. [2021-10-07 15:10:15,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:15,803 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1264 transitions. [2021-10-07 15:10:15,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:10:15,804 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:15,804 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:10:15,842 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 15:10:16,014 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,SelfDestructingSolverStorable57 [2021-10-07 15:10:16,015 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:10:16,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:16,016 INFO L82 PathProgramCache]: Analyzing trace with hash -648138204, now seen corresponding path program 12 times [2021-10-07 15:10:16,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:16,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213915537] [2021-10-07 15:10:16,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:16,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:16,771 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 15:10:16,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:16,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213915537] [2021-10-07 15:10:16,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213915537] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:16,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207103836] [2021-10-07 15:10:16,773 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:10:16,773 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:16,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:16,774 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 15:10:16,775 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 15:10:17,582 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:10:17,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:10:17,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-07 15:10:17,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:17,750 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 15:10:17,807 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 15:10:17,893 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 15:10:18,205 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:18,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207103836] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:18,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:18,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-07 15:10:18,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23856021] [2021-10-07 15:10:18,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:10:18,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:18,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:10:18,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:10:18,208 INFO L87 Difference]: Start difference. First operand 426 states and 1264 transitions. Second operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:20,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:20,616 INFO L93 Difference]: Finished difference Result 677 states and 1730 transitions. [2021-10-07 15:10:20,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 15:10:20,617 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:10:20,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:20,620 INFO L225 Difference]: With dead ends: 677 [2021-10-07 15:10:20,620 INFO L226 Difference]: Without dead ends: 649 [2021-10-07 15:10:20,621 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 2274.4ms TimeCoverageRelationStatistics Valid=239, Invalid=2017, Unknown=0, NotChecked=0, Total=2256 [2021-10-07 15:10:20,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2021-10-07 15:10:20,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 450. [2021-10-07 15:10:20,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 446 states have (on average 3.0291479820627805) internal successors, (1351), 449 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:20,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1351 transitions. [2021-10-07 15:10:20,654 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1351 transitions. Word has length 16 [2021-10-07 15:10:20,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:20,654 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 1351 transitions. [2021-10-07 15:10:20,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:20,654 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1351 transitions. [2021-10-07 15:10:20,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:10:20,655 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:20,655 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:10:20,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-10-07 15:10:20,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-10-07 15:10:20,856 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:10:20,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:20,858 INFO L82 PathProgramCache]: Analyzing trace with hash -648122394, now seen corresponding path program 13 times [2021-10-07 15:10:20,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:20,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264077147] [2021-10-07 15:10:20,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:20,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:21,670 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 15:10:21,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:21,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264077147] [2021-10-07 15:10:21,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264077147] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:21,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737856312] [2021-10-07 15:10:21,671 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:10:21,671 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:21,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:21,673 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 15:10:21,674 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 15:10:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:22,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-07 15:10:22,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:22,967 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:22,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737856312] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:22,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:22,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 21 [2021-10-07 15:10:22,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342598728] [2021-10-07 15:10:22,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:10:22,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:22,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:10:22,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:10:22,970 INFO L87 Difference]: Start difference. First operand 450 states and 1351 transitions. Second operand has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:24,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:24,920 INFO L93 Difference]: Finished difference Result 628 states and 1641 transitions. [2021-10-07 15:10:24,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:10:24,921 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:10:24,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:24,925 INFO L225 Difference]: With dead ends: 628 [2021-10-07 15:10:24,925 INFO L226 Difference]: Without dead ends: 628 [2021-10-07 15:10:24,926 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1834.4ms TimeCoverageRelationStatistics Valid=184, Invalid=1538, Unknown=0, NotChecked=0, Total=1722 [2021-10-07 15:10:24,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-10-07 15:10:24,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 450. [2021-10-07 15:10:24,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 446 states have (on average 3.0201793721973096) internal successors, (1347), 449 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:24,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1347 transitions. [2021-10-07 15:10:24,937 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1347 transitions. Word has length 16 [2021-10-07 15:10:24,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:24,937 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 1347 transitions. [2021-10-07 15:10:24,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:24,937 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1347 transitions. [2021-10-07 15:10:24,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:10:24,938 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:24,938 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:10:24,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2021-10-07 15:10:25,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:25,146 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:10:25,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:25,147 INFO L82 PathProgramCache]: Analyzing trace with hash -648122418, now seen corresponding path program 8 times [2021-10-07 15:10:25,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:25,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036155964] [2021-10-07 15:10:25,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:25,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:25,757 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 15:10:25,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:25,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036155964] [2021-10-07 15:10:25,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036155964] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:25,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430933653] [2021-10-07 15:10:25,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:10:25,758 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:25,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:25,759 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 15:10:25,760 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 15:10:26,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:10:26,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:10:26,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-07 15:10:26,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:26,764 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 15:10:26,819 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 15:10:26,875 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 15:10:27,174 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 15:10:27,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430933653] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:27,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:27,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-07 15:10:27,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613025693] [2021-10-07 15:10:27,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:10:27,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:27,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:10:27,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:10:27,175 INFO L87 Difference]: Start difference. First operand 450 states and 1347 transitions. Second operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:31,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:31,245 INFO L93 Difference]: Finished difference Result 459 states and 944 transitions. [2021-10-07 15:10:31,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-07 15:10:31,246 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:10:31,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:31,248 INFO L225 Difference]: With dead ends: 459 [2021-10-07 15:10:31,248 INFO L226 Difference]: Without dead ends: 431 [2021-10-07 15:10:31,249 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 3813.2ms TimeCoverageRelationStatistics Valid=598, Invalid=3692, Unknown=0, NotChecked=0, Total=4290 [2021-10-07 15:10:31,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-10-07 15:10:31,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 268. [2021-10-07 15:10:31,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 264 states have (on average 2.4734848484848486) internal successors, (653), 267 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:31,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 653 transitions. [2021-10-07 15:10:31,256 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 653 transitions. Word has length 16 [2021-10-07 15:10:31,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:31,256 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 653 transitions. [2021-10-07 15:10:31,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:31,257 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 653 transitions. [2021-10-07 15:10:31,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:10:31,257 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:31,258 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:10:31,294 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 15:10:31,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:31,472 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:10:31,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:31,473 INFO L82 PathProgramCache]: Analyzing trace with hash -648122449, now seen corresponding path program 13 times [2021-10-07 15:10:31,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:31,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774999403] [2021-10-07 15:10:31,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:31,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:32,229 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 15:10:32,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:32,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774999403] [2021-10-07 15:10:32,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774999403] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:32,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281745175] [2021-10-07 15:10:32,230 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:10:32,230 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:32,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:32,233 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 15:10:32,250 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 15:10:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:33,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-07 15:10:33,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:33,097 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 179 treesize of output 171 [2021-10-07 15:10:33,269 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 15:10:33,327 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 15:10:33,395 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 15:10:33,791 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 15:10:33,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281745175] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:33,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:33,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2021-10-07 15:10:33,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423738383] [2021-10-07 15:10:33,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:10:33,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:33,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:10:33,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:10:33,792 INFO L87 Difference]: Start difference. First operand 268 states and 653 transitions. Second operand has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:35,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:35,094 INFO L93 Difference]: Finished difference Result 330 states and 758 transitions. [2021-10-07 15:10:35,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:10:35,096 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:10:35,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:35,097 INFO L225 Difference]: With dead ends: 330 [2021-10-07 15:10:35,098 INFO L226 Difference]: Without dead ends: 326 [2021-10-07 15:10:35,098 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1483.8ms TimeCoverageRelationStatistics Valid=166, Invalid=1240, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 15:10:35,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-10-07 15:10:35,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 264. [2021-10-07 15:10:35,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 260 states have (on average 2.480769230769231) internal successors, (645), 263 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:35,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 645 transitions. [2021-10-07 15:10:35,105 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 645 transitions. Word has length 16 [2021-10-07 15:10:35,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:35,105 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 645 transitions. [2021-10-07 15:10:35,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:35,105 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 645 transitions. [2021-10-07 15:10:35,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:10:35,106 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:35,106 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:10:35,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-10-07 15:10:35,319 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,SelfDestructingSolverStorable61 [2021-10-07 15:10:35,319 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:10:35,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:35,320 INFO L82 PathProgramCache]: Analyzing trace with hash -648139165, now seen corresponding path program 10 times [2021-10-07 15:10:35,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:35,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993181030] [2021-10-07 15:10:35,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:35,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:36,055 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:36,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:36,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993181030] [2021-10-07 15:10:36,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993181030] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:36,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347198975] [2021-10-07 15:10:36,056 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:10:36,056 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:36,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:36,058 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 15:10:36,059 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 15:10:36,943 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:10:36,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:10:36,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 54 conjunts are in the unsatisfiable core [2021-10-07 15:10:36,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:36,958 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 69 treesize of output 67 [2021-10-07 15:10:37,147 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 19 treesize of output 15 [2021-10-07 15:10:37,225 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 15:10:37,226 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 25 treesize of output 24 [2021-10-07 15:10:37,321 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 15:10:37,321 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 25 treesize of output 24 [2021-10-07 15:10:37,823 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 15:10:37,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347198975] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:37,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:37,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-07 15:10:37,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282490661] [2021-10-07 15:10:37,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:10:37,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:37,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:10:37,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:10:37,825 INFO L87 Difference]: Start difference. First operand 264 states and 645 transitions. Second operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:39,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:39,047 INFO L93 Difference]: Finished difference Result 332 states and 753 transitions. [2021-10-07 15:10:39,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 15:10:39,047 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:10:39,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:39,049 INFO L225 Difference]: With dead ends: 332 [2021-10-07 15:10:39,049 INFO L226 Difference]: Without dead ends: 332 [2021-10-07 15:10:39,049 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 1414.3ms TimeCoverageRelationStatistics Valid=155, Invalid=1105, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 15:10:39,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-10-07 15:10:39,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 268. [2021-10-07 15:10:39,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 264 states have (on average 2.465909090909091) internal successors, (651), 267 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:39,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 651 transitions. [2021-10-07 15:10:39,054 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 651 transitions. Word has length 16 [2021-10-07 15:10:39,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:39,055 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 651 transitions. [2021-10-07 15:10:39,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:39,055 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 651 transitions. [2021-10-07 15:10:39,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:10:39,056 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:39,056 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:10:39,095 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 15:10:39,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:39,271 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:10:39,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:39,271 INFO L82 PathProgramCache]: Analyzing trace with hash -648139189, now seen corresponding path program 14 times [2021-10-07 15:10:39,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:39,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007103562] [2021-10-07 15:10:39,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:39,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:40,283 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 15:10:40,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:40,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007103562] [2021-10-07 15:10:40,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007103562] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:40,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341393758] [2021-10-07 15:10:40,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:10:40,285 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:40,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:40,286 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 15:10:40,288 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 15:10:41,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:10:41,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:10:41,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-07 15:10:41,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:41,422 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 15:10:41,489 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 15:10:41,572 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 15:10:42,076 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 15:10:42,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341393758] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:42,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:42,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-07 15:10:42,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854298025] [2021-10-07 15:10:42,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:10:42,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:42,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:10:42,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:10:42,078 INFO L87 Difference]: Start difference. First operand 268 states and 651 transitions. Second operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:43,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:43,132 INFO L93 Difference]: Finished difference Result 306 states and 711 transitions. [2021-10-07 15:10:43,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 15:10:43,133 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:10:43,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:43,135 INFO L225 Difference]: With dead ends: 306 [2021-10-07 15:10:43,135 INFO L226 Difference]: Without dead ends: 300 [2021-10-07 15:10:43,135 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1434.5ms TimeCoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 15:10:43,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-10-07 15:10:43,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 262. [2021-10-07 15:10:43,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 258 states have (on average 2.4806201550387597) internal successors, (640), 261 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:43,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 640 transitions. [2021-10-07 15:10:43,140 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 640 transitions. Word has length 16 [2021-10-07 15:10:43,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:43,141 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 640 transitions. [2021-10-07 15:10:43,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:43,141 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 640 transitions. [2021-10-07 15:10:43,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:10:43,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:43,142 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:10:43,170 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 15:10:43,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:43,343 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:10:43,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:43,343 INFO L82 PathProgramCache]: Analyzing trace with hash -648658105, now seen corresponding path program 11 times [2021-10-07 15:10:43,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:43,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351087463] [2021-10-07 15:10:43,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:43,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:44,043 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:44,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:44,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351087463] [2021-10-07 15:10:44,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351087463] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:44,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40902986] [2021-10-07 15:10:44,044 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:10:44,044 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:44,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:44,046 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 15:10:44,046 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 15:10:45,005 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:10:45,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:10:45,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-07 15:10:45,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:45,024 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 69 treesize of output 67 [2021-10-07 15:10:45,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 15:10:45,270 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:10:45,270 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 15:10:45,381 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:10:45,382 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 15:10:45,912 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 15:10:45,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40902986] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:45,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:45,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-07 15:10:45,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335649991] [2021-10-07 15:10:45,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:10:45,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:45,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:10:45,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:10:45,914 INFO L87 Difference]: Start difference. First operand 262 states and 640 transitions. Second operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:48,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:48,024 INFO L93 Difference]: Finished difference Result 356 states and 789 transitions. [2021-10-07 15:10:48,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:10:48,024 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:10:48,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:48,026 INFO L225 Difference]: With dead ends: 356 [2021-10-07 15:10:48,026 INFO L226 Difference]: Without dead ends: 344 [2021-10-07 15:10:48,027 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2216.0ms TimeCoverageRelationStatistics Valid=176, Invalid=1156, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 15:10:48,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-10-07 15:10:48,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 275. [2021-10-07 15:10:48,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 271 states have (on average 2.4354243542435423) internal successors, (660), 274 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:48,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 660 transitions. [2021-10-07 15:10:48,034 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 660 transitions. Word has length 16 [2021-10-07 15:10:48,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:48,034 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 660 transitions. [2021-10-07 15:10:48,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:48,034 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 660 transitions. [2021-10-07 15:10:48,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:10:48,035 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:48,035 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:10:48,068 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 15:10:48,249 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,SelfDestructingSolverStorable64 [2021-10-07 15:10:48,250 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:10:48,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:48,250 INFO L82 PathProgramCache]: Analyzing trace with hash -648658129, now seen corresponding path program 15 times [2021-10-07 15:10:48,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:48,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68100070] [2021-10-07 15:10:48,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:48,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:49,051 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 15:10:49,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:49,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68100070] [2021-10-07 15:10:49,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68100070] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:49,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968735834] [2021-10-07 15:10:49,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:10:49,053 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:49,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:49,054 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 15:10:49,057 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 15:10:50,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:10:50,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:10:50,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-07 15:10:50,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:50,389 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 15:10:50,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968735834] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:50,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:50,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 17 [2021-10-07 15:10:50,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096968978] [2021-10-07 15:10:50,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 15:10:50,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:50,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 15:10:50,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:10:50,391 INFO L87 Difference]: Start difference. First operand 275 states and 660 transitions. Second operand has 19 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:51,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:51,525 INFO L93 Difference]: Finished difference Result 314 states and 754 transitions. [2021-10-07 15:10:51,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 15:10:51,528 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:10:51,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:51,531 INFO L225 Difference]: With dead ends: 314 [2021-10-07 15:10:51,531 INFO L226 Difference]: Without dead ends: 314 [2021-10-07 15:10:51,532 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1128.1ms TimeCoverageRelationStatistics Valid=98, Invalid=772, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:10:51,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-10-07 15:10:51,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 308. [2021-10-07 15:10:51,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 304 states have (on average 2.4539473684210527) internal successors, (746), 307 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:51,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 746 transitions. [2021-10-07 15:10:51,538 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 746 transitions. Word has length 16 [2021-10-07 15:10:51,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:51,538 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 746 transitions. [2021-10-07 15:10:51,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:51,538 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 746 transitions. [2021-10-07 15:10:51,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:10:51,539 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:51,539 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:10:51,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-10-07 15:10:51,752 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,SelfDestructingSolverStorable65 [2021-10-07 15:10:51,753 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:10:51,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:51,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1330744359, now seen corresponding path program 16 times [2021-10-07 15:10:51,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:51,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994213968] [2021-10-07 15:10:51,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:51,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:52,507 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 15:10:52,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:52,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994213968] [2021-10-07 15:10:52,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994213968] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:52,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470355233] [2021-10-07 15:10:52,509 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:10:52,509 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:52,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:52,510 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 15:10:52,511 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 15:10:53,557 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:10:53,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:10:53,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 58 conjunts are in the unsatisfiable core [2021-10-07 15:10:53,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:53,572 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 197 treesize of output 181 [2021-10-07 15:10:53,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 15:10:53,830 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 15:10:54,001 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:10:54,001 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 15:10:54,425 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 15:10:54,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470355233] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:54,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:54,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-07 15:10:54,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474109492] [2021-10-07 15:10:54,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:10:54,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:54,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:10:54,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:10:54,427 INFO L87 Difference]: Start difference. First operand 308 states and 746 transitions. Second operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:55,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:10:55,989 INFO L93 Difference]: Finished difference Result 330 states and 749 transitions. [2021-10-07 15:10:55,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:10:55,989 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:10:55,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:10:55,992 INFO L225 Difference]: With dead ends: 330 [2021-10-07 15:10:55,992 INFO L226 Difference]: Without dead ends: 322 [2021-10-07 15:10:55,992 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1744.7ms TimeCoverageRelationStatistics Valid=192, Invalid=1290, Unknown=0, NotChecked=0, Total=1482 [2021-10-07 15:10:55,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-10-07 15:10:55,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 278. [2021-10-07 15:10:55,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 274 states have (on average 2.423357664233577) internal successors, (664), 277 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:55,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 664 transitions. [2021-10-07 15:10:55,997 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 664 transitions. Word has length 16 [2021-10-07 15:10:55,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:55,997 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 664 transitions. [2021-10-07 15:10:55,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:55,998 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 664 transitions. [2021-10-07 15:10:55,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:10:55,998 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:55,998 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:10:56,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-10-07 15:10:56,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:56,205 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:10:56,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:56,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1330761099, now seen corresponding path program 17 times [2021-10-07 15:10:56,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:56,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930672834] [2021-10-07 15:10:56,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:56,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:56,943 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 15:10:56,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:56,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930672834] [2021-10-07 15:10:56,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930672834] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:56,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984503574] [2021-10-07 15:10:56,945 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:10:56,945 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:56,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:56,946 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 15:10:56,949 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 15:10:57,985 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:10:57,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:10:57,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-07 15:10:57,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:58,003 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 121 treesize of output 113 [2021-10-07 15:10:58,197 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 15:10:58,250 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 15:10:58,401 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:10:58,402 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 15:10:58,827 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 15:10:58,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984503574] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:58,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:10:58,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-07 15:10:58,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142596729] [2021-10-07 15:10:58,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:10:58,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:10:58,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:10:58,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:10:58,830 INFO L87 Difference]: Start difference. First operand 278 states and 664 transitions. Second operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:00,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:00,122 INFO L93 Difference]: Finished difference Result 291 states and 679 transitions. [2021-10-07 15:11:00,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:11:00,123 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:11:00,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:00,125 INFO L225 Difference]: With dead ends: 291 [2021-10-07 15:11:00,125 INFO L226 Difference]: Without dead ends: 283 [2021-10-07 15:11:00,125 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1532.9ms TimeCoverageRelationStatistics Valid=150, Invalid=1110, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 15:11:00,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-10-07 15:11:00,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 270. [2021-10-07 15:11:00,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 266 states have (on average 2.443609022556391) internal successors, (650), 269 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:00,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 650 transitions. [2021-10-07 15:11:00,131 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 650 transitions. Word has length 16 [2021-10-07 15:11:00,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:00,131 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 650 transitions. [2021-10-07 15:11:00,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:00,131 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 650 transitions. [2021-10-07 15:11:00,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:11:00,132 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:00,132 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:00,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-10-07 15:11:00,343 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,SelfDestructingSolverStorable67 [2021-10-07 15:11:00,344 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:11:00,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:00,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1346831475, now seen corresponding path program 12 times [2021-10-07 15:11:00,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:00,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332829680] [2021-10-07 15:11:00,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:00,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:00,982 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 15:11:00,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:00,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332829680] [2021-10-07 15:11:00,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332829680] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:00,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507324163] [2021-10-07 15:11:00,984 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:11:00,984 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:00,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:00,985 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 15:11:00,986 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 15:11:02,051 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:11:02,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:02,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-07 15:11:02,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:02,064 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 47 treesize of output 45 [2021-10-07 15:11:02,238 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 15:11:02,294 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 15:11:02,388 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 15:11:02,642 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 15:11:02,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507324163] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:02,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:02,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-07 15:11:02,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877328873] [2021-10-07 15:11:02,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:11:02,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:02,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:11:02,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:11:02,644 INFO L87 Difference]: Start difference. First operand 270 states and 650 transitions. Second operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:04,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:04,515 INFO L93 Difference]: Finished difference Result 333 states and 744 transitions. [2021-10-07 15:11:04,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:11:04,515 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:11:04,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:04,517 INFO L225 Difference]: With dead ends: 333 [2021-10-07 15:11:04,517 INFO L226 Difference]: Without dead ends: 333 [2021-10-07 15:11:04,518 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 1921.5ms TimeCoverageRelationStatistics Valid=200, Invalid=1692, Unknown=0, NotChecked=0, Total=1892 [2021-10-07 15:11:04,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-10-07 15:11:04,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 272. [2021-10-07 15:11:04,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 268 states have (on average 2.4365671641791047) internal successors, (653), 271 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:04,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 653 transitions. [2021-10-07 15:11:04,523 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 653 transitions. Word has length 16 [2021-10-07 15:11:04,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:04,523 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 653 transitions. [2021-10-07 15:11:04,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:04,523 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 653 transitions. [2021-10-07 15:11:04,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:11:04,524 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:04,524 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:04,554 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 15:11:04,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-10-07 15:11:04,726 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:11:04,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:04,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1346831499, now seen corresponding path program 18 times [2021-10-07 15:11:04,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:04,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420628195] [2021-10-07 15:11:04,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:04,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:05,635 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 15:11:05,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:05,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420628195] [2021-10-07 15:11:05,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420628195] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:05,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368687052] [2021-10-07 15:11:05,636 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:11:05,636 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:05,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:05,637 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 15:11:05,637 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 15:11:06,739 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:11:06,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:06,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 66 conjunts are in the unsatisfiable core [2021-10-07 15:11:06,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:06,764 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 47 treesize of output 45 [2021-10-07 15:11:06,842 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 16 treesize of output 12 [2021-10-07 15:11:06,894 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 16 treesize of output 12 [2021-10-07 15:11:06,949 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 15:11:07,008 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 15:11:07,125 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:11:07,126 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 28 treesize of output 27 [2021-10-07 15:11:07,532 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 15:11:07,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368687052] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:07,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:07,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-07 15:11:07,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461462975] [2021-10-07 15:11:07,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:11:07,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:07,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:11:07,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:11:07,534 INFO L87 Difference]: Start difference. First operand 272 states and 653 transitions. Second operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:08,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:08,859 INFO L93 Difference]: Finished difference Result 338 states and 763 transitions. [2021-10-07 15:11:08,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 15:11:08,859 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:11:08,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:08,861 INFO L225 Difference]: With dead ends: 338 [2021-10-07 15:11:08,861 INFO L226 Difference]: Without dead ends: 334 [2021-10-07 15:11:08,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1601.2ms TimeCoverageRelationStatistics Valid=188, Invalid=1218, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 15:11:08,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-10-07 15:11:08,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 279. [2021-10-07 15:11:08,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 275 states have (on average 2.429090909090909) internal successors, (668), 278 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:08,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 668 transitions. [2021-10-07 15:11:08,870 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 668 transitions. Word has length 16 [2021-10-07 15:11:08,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:08,871 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 668 transitions. [2021-10-07 15:11:08,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:08,871 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 668 transitions. [2021-10-07 15:11:08,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:11:08,872 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:08,872 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:08,902 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 15:11:09,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-10-07 15:11:09,081 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:11:09,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:09,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1346848215, now seen corresponding path program 13 times [2021-10-07 15:11:09,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:09,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426586504] [2021-10-07 15:11:09,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:09,083 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:09,422 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 15:11:09,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:09,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426586504] [2021-10-07 15:11:09,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426586504] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:09,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372556557] [2021-10-07 15:11:09,423 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:11:09,423 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:09,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:09,425 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 15:11:09,428 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 15:11:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:10,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-07 15:11:10,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:10,728 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:11:10,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372556557] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:10,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:10,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 17 [2021-10-07 15:11:10,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440828542] [2021-10-07 15:11:10,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 15:11:10,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:10,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 15:11:10,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:11:10,730 INFO L87 Difference]: Start difference. First operand 279 states and 668 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:11,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:11,753 INFO L93 Difference]: Finished difference Result 490 states and 1105 transitions. [2021-10-07 15:11:11,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 15:11:11,754 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:11:11,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:11,758 INFO L225 Difference]: With dead ends: 490 [2021-10-07 15:11:11,758 INFO L226 Difference]: Without dead ends: 490 [2021-10-07 15:11:11,758 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 775.5ms TimeCoverageRelationStatistics Valid=174, Invalid=1086, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 15:11:11,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-10-07 15:11:11,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 271. [2021-10-07 15:11:11,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 267 states have (on average 2.453183520599251) internal successors, (655), 270 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:11,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 655 transitions. [2021-10-07 15:11:11,767 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 655 transitions. Word has length 16 [2021-10-07 15:11:11,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:11,767 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 655 transitions. [2021-10-07 15:11:11,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:11,767 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 655 transitions. [2021-10-07 15:11:11,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:11:11,768 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:11,768 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:11,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:11,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:11,970 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:11:11,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:11,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1346848239, now seen corresponding path program 19 times [2021-10-07 15:11:11,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:11,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280135793] [2021-10-07 15:11:11,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:11,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:12,823 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:12,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:12,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280135793] [2021-10-07 15:11:12,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280135793] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:12,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167034154] [2021-10-07 15:11:12,824 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:11:12,824 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:12,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:12,826 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 15:11:12,826 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 15:11:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:13,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-07 15:11:13,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:13,966 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 530 treesize of output 514 [2021-10-07 15:11:14,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 15:11:14,119 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 16 treesize of output 12 [2021-10-07 15:11:14,175 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 15:11:14,228 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 15:11:14,399 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:11:14,400 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 15:11:14,777 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 15:11:14,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167034154] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:14,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:14,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-07 15:11:14,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667154878] [2021-10-07 15:11:14,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:11:14,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:14,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:11:14,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:11:14,780 INFO L87 Difference]: Start difference. First operand 271 states and 655 transitions. Second operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:15,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:15,948 INFO L93 Difference]: Finished difference Result 320 states and 731 transitions. [2021-10-07 15:11:15,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:11:15,949 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:11:15,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:15,951 INFO L225 Difference]: With dead ends: 320 [2021-10-07 15:11:15,951 INFO L226 Difference]: Without dead ends: 314 [2021-10-07 15:11:15,951 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1450.1ms TimeCoverageRelationStatistics Valid=150, Invalid=1040, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 15:11:15,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-10-07 15:11:15,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 269. [2021-10-07 15:11:15,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 265 states have (on average 2.452830188679245) internal successors, (650), 268 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:15,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 650 transitions. [2021-10-07 15:11:15,958 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 650 transitions. Word has length 16 [2021-10-07 15:11:15,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:15,958 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 650 transitions. [2021-10-07 15:11:15,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:15,958 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 650 transitions. [2021-10-07 15:11:15,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:11:15,959 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:15,959 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:15,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2021-10-07 15:11:16,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:16,175 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:11:16,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:16,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1347367155, now seen corresponding path program 14 times [2021-10-07 15:11:16,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:16,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272893559] [2021-10-07 15:11:16,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:16,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:16,957 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 15:11:16,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:16,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272893559] [2021-10-07 15:11:16,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272893559] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:16,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718461050] [2021-10-07 15:11:16,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:11:16,958 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:16,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:16,959 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 15:11:16,976 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 15:11:18,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:11:18,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:18,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-07 15:11:18,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:18,166 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 197 treesize of output 181 [2021-10-07 15:11:18,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 15:11:18,374 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 15:11:18,479 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 15:11:18,774 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:11:18,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718461050] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:18,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:18,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-07 15:11:18,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359094491] [2021-10-07 15:11:18,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:11:18,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:18,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:11:18,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:11:18,776 INFO L87 Difference]: Start difference. First operand 269 states and 650 transitions. Second operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:20,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:20,233 INFO L93 Difference]: Finished difference Result 295 states and 696 transitions. [2021-10-07 15:11:20,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 15:11:20,234 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:11:20,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:20,236 INFO L225 Difference]: With dead ends: 295 [2021-10-07 15:11:20,236 INFO L226 Difference]: Without dead ends: 295 [2021-10-07 15:11:20,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1643.0ms TimeCoverageRelationStatistics Valid=157, Invalid=1175, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 15:11:20,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-10-07 15:11:20,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 277. [2021-10-07 15:11:20,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 274 states have (on average 2.4197080291970803) internal successors, (663), 276 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:20,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 663 transitions. [2021-10-07 15:11:20,241 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 663 transitions. Word has length 16 [2021-10-07 15:11:20,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:20,242 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 663 transitions. [2021-10-07 15:11:20,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:20,242 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 663 transitions. [2021-10-07 15:11:20,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:11:20,242 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:20,242 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:20,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2021-10-07 15:11:20,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:20,443 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:11:20,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:20,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1347367179, now seen corresponding path program 20 times [2021-10-07 15:11:20,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:20,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424430433] [2021-10-07 15:11:20,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:20,445 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:21,170 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 15:11:21,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:21,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424430433] [2021-10-07 15:11:21,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424430433] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:21,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518427996] [2021-10-07 15:11:21,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:11:21,171 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:21,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:21,172 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 15:11:21,173 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 15:11:22,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:11:22,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:22,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 63 conjunts are in the unsatisfiable core [2021-10-07 15:11:22,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:22,399 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 138 treesize of output 134 [2021-10-07 15:11:22,593 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 13 treesize of output 9 [2021-10-07 15:11:22,658 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 15:11:22,823 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:11:22,824 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 15:11:23,290 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 15:11:23,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518427996] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:23,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:23,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-07 15:11:23,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181089654] [2021-10-07 15:11:23,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:11:23,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:23,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:11:23,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:11:23,293 INFO L87 Difference]: Start difference. First operand 277 states and 663 transitions. Second operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:25,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:25,002 INFO L93 Difference]: Finished difference Result 319 states and 736 transitions. [2021-10-07 15:11:25,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:11:25,003 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:11:25,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:25,005 INFO L225 Difference]: With dead ends: 319 [2021-10-07 15:11:25,005 INFO L226 Difference]: Without dead ends: 319 [2021-10-07 15:11:25,006 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 2041.1ms TimeCoverageRelationStatistics Valid=203, Invalid=1203, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 15:11:25,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-10-07 15:11:25,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 267. [2021-10-07 15:11:25,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 264 states have (on average 2.4356060606060606) internal successors, (643), 266 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:25,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 643 transitions. [2021-10-07 15:11:25,011 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 643 transitions. Word has length 16 [2021-10-07 15:11:25,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:25,012 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 643 transitions. [2021-10-07 15:11:25,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:25,012 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 643 transitions. [2021-10-07 15:11:25,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:11:25,012 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:25,013 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:25,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2021-10-07 15:11:25,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:25,214 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:11:25,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:25,214 INFO L82 PathProgramCache]: Analyzing trace with hash 57651958, now seen corresponding path program 9 times [2021-10-07 15:11:25,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:25,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780820215] [2021-10-07 15:11:25,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:25,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:25,612 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 15:11:25,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:25,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780820215] [2021-10-07 15:11:25,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780820215] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:25,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35513191] [2021-10-07 15:11:25,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:11:25,613 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:25,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:25,614 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 15:11:25,629 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 15:11:26,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:11:26,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:26,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-07 15:11:26,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:27,026 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:11:27,027 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 15:11:27,118 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 15:11:27,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35513191] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:27,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:27,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 19 [2021-10-07 15:11:27,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277004136] [2021-10-07 15:11:27,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 15:11:27,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:27,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 15:11:27,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:11:27,120 INFO L87 Difference]: Start difference. First operand 267 states and 643 transitions. Second operand has 21 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:28,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:28,064 INFO L93 Difference]: Finished difference Result 359 states and 769 transitions. [2021-10-07 15:11:28,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:11:28,064 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:11:28,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:28,068 INFO L225 Difference]: With dead ends: 359 [2021-10-07 15:11:28,068 INFO L226 Difference]: Without dead ends: 341 [2021-10-07 15:11:28,068 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 785.1ms TimeCoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:11:28,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-10-07 15:11:28,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 258. [2021-10-07 15:11:28,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 255 states have (on average 2.458823529411765) internal successors, (627), 257 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:28,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 627 transitions. [2021-10-07 15:11:28,074 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 627 transitions. Word has length 16 [2021-10-07 15:11:28,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:28,075 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 627 transitions. [2021-10-07 15:11:28,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:28,075 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 627 transitions. [2021-10-07 15:11:28,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:11:28,075 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:28,075 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:28,103 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 15:11:28,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:28,276 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:11:28,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:28,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1785012497, now seen corresponding path program 21 times [2021-10-07 15:11:28,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:28,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294141786] [2021-10-07 15:11:28,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:28,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:29,314 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 15:11:29,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:29,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294141786] [2021-10-07 15:11:29,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294141786] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:29,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83958053] [2021-10-07 15:11:29,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:11:29,316 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:29,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:29,319 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 15:11:29,326 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 15:11:30,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:11:30,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:30,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-07 15:11:30,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:30,769 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 15:11:30,835 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 15:11:31,076 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-07 15:11:31,076 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 40 treesize of output 42 [2021-10-07 15:11:31,416 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 15:11:31,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83958053] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:31,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:31,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-07 15:11:31,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272020380] [2021-10-07 15:11:31,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:11:31,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:31,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:11:31,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:11:31,418 INFO L87 Difference]: Start difference. First operand 258 states and 627 transitions. Second operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:32,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:32,787 INFO L93 Difference]: Finished difference Result 264 states and 634 transitions. [2021-10-07 15:11:32,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:11:32,788 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:11:32,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:32,789 INFO L225 Difference]: With dead ends: 264 [2021-10-07 15:11:32,789 INFO L226 Difference]: Without dead ends: 260 [2021-10-07 15:11:32,789 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1848.2ms TimeCoverageRelationStatistics Valid=158, Invalid=1174, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 15:11:32,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-10-07 15:11:32,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 256. [2021-10-07 15:11:32,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 253 states have (on average 2.458498023715415) internal successors, (622), 255 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:32,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 622 transitions. [2021-10-07 15:11:32,795 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 622 transitions. Word has length 16 [2021-10-07 15:11:32,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:32,795 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 622 transitions. [2021-10-07 15:11:32,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:32,796 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 622 transitions. [2021-10-07 15:11:32,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:11:32,796 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:32,796 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:32,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:33,000 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,SelfDestructingSolverStorable75 [2021-10-07 15:11:33,001 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:11:33,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:33,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1785029237, now seen corresponding path program 22 times [2021-10-07 15:11:33,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:33,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12483443] [2021-10-07 15:11:33,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:33,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:33,906 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 15:11:33,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:33,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12483443] [2021-10-07 15:11:33,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12483443] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:33,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892090857] [2021-10-07 15:11:33,907 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:11:33,907 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:33,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:33,908 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 15:11:33,909 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 15:11:35,187 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:11:35,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:35,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 59 conjunts are in the unsatisfiable core [2021-10-07 15:11:35,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:35,205 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 47 treesize of output 45 [2021-10-07 15:11:35,344 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 13 treesize of output 9 [2021-10-07 15:11:35,403 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 13 treesize of output 9 [2021-10-07 15:11:35,469 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 15:11:35,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:11:35,732 INFO L354 Elim1Store]: treesize reduction 75, result has 24.2 percent of original size [2021-10-07 15:11:35,733 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 15:11:36,094 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 15:11:36,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892090857] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:36,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:36,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-07 15:11:36,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369749480] [2021-10-07 15:11:36,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:11:36,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:36,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:11:36,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:11:36,097 INFO L87 Difference]: Start difference. First operand 256 states and 622 transitions. Second operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:37,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:37,099 INFO L93 Difference]: Finished difference Result 265 states and 633 transitions. [2021-10-07 15:11:37,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:11:37,099 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:11:37,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:37,101 INFO L225 Difference]: With dead ends: 265 [2021-10-07 15:11:37,101 INFO L226 Difference]: Without dead ends: 259 [2021-10-07 15:11:37,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1467.1ms TimeCoverageRelationStatistics Valid=158, Invalid=1102, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 15:11:37,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-10-07 15:11:37,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 250. [2021-10-07 15:11:37,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 247 states have (on average 2.473684210526316) internal successors, (611), 249 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:37,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 611 transitions. [2021-10-07 15:11:37,113 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 611 transitions. Word has length 16 [2021-10-07 15:11:37,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:37,113 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 611 transitions. [2021-10-07 15:11:37,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:37,114 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 611 transitions. [2021-10-07 15:11:37,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:11:37,114 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:37,114 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:37,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:37,329 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,SelfDestructingSolverStorable76 [2021-10-07 15:11:37,330 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:11:37,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:37,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1785548177, now seen corresponding path program 23 times [2021-10-07 15:11:37,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:37,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974438766] [2021-10-07 15:11:37,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:37,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:37,990 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 15:11:37,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:37,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974438766] [2021-10-07 15:11:37,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974438766] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:37,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688390749] [2021-10-07 15:11:37,991 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:11:37,991 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:37,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:37,995 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 15:11:38,012 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 15:11:39,307 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:11:39,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:39,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-07 15:11:39,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:39,320 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 150 treesize of output 142 [2021-10-07 15:11:39,508 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 15:11:39,569 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 15:11:39,814 INFO L354 Elim1Store]: treesize reduction 88, result has 20.7 percent of original size [2021-10-07 15:11:39,815 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 48 treesize of output 50 [2021-10-07 15:11:40,322 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 15:11:40,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688390749] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:40,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:40,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-07 15:11:40,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85322019] [2021-10-07 15:11:40,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:11:40,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:40,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:11:40,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:11:40,324 INFO L87 Difference]: Start difference. First operand 250 states and 611 transitions. Second operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:41,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:41,410 INFO L93 Difference]: Finished difference Result 260 states and 626 transitions. [2021-10-07 15:11:41,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 15:11:41,411 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:11:41,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:41,412 INFO L225 Difference]: With dead ends: 260 [2021-10-07 15:11:41,412 INFO L226 Difference]: Without dead ends: 260 [2021-10-07 15:11:41,413 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1366.0ms TimeCoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 15:11:41,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-10-07 15:11:41,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 242. [2021-10-07 15:11:41,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 239 states have (on average 2.497907949790795) internal successors, (597), 241 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:41,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 597 transitions. [2021-10-07 15:11:41,417 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 597 transitions. Word has length 16 [2021-10-07 15:11:41,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:41,417 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 597 transitions. [2021-10-07 15:11:41,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:41,417 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 597 transitions. [2021-10-07 15:11:41,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:11:41,418 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:41,418 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:41,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2021-10-07 15:11:41,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:41,619 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:11:41,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:41,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1135853090, now seen corresponding path program 24 times [2021-10-07 15:11:41,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:41,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412435482] [2021-10-07 15:11:41,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:41,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:42,454 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 15:11:42,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:42,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412435482] [2021-10-07 15:11:42,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412435482] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:42,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56168330] [2021-10-07 15:11:42,455 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:11:42,456 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:42,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:42,457 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 15:11:42,457 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 15:11:43,827 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:11:43,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:43,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-07 15:11:43,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:44,261 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:11:44,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56168330] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:44,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:44,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 21 [2021-10-07 15:11:44,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798941018] [2021-10-07 15:11:44,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:11:44,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:44,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:11:44,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:11:44,263 INFO L87 Difference]: Start difference. First operand 242 states and 597 transitions. Second operand has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 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 15:11:45,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:45,231 INFO L93 Difference]: Finished difference Result 411 states and 972 transitions. [2021-10-07 15:11:45,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:11:45,232 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 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 15:11:45,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:45,233 INFO L225 Difference]: With dead ends: 411 [2021-10-07 15:11:45,233 INFO L226 Difference]: Without dead ends: 411 [2021-10-07 15:11:45,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1095.4ms TimeCoverageRelationStatistics Valid=114, Invalid=878, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:11:45,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2021-10-07 15:11:45,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 240. [2021-10-07 15:11:45,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 237 states have (on average 2.49789029535865) internal successors, (592), 239 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:45,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 592 transitions. [2021-10-07 15:11:45,238 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 592 transitions. Word has length 17 [2021-10-07 15:11:45,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:45,238 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 592 transitions. [2021-10-07 15:11:45,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 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 15:11:45,238 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 592 transitions. [2021-10-07 15:11:45,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:11:45,239 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:45,239 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:45,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2021-10-07 15:11:45,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-10-07 15:11:45,440 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:11:45,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:45,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1119276825, now seen corresponding path program 14 times [2021-10-07 15:11:45,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:45,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397603349] [2021-10-07 15:11:45,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:45,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:46,088 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 15:11:46,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:46,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397603349] [2021-10-07 15:11:46,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397603349] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:46,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003162140] [2021-10-07 15:11:46,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:11:46,089 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:46,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:46,090 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 15:11:46,109 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 15:11:47,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:11:47,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:47,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-07 15:11:47,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:47,725 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:11:47,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003162140] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:47,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:47,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 20 [2021-10-07 15:11:47,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033588547] [2021-10-07 15:11:47,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 15:11:47,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:47,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 15:11:47,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:11:47,727 INFO L87 Difference]: Start difference. First operand 240 states and 592 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 15:11:48,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:48,460 INFO L93 Difference]: Finished difference Result 380 states and 824 transitions. [2021-10-07 15:11:48,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:11:48,460 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 17 [2021-10-07 15:11:48,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:48,462 INFO L225 Difference]: With dead ends: 380 [2021-10-07 15:11:48,462 INFO L226 Difference]: Without dead ends: 338 [2021-10-07 15:11:48,462 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 857.6ms TimeCoverageRelationStatistics Valid=109, Invalid=821, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:11:48,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-10-07 15:11:48,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 232. [2021-10-07 15:11:48,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 229 states have (on average 2.4192139737991267) internal successors, (554), 231 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:48,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 554 transitions. [2021-10-07 15:11:48,469 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 554 transitions. Word has length 17 [2021-10-07 15:11:48,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:48,470 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 554 transitions. [2021-10-07 15:11:48,470 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 15:11:48,470 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 554 transitions. [2021-10-07 15:11:48,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:11:48,470 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:48,471 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:48,501 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 15:11:48,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-10-07 15:11:48,678 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:11:48,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:48,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1119782745, now seen corresponding path program 15 times [2021-10-07 15:11:48,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:48,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404574149] [2021-10-07 15:11:48,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:48,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:48,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:49,047 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 15:11:49,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:49,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404574149] [2021-10-07 15:11:49,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404574149] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:49,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787649638] [2021-10-07 15:11:49,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:11:49,048 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:49,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:49,050 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 15:11:49,050 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 15:11:50,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:11:50,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:50,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-07 15:11:50,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:50,644 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:11:50,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787649638] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:50,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:50,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 19 [2021-10-07 15:11:50,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837647840] [2021-10-07 15:11:50,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 15:11:50,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:50,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 15:11:50,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:11:50,646 INFO L87 Difference]: Start difference. First operand 232 states and 554 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 15:11:51,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:51,298 INFO L93 Difference]: Finished difference Result 372 states and 833 transitions. [2021-10-07 15:11:51,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 15:11:51,299 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 17 [2021-10-07 15:11:51,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:51,300 INFO L225 Difference]: With dead ends: 372 [2021-10-07 15:11:51,300 INFO L226 Difference]: Without dead ends: 372 [2021-10-07 15:11:51,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 784.8ms TimeCoverageRelationStatistics Valid=159, Invalid=897, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 15:11:51,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-10-07 15:11:51,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 232. [2021-10-07 15:11:51,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 229 states have (on average 2.4192139737991267) internal successors, (554), 231 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:51,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 554 transitions. [2021-10-07 15:11:51,305 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 554 transitions. Word has length 17 [2021-10-07 15:11:51,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:51,305 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 554 transitions. [2021-10-07 15:11:51,305 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 15:11:51,305 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 554 transitions. [2021-10-07 15:11:51,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:11:51,306 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:51,306 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:51,334 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 15:11:51,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:51,507 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:11:51,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:51,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1119782721, now seen corresponding path program 10 times [2021-10-07 15:11:51,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:51,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791808741] [2021-10-07 15:11:51,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:51,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:52,257 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 15:11:52,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:52,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791808741] [2021-10-07 15:11:52,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791808741] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:52,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426559064] [2021-10-07 15:11:52,263 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:11:52,263 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:52,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:52,266 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 15:11:52,281 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 15:11:53,662 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:11:53,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:53,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-07 15:11:53,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:53,906 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:11:53,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426559064] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:53,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:53,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 19 [2021-10-07 15:11:53,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635160701] [2021-10-07 15:11:53,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 15:11:53,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:53,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 15:11:53,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:11:53,908 INFO L87 Difference]: Start difference. First operand 232 states and 554 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 15:11:54,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:54,856 INFO L93 Difference]: Finished difference Result 312 states and 695 transitions. [2021-10-07 15:11:54,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 15:11:54,857 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 17 [2021-10-07 15:11:54,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:54,858 INFO L225 Difference]: With dead ends: 312 [2021-10-07 15:11:54,858 INFO L226 Difference]: Without dead ends: 304 [2021-10-07 15:11:54,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1086.1ms TimeCoverageRelationStatistics Valid=166, Invalid=956, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 15:11:54,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-10-07 15:11:54,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 232. [2021-10-07 15:11:54,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 229 states have (on average 2.410480349344978) internal successors, (552), 231 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:54,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 552 transitions. [2021-10-07 15:11:54,863 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 552 transitions. Word has length 17 [2021-10-07 15:11:54,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:54,863 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 552 transitions. [2021-10-07 15:11:54,863 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 15:11:54,863 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 552 transitions. [2021-10-07 15:11:54,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:11:54,863 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:54,864 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:54,892 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 15:11:55,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:55,064 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:11:55,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:55,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1119782714, now seen corresponding path program 15 times [2021-10-07 15:11:55,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:55,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793402663] [2021-10-07 15:11:55,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:55,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:11:56,427 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 15:11:56,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:11:56,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793402663] [2021-10-07 15:11:56,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793402663] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:56,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649328277] [2021-10-07 15:11:56,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:11:56,428 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:56,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:11:56,429 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 15:11:56,430 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 15:11:57,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:11:57,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:11:57,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-07 15:11:57,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:11:58,149 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:11:58,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649328277] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:11:58,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:11:58,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 20 [2021-10-07 15:11:58,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945967258] [2021-10-07 15:11:58,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 15:11:58,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:11:58,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 15:11:58,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:11:58,151 INFO L87 Difference]: Start difference. First operand 232 states and 552 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 15:11:59,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:11:59,560 INFO L93 Difference]: Finished difference Result 449 states and 1021 transitions. [2021-10-07 15:11:59,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:11:59,561 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 17 [2021-10-07 15:11:59,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:11:59,562 INFO L225 Difference]: With dead ends: 449 [2021-10-07 15:11:59,562 INFO L226 Difference]: Without dead ends: 449 [2021-10-07 15:11:59,563 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1654.1ms TimeCoverageRelationStatistics Valid=207, Invalid=1199, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 15:11:59,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-10-07 15:11:59,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 208. [2021-10-07 15:11:59,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 205 states have (on average 2.2487804878048783) internal successors, (461), 207 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:11:59,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 461 transitions. [2021-10-07 15:11:59,569 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 461 transitions. Word has length 17 [2021-10-07 15:11:59,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:11:59,569 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 461 transitions. [2021-10-07 15:11:59,569 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 15:11:59,570 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 461 transitions. [2021-10-07 15:11:59,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:11:59,570 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:11:59,570 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:11:59,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2021-10-07 15:11:59,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:11:59,784 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:11:59,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:11:59,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1119782690, now seen corresponding path program 25 times [2021-10-07 15:11:59,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:11:59,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851149884] [2021-10-07 15:11:59,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:11:59,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:11:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:00,919 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 15:12:00,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:00,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851149884] [2021-10-07 15:12:00,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851149884] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:00,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888809622] [2021-10-07 15:12:00,921 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:12:00,921 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:00,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:00,922 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 15:12:00,940 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 15:12:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:02,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-07 15:12:02,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:02,749 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:12:02,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888809622] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:02,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:02,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 21 [2021-10-07 15:12:02,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826408382] [2021-10-07 15:12:02,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:12:02,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:02,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:12:02,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:12:02,751 INFO L87 Difference]: Start difference. First operand 208 states and 461 transitions. Second operand has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 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 15:12:03,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:03,986 INFO L93 Difference]: Finished difference Result 334 states and 728 transitions. [2021-10-07 15:12:03,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:12:03,987 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 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 15:12:03,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:03,988 INFO L225 Difference]: With dead ends: 334 [2021-10-07 15:12:03,988 INFO L226 Difference]: Without dead ends: 326 [2021-10-07 15:12:03,988 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1393.8ms TimeCoverageRelationStatistics Valid=161, Invalid=1099, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 15:12:03,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-10-07 15:12:03,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 210. [2021-10-07 15:12:03,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 207 states have (on average 2.251207729468599) internal successors, (466), 209 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:03,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 466 transitions. [2021-10-07 15:12:03,992 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 466 transitions. Word has length 17 [2021-10-07 15:12:03,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:03,992 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 466 transitions. [2021-10-07 15:12:03,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 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 15:12:03,992 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 466 transitions. [2021-10-07 15:12:03,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:12:03,993 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:03,993 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:04,022 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 15:12:04,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:04,194 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:12:04,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:04,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1119765950, now seen corresponding path program 26 times [2021-10-07 15:12:04,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:04,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076735769] [2021-10-07 15:12:04,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:04,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:05,131 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 15:12:05,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:05,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076735769] [2021-10-07 15:12:05,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076735769] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:05,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100300028] [2021-10-07 15:12:05,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:12:05,132 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:05,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:05,133 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 15:12:05,134 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 15:12:06,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:12:06,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:06,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-07 15:12:06,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:06,971 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:12:06,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100300028] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:06,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:06,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 21 [2021-10-07 15:12:06,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31393494] [2021-10-07 15:12:06,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:12:06,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:06,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:12:06,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:12:06,974 INFO L87 Difference]: Start difference. First operand 210 states and 466 transitions. Second operand has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 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 15:12:08,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:08,011 INFO L93 Difference]: Finished difference Result 350 states and 768 transitions. [2021-10-07 15:12:08,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:12:08,012 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 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 15:12:08,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:08,013 INFO L225 Difference]: With dead ends: 350 [2021-10-07 15:12:08,013 INFO L226 Difference]: Without dead ends: 334 [2021-10-07 15:12:08,014 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1165.7ms TimeCoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:12:08,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-10-07 15:12:08,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 208. [2021-10-07 15:12:08,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 205 states have (on average 2.2487804878048783) internal successors, (461), 207 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:08,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 461 transitions. [2021-10-07 15:12:08,019 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 461 transitions. Word has length 17 [2021-10-07 15:12:08,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:08,019 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 461 transitions. [2021-10-07 15:12:08,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 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 15:12:08,019 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 461 transitions. [2021-10-07 15:12:08,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:12:08,020 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:08,020 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:08,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2021-10-07 15:12:08,221 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,SelfDestructingSolverStorable84 [2021-10-07 15:12:08,222 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:12:08,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:08,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1119247034, now seen corresponding path program 16 times [2021-10-07 15:12:08,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:08,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147056189] [2021-10-07 15:12:08,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:08,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:08,698 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 15:12:08,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:08,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147056189] [2021-10-07 15:12:08,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147056189] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:08,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111701069] [2021-10-07 15:12:08,699 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:12:08,699 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:08,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:08,700 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 15:12:08,722 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 15:12:10,120 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:12:10,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:10,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-07 15:12:10,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:10,378 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:12:10,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111701069] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:10,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:10,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 20 [2021-10-07 15:12:10,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194158020] [2021-10-07 15:12:10,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 15:12:10,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:10,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 15:12:10,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:12:10,381 INFO L87 Difference]: Start difference. First operand 208 states and 461 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 15:12:11,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:11,420 INFO L93 Difference]: Finished difference Result 470 states and 1019 transitions. [2021-10-07 15:12:11,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:12:11,421 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 17 [2021-10-07 15:12:11,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:11,423 INFO L225 Difference]: With dead ends: 470 [2021-10-07 15:12:11,423 INFO L226 Difference]: Without dead ends: 470 [2021-10-07 15:12:11,423 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 803.7ms TimeCoverageRelationStatistics Valid=136, Invalid=1054, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 15:12:11,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-10-07 15:12:11,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 222. [2021-10-07 15:12:11,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 219 states have (on average 2.2511415525114153) internal successors, (493), 221 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:11,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 493 transitions. [2021-10-07 15:12:11,429 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 493 transitions. Word has length 17 [2021-10-07 15:12:11,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:11,430 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 493 transitions. [2021-10-07 15:12:11,430 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 15:12:11,430 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 493 transitions. [2021-10-07 15:12:11,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:12:11,431 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:11,431 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:11,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2021-10-07 15:12:11,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:11,632 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:12:11,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:11,633 INFO L82 PathProgramCache]: Analyzing trace with hash 437160780, now seen corresponding path program 27 times [2021-10-07 15:12:11,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:11,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123406518] [2021-10-07 15:12:11,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:11,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:12,628 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 15:12:12,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:12,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123406518] [2021-10-07 15:12:12,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123406518] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:12,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592008835] [2021-10-07 15:12:12,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:12:12,630 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:12,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:12,631 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 15:12:12,633 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 15:12:14,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:12:14,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:14,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-07 15:12:14,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:14,401 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:12:14,402 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 15:12:14,751 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:12:14,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592008835] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:14,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:14,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 24 [2021-10-07 15:12:14,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615722462] [2021-10-07 15:12:14,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 15:12:14,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:14,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 15:12:14,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:12:14,754 INFO L87 Difference]: Start difference. First operand 222 states and 493 transitions. Second operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 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 15:12:16,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:16,284 INFO L93 Difference]: Finished difference Result 399 states and 875 transitions. [2021-10-07 15:12:16,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:12:16,284 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 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 15:12:16,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:16,286 INFO L225 Difference]: With dead ends: 399 [2021-10-07 15:12:16,286 INFO L226 Difference]: Without dead ends: 391 [2021-10-07 15:12:16,286 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1856.2ms TimeCoverageRelationStatistics Valid=207, Invalid=1515, Unknown=0, NotChecked=0, Total=1722 [2021-10-07 15:12:16,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-10-07 15:12:16,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 228. [2021-10-07 15:12:16,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 225 states have (on average 2.2488888888888887) internal successors, (506), 227 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:16,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 506 transitions. [2021-10-07 15:12:16,291 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 506 transitions. Word has length 17 [2021-10-07 15:12:16,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:16,291 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 506 transitions. [2021-10-07 15:12:16,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 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 15:12:16,291 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 506 transitions. [2021-10-07 15:12:16,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:12:16,292 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:16,292 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:16,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2021-10-07 15:12:16,492 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,SelfDestructingSolverStorable86 [2021-10-07 15:12:16,493 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:12:16,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:16,494 INFO L82 PathProgramCache]: Analyzing trace with hash 437144040, now seen corresponding path program 28 times [2021-10-07 15:12:16,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:16,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370458101] [2021-10-07 15:12:16,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:16,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:17,403 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 15:12:17,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:17,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370458101] [2021-10-07 15:12:17,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370458101] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:17,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134777055] [2021-10-07 15:12:17,404 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:12:17,404 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:17,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:17,410 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 15:12:17,410 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 15:12:18,906 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:12:18,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:18,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-07 15:12:18,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:18,924 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 47 treesize of output 45 [2021-10-07 15:12:19,200 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:12:19,201 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 15:12:19,491 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:12:19,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134777055] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:19,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:19,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 23 [2021-10-07 15:12:19,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875631964] [2021-10-07 15:12:19,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:12:19,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:19,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:12:19,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:12:19,493 INFO L87 Difference]: Start difference. First operand 228 states and 506 transitions. Second operand has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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 15:12:20,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:20,669 INFO L93 Difference]: Finished difference Result 481 states and 1073 transitions. [2021-10-07 15:12:20,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:12:20,669 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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 15:12:20,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:20,670 INFO L225 Difference]: With dead ends: 481 [2021-10-07 15:12:20,670 INFO L226 Difference]: Without dead ends: 465 [2021-10-07 15:12:20,671 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1338.4ms TimeCoverageRelationStatistics Valid=162, Invalid=1244, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 15:12:20,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2021-10-07 15:12:20,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 224. [2021-10-07 15:12:20,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 221 states have (on average 2.253393665158371) internal successors, (498), 223 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:20,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 498 transitions. [2021-10-07 15:12:20,676 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 498 transitions. Word has length 17 [2021-10-07 15:12:20,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:20,676 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 498 transitions. [2021-10-07 15:12:20,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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 15:12:20,676 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 498 transitions. [2021-10-07 15:12:20,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:12:20,677 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:20,677 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:20,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2021-10-07 15:12:20,878 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,SelfDestructingSolverStorable87 [2021-10-07 15:12:20,878 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:12:20,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:20,879 INFO L82 PathProgramCache]: Analyzing trace with hash 421073640, now seen corresponding path program 29 times [2021-10-07 15:12:20,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:20,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157241752] [2021-10-07 15:12:20,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:20,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:22,144 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 15:12:22,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:22,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157241752] [2021-10-07 15:12:22,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157241752] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:22,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512473440] [2021-10-07 15:12:22,145 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:12:22,146 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:22,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:22,147 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 15:12:22,158 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 15:12:23,647 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:12:23,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:23,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-07 15:12:23,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:23,660 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 75 treesize of output 71 [2021-10-07 15:12:23,967 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:12:23,967 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 15:12:24,271 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:12:24,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512473440] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:24,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:24,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 23 [2021-10-07 15:12:24,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378378418] [2021-10-07 15:12:24,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:12:24,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:24,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:12:24,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:12:24,273 INFO L87 Difference]: Start difference. First operand 224 states and 498 transitions. Second operand has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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 15:12:25,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:25,583 INFO L93 Difference]: Finished difference Result 404 states and 891 transitions. [2021-10-07 15:12:25,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:12:25,584 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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 15:12:25,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:25,585 INFO L225 Difference]: With dead ends: 404 [2021-10-07 15:12:25,585 INFO L226 Difference]: Without dead ends: 396 [2021-10-07 15:12:25,585 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1731.4ms TimeCoverageRelationStatistics Valid=182, Invalid=1300, Unknown=0, NotChecked=0, Total=1482 [2021-10-07 15:12:25,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-10-07 15:12:25,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 231. [2021-10-07 15:12:25,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 228 states have (on average 2.258771929824561) internal successors, (515), 230 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:25,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 515 transitions. [2021-10-07 15:12:25,590 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 515 transitions. Word has length 17 [2021-10-07 15:12:25,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:25,591 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 515 transitions. [2021-10-07 15:12:25,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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 15:12:25,591 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 515 transitions. [2021-10-07 15:12:25,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:12:25,591 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:25,591 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:25,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2021-10-07 15:12:25,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:25,792 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:12:25,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:25,793 INFO L82 PathProgramCache]: Analyzing trace with hash 421056900, now seen corresponding path program 30 times [2021-10-07 15:12:25,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:25,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333999952] [2021-10-07 15:12:25,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:25,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:27,201 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 15:12:27,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:27,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333999952] [2021-10-07 15:12:27,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333999952] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:27,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125832882] [2021-10-07 15:12:27,202 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:12:27,203 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:27,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:27,204 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 15:12:27,205 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 15:12:28,759 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:12:28,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:28,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-07 15:12:28,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:28,769 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 137 [2021-10-07 15:12:29,074 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:12:29,075 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 15:12:29,388 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:12:29,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125832882] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:29,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:29,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 23 [2021-10-07 15:12:29,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812608364] [2021-10-07 15:12:29,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:12:29,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:29,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:12:29,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:12:29,390 INFO L87 Difference]: Start difference. First operand 231 states and 515 transitions. Second operand has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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 15:12:30,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:30,678 INFO L93 Difference]: Finished difference Result 456 states and 1019 transitions. [2021-10-07 15:12:30,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:12:30,679 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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 15:12:30,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:30,681 INFO L225 Difference]: With dead ends: 456 [2021-10-07 15:12:30,681 INFO L226 Difference]: Without dead ends: 440 [2021-10-07 15:12:30,682 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1678.4ms TimeCoverageRelationStatistics Valid=164, Invalid=1242, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 15:12:30,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-10-07 15:12:30,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 229. [2021-10-07 15:12:30,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 226 states have (on average 2.256637168141593) internal successors, (510), 228 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:30,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 510 transitions. [2021-10-07 15:12:30,686 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 510 transitions. Word has length 17 [2021-10-07 15:12:30,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:30,687 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 510 transitions. [2021-10-07 15:12:30,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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 15:12:30,687 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 510 transitions. [2021-10-07 15:12:30,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:12:30,687 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:30,687 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:30,716 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 15:12:30,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:30,888 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:12:30,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:30,889 INFO L82 PathProgramCache]: Analyzing trace with hash 420537960, now seen corresponding path program 31 times [2021-10-07 15:12:30,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:30,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938113105] [2021-10-07 15:12:30,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:30,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:32,481 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 15:12:32,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:32,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938113105] [2021-10-07 15:12:32,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938113105] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:32,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506457974] [2021-10-07 15:12:32,482 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:12:32,482 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:32,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:32,483 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 15:12:32,489 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 15:12:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:34,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-07 15:12:34,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:34,043 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 75 treesize of output 71 [2021-10-07 15:12:34,341 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:12:34,342 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 15:12:34,651 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:12:34,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506457974] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:34,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:34,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 23 [2021-10-07 15:12:34,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586361047] [2021-10-07 15:12:34,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:12:34,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:34,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:12:34,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:12:34,653 INFO L87 Difference]: Start difference. First operand 229 states and 510 transitions. Second operand has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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 15:12:36,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:36,048 INFO L93 Difference]: Finished difference Result 382 states and 850 transitions. [2021-10-07 15:12:36,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:12:36,048 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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 15:12:36,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:36,050 INFO L225 Difference]: With dead ends: 382 [2021-10-07 15:12:36,050 INFO L226 Difference]: Without dead ends: 382 [2021-10-07 15:12:36,050 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1731.9ms TimeCoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 15:12:36,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-10-07 15:12:36,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 219. [2021-10-07 15:12:36,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 216 states have (on average 2.25) internal successors, (486), 218 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:36,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 486 transitions. [2021-10-07 15:12:36,055 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 486 transitions. Word has length 17 [2021-10-07 15:12:36,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:36,055 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 486 transitions. [2021-10-07 15:12:36,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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 15:12:36,055 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 486 transitions. [2021-10-07 15:12:36,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:12:36,056 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:36,056 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:36,085 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 15:12:36,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:36,257 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:12:36,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:36,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1825557121, now seen corresponding path program 16 times [2021-10-07 15:12:36,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:36,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566126163] [2021-10-07 15:12:36,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:36,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:37,299 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 15:12:37,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:37,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566126163] [2021-10-07 15:12:37,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566126163] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:37,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348537945] [2021-10-07 15:12:37,300 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:12:37,300 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:37,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:37,302 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 15:12:37,303 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 15:12:38,858 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:12:38,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:38,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-07 15:12:38,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:38,866 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 47 treesize of output 45 [2021-10-07 15:12:39,197 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:12:39,197 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 15:12:39,311 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:12:39,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348537945] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:39,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:39,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 23 [2021-10-07 15:12:39,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324408308] [2021-10-07 15:12:39,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:12:39,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:39,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:12:39,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:12:39,313 INFO L87 Difference]: Start difference. First operand 219 states and 486 transitions. Second operand has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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 15:12:40,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:40,583 INFO L93 Difference]: Finished difference Result 329 states and 685 transitions. [2021-10-07 15:12:40,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:12:40,584 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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 15:12:40,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:40,585 INFO L225 Difference]: With dead ends: 329 [2021-10-07 15:12:40,585 INFO L226 Difference]: Without dead ends: 293 [2021-10-07 15:12:40,586 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1479.0ms TimeCoverageRelationStatistics Valid=165, Invalid=1317, Unknown=0, NotChecked=0, Total=1482 [2021-10-07 15:12:40,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-10-07 15:12:40,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 201. [2021-10-07 15:12:40,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 198 states have (on average 2.297979797979798) internal successors, (455), 200 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:40,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 455 transitions. [2021-10-07 15:12:40,591 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 455 transitions. Word has length 17 [2021-10-07 15:12:40,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:40,591 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 455 transitions. [2021-10-07 15:12:40,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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 15:12:40,591 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 455 transitions. [2021-10-07 15:12:40,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:12:40,591 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:40,591 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:40,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2021-10-07 15:12:40,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:40,792 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:12:40,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:40,793 INFO L82 PathProgramCache]: Analyzing trace with hash -17107358, now seen corresponding path program 32 times [2021-10-07 15:12:40,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:40,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417251777] [2021-10-07 15:12:40,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:40,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:41,878 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 15:12:41,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:41,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417251777] [2021-10-07 15:12:41,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417251777] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:41,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208382471] [2021-10-07 15:12:41,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:12:41,879 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:41,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:41,880 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 15:12:41,881 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 15:12:43,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:12:43,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:43,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-07 15:12:43,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:43,519 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 75 treesize of output 71 [2021-10-07 15:12:43,913 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-07 15:12:43,913 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 15:12:44,184 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:12:44,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208382471] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:44,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:44,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 23 [2021-10-07 15:12:44,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741919601] [2021-10-07 15:12:44,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:12:44,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:44,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:12:44,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:12:44,187 INFO L87 Difference]: Start difference. First operand 201 states and 455 transitions. Second operand has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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 15:12:45,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:45,738 INFO L93 Difference]: Finished difference Result 367 states and 817 transitions. [2021-10-07 15:12:45,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:12:45,739 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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 15:12:45,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:45,740 INFO L225 Difference]: With dead ends: 367 [2021-10-07 15:12:45,740 INFO L226 Difference]: Without dead ends: 359 [2021-10-07 15:12:45,741 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1967.9ms TimeCoverageRelationStatistics Valid=174, Invalid=1308, Unknown=0, NotChecked=0, Total=1482 [2021-10-07 15:12:45,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-10-07 15:12:45,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 205. [2021-10-07 15:12:45,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 202 states have (on average 2.301980198019802) internal successors, (465), 204 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:45,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 465 transitions. [2021-10-07 15:12:45,746 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 465 transitions. Word has length 17 [2021-10-07 15:12:45,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:45,746 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 465 transitions. [2021-10-07 15:12:45,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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 15:12:45,747 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 465 transitions. [2021-10-07 15:12:45,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:12:45,747 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:45,747 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:45,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2021-10-07 15:12:45,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,90 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:45,960 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:12:45,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:45,961 INFO L82 PathProgramCache]: Analyzing trace with hash -17124098, now seen corresponding path program 33 times [2021-10-07 15:12:45,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:45,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530119635] [2021-10-07 15:12:45,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:45,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:47,203 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 15:12:47,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:47,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530119635] [2021-10-07 15:12:47,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530119635] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:47,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018671170] [2021-10-07 15:12:47,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:12:47,205 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:47,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:47,206 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 15:12:47,207 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 15:12:48,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:12:48,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:48,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-07 15:12:48,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:48,828 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 47 treesize of output 45 [2021-10-07 15:12:49,106 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-07 15:12:49,107 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 15:12:49,420 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-07 15:12:49,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018671170] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:49,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:49,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 21 [2021-10-07 15:12:49,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325301971] [2021-10-07 15:12:49,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:12:49,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:49,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:12:49,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:12:49,423 INFO L87 Difference]: Start difference. First operand 205 states and 465 transitions. Second operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:50,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:50,835 INFO L93 Difference]: Finished difference Result 419 states and 945 transitions. [2021-10-07 15:12:50,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:12:50,836 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 15:12:50,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:50,837 INFO L225 Difference]: With dead ends: 419 [2021-10-07 15:12:50,837 INFO L226 Difference]: Without dead ends: 403 [2021-10-07 15:12:50,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1583.1ms TimeCoverageRelationStatistics Valid=179, Invalid=1227, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 15:12:50,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-10-07 15:12:50,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 203. [2021-10-07 15:12:50,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 200 states have (on average 2.3) internal successors, (460), 202 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:50,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 460 transitions. [2021-10-07 15:12:50,844 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 460 transitions. Word has length 17 [2021-10-07 15:12:50,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:50,844 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 460 transitions. [2021-10-07 15:12:50,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:50,845 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 460 transitions. [2021-10-07 15:12:50,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:12:50,845 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:50,846 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:50,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2021-10-07 15:12:51,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,91 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:51,057 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:12:51,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:51,058 INFO L82 PathProgramCache]: Analyzing trace with hash -17643038, now seen corresponding path program 34 times [2021-10-07 15:12:51,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:51,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122845550] [2021-10-07 15:12:51,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:51,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:52,350 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 15:12:52,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:52,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122845550] [2021-10-07 15:12:52,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122845550] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:52,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607291153] [2021-10-07 15:12:52,351 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:12:52,351 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:52,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:52,352 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 15:12:52,353 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 15:12:53,976 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:12:53,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:53,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-07 15:12:53,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:53,989 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 47 treesize of output 45 [2021-10-07 15:12:54,350 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-07 15:12:54,350 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 15:12:54,602 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:12:54,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607291153] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:54,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:54,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 23 [2021-10-07 15:12:54,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519456395] [2021-10-07 15:12:54,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:12:54,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:54,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:12:54,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:12:54,604 INFO L87 Difference]: Start difference. First operand 203 states and 460 transitions. Second operand has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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 15:12:55,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:12:55,745 INFO L93 Difference]: Finished difference Result 337 states and 758 transitions. [2021-10-07 15:12:55,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:12:55,746 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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 15:12:55,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:12:55,747 INFO L225 Difference]: With dead ends: 337 [2021-10-07 15:12:55,747 INFO L226 Difference]: Without dead ends: 337 [2021-10-07 15:12:55,747 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1605.9ms TimeCoverageRelationStatistics Valid=160, Invalid=1172, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 15:12:55,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-10-07 15:12:55,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 190. [2021-10-07 15:12:55,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 187 states have (on average 2.299465240641711) internal successors, (430), 189 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:12:55,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 430 transitions. [2021-10-07 15:12:55,751 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 430 transitions. Word has length 17 [2021-10-07 15:12:55,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:12:55,751 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 430 transitions. [2021-10-07 15:12:55,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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 15:12:55,752 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 430 transitions. [2021-10-07 15:12:55,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:12:55,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:12:55,752 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:12:55,781 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 15:12:55,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,92 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:55,954 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:12:55,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:12:55,955 INFO L82 PathProgramCache]: Analyzing trace with hash 938053440, now seen corresponding path program 17 times [2021-10-07 15:12:55,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:12:55,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640987918] [2021-10-07 15:12:55,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:12:55,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:12:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:12:57,200 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 15:12:57,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:12:57,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640987918] [2021-10-07 15:12:57,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640987918] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:57,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755821477] [2021-10-07 15:12:57,201 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:12:57,201 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:12:57,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:12:57,204 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 15:12:57,205 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 15:12:58,869 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:12:58,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:12:58,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-07 15:12:58,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:12:58,879 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 125 treesize of output 117 [2021-10-07 15:12:59,194 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:12:59,195 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 15:12:59,314 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:12:59,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755821477] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:12:59,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:12:59,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 23 [2021-10-07 15:12:59,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551685597] [2021-10-07 15:12:59,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:12:59,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:12:59,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:12:59,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:12:59,316 INFO L87 Difference]: Start difference. First operand 190 states and 430 transitions. Second operand has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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 15:13:01,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:01,131 INFO L93 Difference]: Finished difference Result 476 states and 1068 transitions. [2021-10-07 15:13:01,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 15:13:01,131 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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 15:13:01,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:01,133 INFO L225 Difference]: With dead ends: 476 [2021-10-07 15:13:01,133 INFO L226 Difference]: Without dead ends: 476 [2021-10-07 15:13:01,133 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 1976.6ms TimeCoverageRelationStatistics Valid=282, Invalid=2070, Unknown=0, NotChecked=0, Total=2352 [2021-10-07 15:13:01,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-10-07 15:13:01,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 190. [2021-10-07 15:13:01,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 187 states have (on average 2.299465240641711) internal successors, (430), 189 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:01,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 430 transitions. [2021-10-07 15:13:01,140 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 430 transitions. Word has length 17 [2021-10-07 15:13:01,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:01,140 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 430 transitions. [2021-10-07 15:13:01,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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 15:13:01,141 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 430 transitions. [2021-10-07 15:13:01,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:13:01,141 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:01,141 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:01,172 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 15:13:01,348 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,SelfDestructingSolverStorable95 [2021-10-07 15:13:01,349 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:13:01,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:01,349 INFO L82 PathProgramCache]: Analyzing trace with hash 938053416, now seen corresponding path program 35 times [2021-10-07 15:13:01,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:01,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038993612] [2021-10-07 15:13:01,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:01,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:02,766 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 15:13:02,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:02,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038993612] [2021-10-07 15:13:02,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038993612] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:02,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725266602] [2021-10-07 15:13:02,767 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:13:02,767 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:02,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:02,768 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 15:13:02,769 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 15:13:04,447 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:13:04,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:04,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-07 15:13:04,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:04,459 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 342 treesize of output 326 [2021-10-07 15:13:04,931 INFO L354 Elim1Store]: treesize reduction 166, result has 17.8 percent of original size [2021-10-07 15:13:04,931 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 51 treesize of output 56 [2021-10-07 15:13:05,142 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:13:05,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725266602] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:05,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:05,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 24 [2021-10-07 15:13:05,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220957936] [2021-10-07 15:13:05,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 15:13:05,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:05,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 15:13:05,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:13:05,144 INFO L87 Difference]: Start difference. First operand 190 states and 430 transitions. Second operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 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 15:13:06,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:06,966 INFO L93 Difference]: Finished difference Result 298 states and 675 transitions. [2021-10-07 15:13:06,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:13:06,967 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 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 15:13:06,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:06,968 INFO L225 Difference]: With dead ends: 298 [2021-10-07 15:13:06,968 INFO L226 Difference]: Without dead ends: 298 [2021-10-07 15:13:06,968 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 2195.6ms TimeCoverageRelationStatistics Valid=184, Invalid=1376, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 15:13:06,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-10-07 15:13:06,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 182. [2021-10-07 15:13:06,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 179 states have (on average 2.3016759776536313) internal successors, (412), 181 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:06,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 412 transitions. [2021-10-07 15:13:06,972 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 412 transitions. Word has length 17 [2021-10-07 15:13:06,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:06,972 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 412 transitions. [2021-10-07 15:13:06,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 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 15:13:06,973 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 412 transitions. [2021-10-07 15:13:06,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:13:06,973 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:06,973 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:07,002 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 15:13:07,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,94 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:07,174 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:13:07,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:07,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1366436246, now seen corresponding path program 36 times [2021-10-07 15:13:07,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:07,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595272107] [2021-10-07 15:13:07,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:07,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:07,378 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:07,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:07,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595272107] [2021-10-07 15:13:07,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595272107] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:07,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883742537] [2021-10-07 15:13:07,379 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:13:07,379 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:07,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:07,385 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 15:13:07,386 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 15:13:09,092 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:13:09,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:09,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 15:13:09,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:09,406 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:13:09,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883742537] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:09,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:09,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 21 [2021-10-07 15:13:09,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25895054] [2021-10-07 15:13:09,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:13:09,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:09,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:13:09,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:13:09,408 INFO L87 Difference]: Start difference. First operand 182 states and 412 transitions. Second operand has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 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 15:13:09,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:09,697 INFO L93 Difference]: Finished difference Result 180 states and 407 transitions. [2021-10-07 15:13:09,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:13:09,698 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 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 15:13:09,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:09,699 INFO L225 Difference]: With dead ends: 180 [2021-10-07 15:13:09,699 INFO L226 Difference]: Without dead ends: 143 [2021-10-07 15:13:09,699 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 454.2ms TimeCoverageRelationStatistics Valid=145, Invalid=725, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:13:09,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-10-07 15:13:09,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-10-07 15:13:09,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 141 states have (on average 2.425531914893617) internal successors, (342), 142 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:09,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 342 transitions. [2021-10-07 15:13:09,703 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 342 transitions. Word has length 17 [2021-10-07 15:13:09,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:09,703 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 342 transitions. [2021-10-07 15:13:09,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 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 15:13:09,703 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 342 transitions. [2021-10-07 15:13:09,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:13:09,704 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:09,704 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:09,741 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 15:13:09,919 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,SelfDestructingSolverStorable97 [2021-10-07 15:13:09,919 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:13:09,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:09,920 INFO L82 PathProgramCache]: Analyzing trace with hash 336920731, now seen corresponding path program 18 times [2021-10-07 15:13:09,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:09,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184791030] [2021-10-07 15:13:09,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:09,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:10,013 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-07 15:13:10,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:10,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184791030] [2021-10-07 15:13:10,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184791030] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:10,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280649072] [2021-10-07 15:13:10,021 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:13:10,021 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:10,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:10,022 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 15:13:10,054 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 15:13:11,691 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:13:11,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:11,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:13:11,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:11,735 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-07 15:13:11,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280649072] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:11,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:11,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2021-10-07 15:13:11,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594673854] [2021-10-07 15:13:11,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:13:11,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:11,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:13:11,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:13:11,737 INFO L87 Difference]: Start difference. First operand 143 states and 342 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:11,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:11,781 INFO L93 Difference]: Finished difference Result 279 states and 690 transitions. [2021-10-07 15:13:11,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:13:11,782 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 15:13:11,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:11,783 INFO L225 Difference]: With dead ends: 279 [2021-10-07 15:13:11,783 INFO L226 Difference]: Without dead ends: 275 [2021-10-07 15:13:11,783 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 13.2ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:13:11,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-10-07 15:13:11,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 227. [2021-10-07 15:13:11,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 225 states have (on average 2.7511111111111113) internal successors, (619), 226 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:11,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 619 transitions. [2021-10-07 15:13:11,789 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 619 transitions. Word has length 18 [2021-10-07 15:13:11,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:11,789 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 619 transitions. [2021-10-07 15:13:11,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:11,790 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 619 transitions. [2021-10-07 15:13:11,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:13:11,790 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:11,790 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:11,820 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 15:13:11,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,96 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:11,993 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:13:11,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:11,993 INFO L82 PathProgramCache]: Analyzing trace with hash 649269368, now seen corresponding path program 37 times [2021-10-07 15:13:11,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:11,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175758018] [2021-10-07 15:13:11,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:11,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:13,153 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:13,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:13,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175758018] [2021-10-07 15:13:13,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175758018] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:13,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54535606] [2021-10-07 15:13:13,154 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:13:13,154 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:13,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:13,155 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 15:13:13,156 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 15:13:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:14,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 71 conjunts are in the unsatisfiable core [2021-10-07 15:13:14,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:14,910 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 75 treesize of output 71 [2021-10-07 15:13:15,169 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 13 treesize of output 9 [2021-10-07 15:13:15,231 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 15:13:15,312 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 15:13:16,042 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:16,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54535606] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:16,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:16,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:13:16,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865715674] [2021-10-07 15:13:16,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:13:16,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:16,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:13:16,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=750, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:13:16,045 INFO L87 Difference]: Start difference. First operand 227 states and 619 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 15:13:17,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:17,824 INFO L93 Difference]: Finished difference Result 838 states and 2241 transitions. [2021-10-07 15:13:17,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:13:17,824 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 15:13:17,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:17,826 INFO L225 Difference]: With dead ends: 838 [2021-10-07 15:13:17,826 INFO L226 Difference]: Without dead ends: 830 [2021-10-07 15:13:17,826 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 2001.8ms TimeCoverageRelationStatistics Valid=278, Invalid=1702, Unknown=0, NotChecked=0, Total=1980 [2021-10-07 15:13:17,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2021-10-07 15:13:17,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 434. [2021-10-07 15:13:17,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 432 states have (on average 3.1064814814814814) internal successors, (1342), 433 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:17,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1342 transitions. [2021-10-07 15:13:17,838 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1342 transitions. Word has length 19 [2021-10-07 15:13:17,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:17,838 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 1342 transitions. [2021-10-07 15:13:17,838 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 15:13:17,838 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1342 transitions. [2021-10-07 15:13:17,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:13:17,839 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:17,839 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:17,868 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 15:13:18,039 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,SelfDestructingSolverStorable99 [2021-10-07 15:13:18,040 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:13:18,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:18,040 INFO L82 PathProgramCache]: Analyzing trace with hash 649252628, now seen corresponding path program 38 times [2021-10-07 15:13:18,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:18,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019486978] [2021-10-07 15:13:18,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:18,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:19,500 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:19,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:19,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019486978] [2021-10-07 15:13:19,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019486978] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:19,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077114846] [2021-10-07 15:13:19,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:13:19,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:19,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:19,503 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 15:13:19,503 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 15:13:21,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:13:21,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:21,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 77 conjunts are in the unsatisfiable core [2021-10-07 15:13:21,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:21,349 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 15:13:21,415 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 15:13:21,481 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 15:13:21,549 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 15:13:21,618 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 15:13:21,695 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 15:13:22,423 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:22,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077114846] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:22,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:22,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:13:22,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080844191] [2021-10-07 15:13:22,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:13:22,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:22,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:13:22,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=789, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:13:22,425 INFO L87 Difference]: Start difference. First operand 434 states and 1342 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 15:13:25,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:25,882 INFO L93 Difference]: Finished difference Result 1033 states and 2775 transitions. [2021-10-07 15:13:25,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-07 15:13:25,883 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 15:13:25,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:25,886 INFO L225 Difference]: With dead ends: 1033 [2021-10-07 15:13:25,886 INFO L226 Difference]: Without dead ends: 1009 [2021-10-07 15:13:25,886 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 3481.8ms TimeCoverageRelationStatistics Valid=375, Invalid=3165, Unknown=0, NotChecked=0, Total=3540 [2021-10-07 15:13:25,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2021-10-07 15:13:25,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 570. [2021-10-07 15:13:25,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 568 states have (on average 3.160211267605634) internal successors, (1795), 569 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:25,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1795 transitions. [2021-10-07 15:13:25,898 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1795 transitions. Word has length 19 [2021-10-07 15:13:25,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:25,898 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 1795 transitions. [2021-10-07 15:13:25,898 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 15:13:25,898 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1795 transitions. [2021-10-07 15:13:25,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:13:25,899 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:25,899 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:25,929 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 15:13:26,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,98 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:26,100 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:13:26,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:26,101 INFO L82 PathProgramCache]: Analyzing trace with hash 633182228, now seen corresponding path program 39 times [2021-10-07 15:13:26,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:26,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930927645] [2021-10-07 15:13:26,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:26,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:27,018 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:27,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:27,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930927645] [2021-10-07 15:13:27,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930927645] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:27,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612921538] [2021-10-07 15:13:27,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:13:27,020 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:27,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:27,021 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 15:13:27,022 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 15:13:28,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-07 15:13:28,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:28,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 73 conjunts are in the unsatisfiable core [2021-10-07 15:13:28,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:29,095 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 15:13:29,215 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 15:13:29,283 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 15:13:30,164 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:30,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612921538] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:30,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:30,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 27 [2021-10-07 15:13:30,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623885994] [2021-10-07 15:13:30,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-07 15:13:30,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:30,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-07 15:13:30,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:13:30,166 INFO L87 Difference]: Start difference. First operand 570 states and 1795 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 15:13:33,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:33,782 INFO L93 Difference]: Finished difference Result 883 states and 2268 transitions. [2021-10-07 15:13:33,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 15:13:33,783 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 15:13:33,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:33,785 INFO L225 Difference]: With dead ends: 883 [2021-10-07 15:13:33,786 INFO L226 Difference]: Without dead ends: 849 [2021-10-07 15:13:33,786 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 3289.9ms TimeCoverageRelationStatistics Valid=368, Invalid=3054, Unknown=0, NotChecked=0, Total=3422 [2021-10-07 15:13:33,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-10-07 15:13:33,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 534. [2021-10-07 15:13:33,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 530 states have (on average 2.9452830188679244) internal successors, (1561), 533 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:33,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 1561 transitions. [2021-10-07 15:13:33,803 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 1561 transitions. Word has length 19 [2021-10-07 15:13:33,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:33,803 INFO L470 AbstractCegarLoop]: Abstraction has 534 states and 1561 transitions. [2021-10-07 15:13:33,803 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 15:13:33,803 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 1561 transitions. [2021-10-07 15:13:33,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:13:33,807 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:33,807 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:33,854 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 15:13:34,020 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,SelfDestructingSolverStorable101 [2021-10-07 15:13:34,020 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:13:34,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:34,021 INFO L82 PathProgramCache]: Analyzing trace with hash 633165488, now seen corresponding path program 40 times [2021-10-07 15:13:34,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:34,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178705167] [2021-10-07 15:13:34,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:34,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:35,053 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:35,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:35,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178705167] [2021-10-07 15:13:35,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178705167] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:35,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984505281] [2021-10-07 15:13:35,054 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:13:35,054 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:35,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:35,055 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 15:13:35,056 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 15:13:36,900 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:13:36,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:36,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-07 15:13:36,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:36,916 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 406 treesize of output 398 [2021-10-07 15:13:37,153 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 15:13:37,211 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 15:13:37,274 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 16 treesize of output 12 [2021-10-07 15:13:38,163 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:38,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984505281] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:38,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:38,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 27 [2021-10-07 15:13:38,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036629029] [2021-10-07 15:13:38,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-07 15:13:38,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:38,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-07 15:13:38,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=727, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:13:38,165 INFO L87 Difference]: Start difference. First operand 534 states and 1561 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 15:13:42,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:42,994 INFO L93 Difference]: Finished difference Result 919 states and 2303 transitions. [2021-10-07 15:13:42,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-07 15:13:42,994 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 15:13:42,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:42,996 INFO L225 Difference]: With dead ends: 919 [2021-10-07 15:13:42,996 INFO L226 Difference]: Without dead ends: 899 [2021-10-07 15:13:42,997 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 3993.7ms TimeCoverageRelationStatistics Valid=372, Invalid=2934, Unknown=0, NotChecked=0, Total=3306 [2021-10-07 15:13:42,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2021-10-07 15:13:43,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 522. [2021-10-07 15:13:43,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 518 states have (on average 2.947876447876448) internal successors, (1527), 521 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:43,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 1527 transitions. [2021-10-07 15:13:43,008 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 1527 transitions. Word has length 19 [2021-10-07 15:13:43,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:43,008 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 1527 transitions. [2021-10-07 15:13:43,008 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 15:13:43,008 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 1527 transitions. [2021-10-07 15:13:43,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:13:43,009 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:43,009 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:43,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2021-10-07 15:13:43,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102,100 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:43,218 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:13:43,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:43,219 INFO L82 PathProgramCache]: Analyzing trace with hash 632646548, now seen corresponding path program 41 times [2021-10-07 15:13:43,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:43,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650257914] [2021-10-07 15:13:43,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:43,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:44,298 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:44,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:44,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650257914] [2021-10-07 15:13:44,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650257914] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:44,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921932880] [2021-10-07 15:13:44,299 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:13:44,299 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:44,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:44,300 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 15:13:44,301 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 15:13:46,183 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:13:46,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:46,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 58 conjunts are in the unsatisfiable core [2021-10-07 15:13:46,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:46,925 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:13:46,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921932880] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:46,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:46,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 25 [2021-10-07 15:13:46,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680023892] [2021-10-07 15:13:46,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-07 15:13:46,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:46,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-07 15:13:46,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=642, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:13:46,927 INFO L87 Difference]: Start difference. First operand 522 states and 1527 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 15:13:48,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:48,577 INFO L93 Difference]: Finished difference Result 631 states and 1772 transitions. [2021-10-07 15:13:48,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:13:48,578 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 19 [2021-10-07 15:13:48,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:48,580 INFO L225 Difference]: With dead ends: 631 [2021-10-07 15:13:48,580 INFO L226 Difference]: Without dead ends: 619 [2021-10-07 15:13:48,581 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1850.0ms TimeCoverageRelationStatistics Valid=141, Invalid=1499, Unknown=0, NotChecked=0, Total=1640 [2021-10-07 15:13:48,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-10-07 15:13:48,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 529. [2021-10-07 15:13:48,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 525 states have (on average 2.940952380952381) internal successors, (1544), 528 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:48,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 1544 transitions. [2021-10-07 15:13:48,588 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 1544 transitions. Word has length 19 [2021-10-07 15:13:48,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:48,589 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 1544 transitions. [2021-10-07 15:13:48,589 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 15:13:48,589 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 1544 transitions. [2021-10-07 15:13:48,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:13:48,589 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:48,589 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:48,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2021-10-07 15:13:48,790 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,SelfDestructingSolverStorable103 [2021-10-07 15:13:48,790 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:13:48,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:48,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1925570284, now seen corresponding path program 42 times [2021-10-07 15:13:48,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:48,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865024055] [2021-10-07 15:13:48,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:48,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:50,046 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:50,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:50,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865024055] [2021-10-07 15:13:50,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865024055] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:50,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620905803] [2021-10-07 15:13:50,047 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:13:50,047 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:50,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:50,049 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 15:13:50,094 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 15:13:52,031 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 15:13:52,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:13:52,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 79 conjunts are in the unsatisfiable core [2021-10-07 15:13:52,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:13:52,171 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 15:13:52,233 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 15:13:52,306 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 15:13:52,385 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 15:13:52,471 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 15:13:53,331 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:53,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620905803] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:53,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:13:53,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:13:53,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982838694] [2021-10-07 15:13:53,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:13:53,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:13:53,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:13:53,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=774, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:13:53,333 INFO L87 Difference]: Start difference. First operand 529 states and 1544 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 15:13:56,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:13:56,851 INFO L93 Difference]: Finished difference Result 1229 states and 3146 transitions. [2021-10-07 15:13:56,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-07 15:13:56,852 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 15:13:56,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:13:56,858 INFO L225 Difference]: With dead ends: 1229 [2021-10-07 15:13:56,858 INFO L226 Difference]: Without dead ends: 1223 [2021-10-07 15:13:56,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 3187.8ms TimeCoverageRelationStatistics Valid=379, Invalid=2701, Unknown=0, NotChecked=0, Total=3080 [2021-10-07 15:13:56,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2021-10-07 15:13:56,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 588. [2021-10-07 15:13:56,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 584 states have (on average 2.9280821917808217) internal successors, (1710), 587 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:13:56,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1710 transitions. [2021-10-07 15:13:56,878 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1710 transitions. Word has length 19 [2021-10-07 15:13:56,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:13:56,878 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 1710 transitions. [2021-10-07 15:13:56,878 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 15:13:56,878 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1710 transitions. [2021-10-07 15:13:56,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:13:56,879 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:13:56,879 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:13:56,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2021-10-07 15:13:57,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,102 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:57,094 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:13:57,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:13:57,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1925587024, now seen corresponding path program 43 times [2021-10-07 15:13:57,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:13:57,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709047216] [2021-10-07 15:13:57,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:13:57,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:13:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:13:57,982 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:13:57,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:13:57,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709047216] [2021-10-07 15:13:57,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709047216] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:13:57,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908459872] [2021-10-07 15:13:57,983 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:13:57,984 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:13:57,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:13:57,985 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 15:13:57,986 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 15:14:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:00,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 71 conjunts are in the unsatisfiable core [2021-10-07 15:14:00,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:00,016 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 47 treesize of output 45 [2021-10-07 15:14:00,318 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 13 treesize of output 9 [2021-10-07 15:14:00,390 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 15:14:00,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 15:14:01,260 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:14:01,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908459872] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:01,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:01,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:14:01,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145202737] [2021-10-07 15:14:01,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:14:01,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:01,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:14:01,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:14:01,262 INFO L87 Difference]: Start difference. First operand 588 states and 1710 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 15:14:03,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:14:03,124 INFO L93 Difference]: Finished difference Result 1065 states and 2812 transitions. [2021-10-07 15:14:03,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:14:03,125 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 15:14:03,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:14:03,127 INFO L225 Difference]: With dead ends: 1065 [2021-10-07 15:14:03,127 INFO L226 Difference]: Without dead ends: 1063 [2021-10-07 15:14:03,127 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 2326.1ms TimeCoverageRelationStatistics Valid=218, Invalid=1852, Unknown=0, NotChecked=0, Total=2070 [2021-10-07 15:14:03,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2021-10-07 15:14:03,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 588. [2021-10-07 15:14:03,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 584 states have (on average 2.9280821917808217) internal successors, (1710), 587 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:14:03,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1710 transitions. [2021-10-07 15:14:03,172 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1710 transitions. Word has length 19 [2021-10-07 15:14:03,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:14:03,172 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 1710 transitions. [2021-10-07 15:14:03,172 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 15:14:03,173 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1710 transitions. [2021-10-07 15:14:03,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:14:03,173 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:14:03,174 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:14:03,209 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 15:14:03,384 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,SelfDestructingSolverStorable105 [2021-10-07 15:14:03,384 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:14:03,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:14:03,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1941657424, now seen corresponding path program 44 times [2021-10-07 15:14:03,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:14:03,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074462874] [2021-10-07 15:14:03,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:14:03,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:14:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:04,568 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:14:04,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:14:04,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074462874] [2021-10-07 15:14:04,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074462874] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:04,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930119814] [2021-10-07 15:14:04,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:14:04,569 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:04,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:14:04,570 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 15:14:04,571 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 15:14:06,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:14:06,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:14:06,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 72 conjunts are in the unsatisfiable core [2021-10-07 15:14:06,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:06,829 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 15:14:06,892 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 15:14:06,968 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 15:14:07,057 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 15:14:07,904 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:14:07,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930119814] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:07,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:07,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:14:07,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421300707] [2021-10-07 15:14:07,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:14:07,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:07,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:14:07,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=781, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:14:07,906 INFO L87 Difference]: Start difference. First operand 588 states and 1710 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 15:14:10,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:14:10,419 INFO L93 Difference]: Finished difference Result 694 states and 1749 transitions. [2021-10-07 15:14:10,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 15:14:10,420 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 15:14:10,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:14:10,421 INFO L225 Difference]: With dead ends: 694 [2021-10-07 15:14:10,421 INFO L226 Difference]: Without dead ends: 684 [2021-10-07 15:14:10,422 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 2662.9ms TimeCoverageRelationStatistics Valid=279, Invalid=2271, Unknown=0, NotChecked=0, Total=2550 [2021-10-07 15:14:10,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2021-10-07 15:14:10,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 500. [2021-10-07 15:14:10,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 496 states have (on average 2.7358870967741935) internal successors, (1357), 499 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:14:10,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 1357 transitions. [2021-10-07 15:14:10,430 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 1357 transitions. Word has length 19 [2021-10-07 15:14:10,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:14:10,430 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 1357 transitions. [2021-10-07 15:14:10,430 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 15:14:10,430 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 1357 transitions. [2021-10-07 15:14:10,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:14:10,431 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:14:10,431 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:14:10,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2021-10-07 15:14:10,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,104 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:10,631 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:14:10,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:14:10,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1941674164, now seen corresponding path program 45 times [2021-10-07 15:14:10,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:14:10,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017062027] [2021-10-07 15:14:10,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:14:10,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:14:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:11,583 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:14:11,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:14:11,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017062027] [2021-10-07 15:14:11,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017062027] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:11,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058677767] [2021-10-07 15:14:11,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:14:11,585 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:11,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:14:11,586 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 15:14:11,587 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 15:14:13,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:14:13,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:14:13,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 80 conjunts are in the unsatisfiable core [2021-10-07 15:14:13,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:13,761 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 15:14:13,839 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 15:14:13,920 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 13 treesize of output 9 [2021-10-07 15:14:13,993 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 15:14:14,090 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 15:14:14,904 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:14:14,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058677767] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:14,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:14,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:14:14,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674490463] [2021-10-07 15:14:14,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:14:14,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:14,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:14:14,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=759, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:14:14,907 INFO L87 Difference]: Start difference. First operand 500 states and 1357 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 15:14:21,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:14:21,687 INFO L93 Difference]: Finished difference Result 1540 states and 4157 transitions. [2021-10-07 15:14:21,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-07 15:14:21,687 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 15:14:21,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:14:21,692 INFO L225 Difference]: With dead ends: 1540 [2021-10-07 15:14:21,692 INFO L226 Difference]: Without dead ends: 1526 [2021-10-07 15:14:21,693 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 963 ImplicationChecksByTransitivity, 6788.6ms TimeCoverageRelationStatistics Valid=886, Invalid=3944, Unknown=0, NotChecked=0, Total=4830 [2021-10-07 15:14:21,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1526 states. [2021-10-07 15:14:21,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1526 to 819. [2021-10-07 15:14:21,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 815 states have (on average 3.2650306748466256) internal successors, (2661), 818 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:14:21,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 2661 transitions. [2021-10-07 15:14:21,713 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 2661 transitions. Word has length 19 [2021-10-07 15:14:21,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:14:21,714 INFO L470 AbstractCegarLoop]: Abstraction has 819 states and 2661 transitions. [2021-10-07 15:14:21,714 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 15:14:21,714 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 2661 transitions. [2021-10-07 15:14:21,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:14:21,714 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:14:21,715 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:14:21,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2021-10-07 15:14:21,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-10-07 15:14:21,915 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:14:21,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:14:21,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1942193104, now seen corresponding path program 46 times [2021-10-07 15:14:21,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:14:21,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064862148] [2021-10-07 15:14:21,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:14:21,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:14:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:23,331 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:14:23,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:14:23,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064862148] [2021-10-07 15:14:23,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064862148] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:23,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322262109] [2021-10-07 15:14:23,332 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:14:23,332 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:23,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:14:23,333 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 15:14:23,334 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 15:14:25,441 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:14:25,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:14:25,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-07 15:14:25,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:25,464 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 92 treesize of output 88 [2021-10-07 15:14:25,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 15:14:25,776 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 15:14:25,849 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 16 treesize of output 12 [2021-10-07 15:14:26,531 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:14:26,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322262109] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:26,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:26,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:14:26,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383889599] [2021-10-07 15:14:26,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:14:26,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:26,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:14:26,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=792, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:14:26,533 INFO L87 Difference]: Start difference. First operand 819 states and 2661 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 15:14:29,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:14:29,042 INFO L93 Difference]: Finished difference Result 882 states and 2762 transitions. [2021-10-07 15:14:29,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:14:29,042 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 15:14:29,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:14:29,044 INFO L225 Difference]: With dead ends: 882 [2021-10-07 15:14:29,044 INFO L226 Difference]: Without dead ends: 874 [2021-10-07 15:14:29,044 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 2783.8ms TimeCoverageRelationStatistics Valid=200, Invalid=2056, Unknown=0, NotChecked=0, Total=2256 [2021-10-07 15:14:29,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-10-07 15:14:29,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 821. [2021-10-07 15:14:29,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 817 states have (on average 3.258261933904529) internal successors, (2662), 820 states have internal predecessors, (2662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:14:29,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 2662 transitions. [2021-10-07 15:14:29,056 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 2662 transitions. Word has length 19 [2021-10-07 15:14:29,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:14:29,056 INFO L470 AbstractCegarLoop]: Abstraction has 821 states and 2662 transitions. [2021-10-07 15:14:29,057 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 15:14:29,057 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 2662 transitions. [2021-10-07 15:14:29,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:14:29,057 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:14:29,057 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:14:29,088 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 15:14:29,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,106 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:29,258 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:14:29,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:14:29,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1838909257, now seen corresponding path program 17 times [2021-10-07 15:14:29,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:14:29,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433227467] [2021-10-07 15:14:29,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:14:29,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:14:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:14:30,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:14:30,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433227467] [2021-10-07 15:14:30,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433227467] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:30,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648076129] [2021-10-07 15:14:30,564 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:14:30,564 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:30,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:14:30,565 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 15:14:30,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2021-10-07 15:14:32,686 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:14:32,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:14:32,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 58 conjunts are in the unsatisfiable core [2021-10-07 15:14:32,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:32,703 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 138 treesize of output 134 [2021-10-07 15:14:32,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 15:14:32,987 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 15:14:33,049 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 15:14:33,699 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:14:33,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648076129] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:33,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:33,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:14:33,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176871195] [2021-10-07 15:14:33,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:14:33,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:33,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:14:33,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:14:33,701 INFO L87 Difference]: Start difference. First operand 821 states and 2662 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 15:14:37,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:14:37,465 INFO L93 Difference]: Finished difference Result 1256 states and 3572 transitions. [2021-10-07 15:14:37,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-07 15:14:37,465 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 15:14:37,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:14:37,468 INFO L225 Difference]: With dead ends: 1256 [2021-10-07 15:14:37,468 INFO L226 Difference]: Without dead ends: 1256 [2021-10-07 15:14:37,469 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 3445.0ms TimeCoverageRelationStatistics Valid=333, Invalid=3699, Unknown=0, NotChecked=0, Total=4032 [2021-10-07 15:14:37,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2021-10-07 15:14:37,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 899. [2021-10-07 15:14:37,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 895 states have (on average 3.2) internal successors, (2864), 898 states have internal predecessors, (2864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:14:37,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 2864 transitions. [2021-10-07 15:14:37,484 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 2864 transitions. Word has length 19 [2021-10-07 15:14:37,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:14:37,484 INFO L470 AbstractCegarLoop]: Abstraction has 899 states and 2864 transitions. [2021-10-07 15:14:37,484 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 15:14:37,484 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 2864 transitions. [2021-10-07 15:14:37,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:14:37,485 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:14:37,485 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:14:37,517 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 15:14:37,685 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,SelfDestructingSolverStorable109 [2021-10-07 15:14:37,686 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:14:37,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:14:37,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1838909233, now seen corresponding path program 11 times [2021-10-07 15:14:37,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:14:37,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744014077] [2021-10-07 15:14:37,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:14:37,687 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:14:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:38,104 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:14:38,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:14:38,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744014077] [2021-10-07 15:14:38,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744014077] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:38,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309274614] [2021-10-07 15:14:38,105 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:14:38,105 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:38,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:14:38,106 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 15:14:38,107 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 15:14:40,317 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:14:40,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:14:40,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-07 15:14:40,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:40,646 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:14:40,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309274614] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:40,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:40,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 24 [2021-10-07 15:14:40,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377524355] [2021-10-07 15:14:40,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 15:14:40,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:40,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 15:14:40,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:14:40,648 INFO L87 Difference]: Start difference. First operand 899 states and 2864 transitions. Second operand has 26 states, 25 states have (on average 1.52) internal successors, (38), 25 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 15:14:41,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:14:41,877 INFO L93 Difference]: Finished difference Result 1587 states and 4323 transitions. [2021-10-07 15:14:41,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 15:14:41,878 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.52) internal successors, (38), 25 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 15:14:41,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:14:41,895 INFO L225 Difference]: With dead ends: 1587 [2021-10-07 15:14:41,896 INFO L226 Difference]: Without dead ends: 1533 [2021-10-07 15:14:41,896 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1013.6ms TimeCoverageRelationStatistics Valid=169, Invalid=1471, Unknown=0, NotChecked=0, Total=1640 [2021-10-07 15:14:41,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2021-10-07 15:14:41,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 982. [2021-10-07 15:14:41,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 978 states have (on average 3.2464212678936604) internal successors, (3175), 981 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:14:41,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 3175 transitions. [2021-10-07 15:14:41,913 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 3175 transitions. Word has length 19 [2021-10-07 15:14:41,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:14:41,913 INFO L470 AbstractCegarLoop]: Abstraction has 982 states and 3175 transitions. [2021-10-07 15:14:41,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.52) internal successors, (38), 25 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 15:14:41,914 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 3175 transitions. [2021-10-07 15:14:41,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:14:41,914 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:14:41,914 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:14:41,946 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 15:14:42,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,108 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:42,115 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:14:42,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:14:42,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1854592777, now seen corresponding path program 18 times [2021-10-07 15:14:42,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:14:42,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296305605] [2021-10-07 15:14:42,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:14:42,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:14:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:42,752 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:14:42,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:14:42,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296305605] [2021-10-07 15:14:42,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296305605] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:42,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747038954] [2021-10-07 15:14:42,753 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:14:42,753 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:42,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:14:42,754 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 15:14:42,755 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 15:14:44,995 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:14:44,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:14:44,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-07 15:14:44,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:45,261 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 15:14:45,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 15:14:45,379 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 15:14:45,809 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:14:45,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747038954] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:45,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:45,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 27 [2021-10-07 15:14:45,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499754838] [2021-10-07 15:14:45,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-07 15:14:45,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:45,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-07 15:14:45,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:14:45,810 INFO L87 Difference]: Start difference. First operand 982 states and 3175 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 15:14:49,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:14:49,321 INFO L93 Difference]: Finished difference Result 1042 states and 2308 transitions. [2021-10-07 15:14:49,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 15:14:49,321 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 15:14:49,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:14:49,323 INFO L225 Difference]: With dead ends: 1042 [2021-10-07 15:14:49,323 INFO L226 Difference]: Without dead ends: 1020 [2021-10-07 15:14:49,324 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 3385.6ms TimeCoverageRelationStatistics Valid=594, Invalid=2598, Unknown=0, NotChecked=0, Total=3192 [2021-10-07 15:14:49,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2021-10-07 15:14:49,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 594. [2021-10-07 15:14:49,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 590 states have (on average 2.676271186440678) internal successors, (1579), 593 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:14:49,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 1579 transitions. [2021-10-07 15:14:49,335 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 1579 transitions. Word has length 19 [2021-10-07 15:14:49,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:14:49,335 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 1579 transitions. [2021-10-07 15:14:49,335 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 15:14:49,335 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 1579 transitions. [2021-10-07 15:14:49,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:14:49,336 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:14:49,336 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:14:49,367 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 15:14:49,536 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,SelfDestructingSolverStorable111 [2021-10-07 15:14:49,537 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:14:49,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:14:49,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1854608587, now seen corresponding path program 19 times [2021-10-07 15:14:49,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:14:49,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041657332] [2021-10-07 15:14:49,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:14:49,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:14:49,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:49,994 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:14:49,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:14:49,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041657332] [2021-10-07 15:14:49,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041657332] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:49,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289913753] [2021-10-07 15:14:49,995 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:14:49,995 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:49,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:14:49,996 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 15:14:49,996 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 15:14:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:52,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-07 15:14:52,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:52,705 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:14:52,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289913753] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:52,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:52,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2021-10-07 15:14:52,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130376653] [2021-10-07 15:14:52,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 15:14:52,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:52,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 15:14:52,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:14:52,707 INFO L87 Difference]: Start difference. First operand 594 states and 1579 transitions. Second operand has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 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 15:14:54,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:14:54,814 INFO L93 Difference]: Finished difference Result 979 states and 2268 transitions. [2021-10-07 15:14:54,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 15:14:54,814 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 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 15:14:54,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:14:54,816 INFO L225 Difference]: With dead ends: 979 [2021-10-07 15:14:54,816 INFO L226 Difference]: Without dead ends: 973 [2021-10-07 15:14:54,816 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 1969.2ms TimeCoverageRelationStatistics Valid=381, Invalid=2699, Unknown=0, NotChecked=0, Total=3080 [2021-10-07 15:14:54,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2021-10-07 15:14:54,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 601. [2021-10-07 15:14:54,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 597 states have (on average 2.747068676716918) internal successors, (1640), 600 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:14:54,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 1640 transitions. [2021-10-07 15:14:54,827 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 1640 transitions. Word has length 19 [2021-10-07 15:14:54,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:14:54,827 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 1640 transitions. [2021-10-07 15:14:54,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 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 15:14:54,827 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 1640 transitions. [2021-10-07 15:14:54,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:14:54,828 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:14:54,828 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:14:54,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2021-10-07 15:14:55,028 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,SelfDestructingSolverStorable112 [2021-10-07 15:14:55,029 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:14:55,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:14:55,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1854608563, now seen corresponding path program 12 times [2021-10-07 15:14:55,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:14:55,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345502994] [2021-10-07 15:14:55,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:14:55,030 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:14:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:14:55,592 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:14:55,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:14:55,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345502994] [2021-10-07 15:14:55,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345502994] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:55,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869981759] [2021-10-07 15:14:55,593 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:14:55,594 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:14:55,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:14:55,595 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 15:14:55,595 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 15:14:57,786 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:14:57,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:14:57,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-07 15:14:57,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:14:57,980 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 15:14:58,033 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 15:14:58,083 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 15:14:58,375 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:14:58,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869981759] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:14:58,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:14:58,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 24 [2021-10-07 15:14:58,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608676836] [2021-10-07 15:14:58,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 15:14:58,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:14:58,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 15:14:58,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:14:58,377 INFO L87 Difference]: Start difference. First operand 601 states and 1640 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 15:15:00,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:15:00,632 INFO L93 Difference]: Finished difference Result 544 states and 1224 transitions. [2021-10-07 15:15:00,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:15:00,633 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 19 [2021-10-07 15:15:00,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:15:00,634 INFO L225 Difference]: With dead ends: 544 [2021-10-07 15:15:00,634 INFO L226 Difference]: Without dead ends: 518 [2021-10-07 15:15:00,635 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 2315.1ms TimeCoverageRelationStatistics Valid=373, Invalid=1979, Unknown=0, NotChecked=0, Total=2352 [2021-10-07 15:15:00,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-10-07 15:15:00,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 382. [2021-10-07 15:15:00,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 378 states have (on average 2.494708994708995) internal successors, (943), 381 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:15:00,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 943 transitions. [2021-10-07 15:15:00,643 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 943 transitions. Word has length 19 [2021-10-07 15:15:00,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:15:00,644 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 943 transitions. [2021-10-07 15:15:00,644 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 15:15:00,644 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 943 transitions. [2021-10-07 15:15:00,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:15:00,645 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:15:00,645 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:15:00,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2021-10-07 15:15:00,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-10-07 15:15:00,846 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:15:00,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:15:00,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1854608556, now seen corresponding path program 19 times [2021-10-07 15:15:00,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:15:00,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831239432] [2021-10-07 15:15:00,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:15:00,848 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:15:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:01,303 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:01,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:15:01,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831239432] [2021-10-07 15:15:01,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831239432] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:01,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518297349] [2021-10-07 15:15:01,304 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:15:01,304 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:01,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:15:01,305 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 15:15:01,306 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 15:15:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:03,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-07 15:15:03,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:15:04,139 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:04,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518297349] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:04,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:15:04,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2021-10-07 15:15:04,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557256005] [2021-10-07 15:15:04,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 15:15:04,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:15:04,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 15:15:04,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:15:04,142 INFO L87 Difference]: Start difference. First operand 382 states and 943 transitions. Second operand has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 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 15:15:06,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:15:06,213 INFO L93 Difference]: Finished difference Result 493 states and 1118 transitions. [2021-10-07 15:15:06,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-07 15:15:06,213 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 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 15:15:06,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:15:06,215 INFO L225 Difference]: With dead ends: 493 [2021-10-07 15:15:06,215 INFO L226 Difference]: Without dead ends: 493 [2021-10-07 15:15:06,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 2106.6ms TimeCoverageRelationStatistics Valid=322, Invalid=2758, Unknown=0, NotChecked=0, Total=3080 [2021-10-07 15:15:06,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-10-07 15:15:06,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 380. [2021-10-07 15:15:06,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 376 states have (on average 2.5) internal successors, (940), 379 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:15:06,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 940 transitions. [2021-10-07 15:15:06,222 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 940 transitions. Word has length 19 [2021-10-07 15:15:06,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:15:06,222 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 940 transitions. [2021-10-07 15:15:06,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 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 15:15:06,222 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 940 transitions. [2021-10-07 15:15:06,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:15:06,223 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:15:06,223 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:15:06,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2021-10-07 15:15:06,423 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,SelfDestructingSolverStorable114 [2021-10-07 15:15:06,424 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:15:06,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:15:06,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1854608532, now seen corresponding path program 47 times [2021-10-07 15:15:06,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:15:06,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72376770] [2021-10-07 15:15:06,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:15:06,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:15:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:07,199 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:07,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:15:07,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72376770] [2021-10-07 15:15:07,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72376770] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:07,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53319743] [2021-10-07 15:15:07,200 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:15:07,200 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:07,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:15:07,201 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 15:15:07,202 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 15:15:09,477 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:15:09,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:15:09,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 80 conjunts are in the unsatisfiable core [2021-10-07 15:15:09,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:15:09,497 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 75 treesize of output 71 [2021-10-07 15:15:09,783 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 13 treesize of output 9 [2021-10-07 15:15:09,847 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 15:15:09,935 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 15:15:10,668 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:10,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53319743] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:10,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:15:10,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 27 [2021-10-07 15:15:10,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128344772] [2021-10-07 15:15:10,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-07 15:15:10,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:15:10,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-07 15:15:10,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:15:10,671 INFO L87 Difference]: Start difference. First operand 380 states and 940 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 15:15:12,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:15:12,083 INFO L93 Difference]: Finished difference Result 451 states and 1060 transitions. [2021-10-07 15:15:12,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 15:15:12,084 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 15:15:12,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:15:12,085 INFO L225 Difference]: With dead ends: 451 [2021-10-07 15:15:12,085 INFO L226 Difference]: Without dead ends: 447 [2021-10-07 15:15:12,086 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1834.1ms TimeCoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2021-10-07 15:15:12,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-10-07 15:15:12,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 389. [2021-10-07 15:15:12,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 385 states have (on average 2.4935064935064934) internal successors, (960), 388 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:15:12,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 960 transitions. [2021-10-07 15:15:12,093 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 960 transitions. Word has length 19 [2021-10-07 15:15:12,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:15:12,093 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 960 transitions. [2021-10-07 15:15:12,094 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 15:15:12,094 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 960 transitions. [2021-10-07 15:15:12,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:15:12,094 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:15:12,094 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:15:12,130 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 15:15:12,307 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,SelfDestructingSolverStorable115 [2021-10-07 15:15:12,307 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:15:12,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:15:12,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1854591816, now seen corresponding path program 20 times [2021-10-07 15:15:12,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:15:12,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139123560] [2021-10-07 15:15:12,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:15:12,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:15:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:12,721 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:12,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:15:12,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139123560] [2021-10-07 15:15:12,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139123560] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:12,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495445139] [2021-10-07 15:15:12,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:15:12,722 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:12,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:15:12,723 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 15:15:12,724 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 15:15:15,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:15:15,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:15:15,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-07 15:15:15,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:15:15,316 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 15:15:15,375 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 15:15:15,427 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 17 treesize of output 13 [2021-10-07 15:15:15,835 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:15,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495445139] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:15,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:15:15,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 27 [2021-10-07 15:15:15,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044488398] [2021-10-07 15:15:15,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-07 15:15:15,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:15:15,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-07 15:15:15,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:15:15,837 INFO L87 Difference]: Start difference. First operand 389 states and 960 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 15:15:17,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:15:17,310 INFO L93 Difference]: Finished difference Result 482 states and 1113 transitions. [2021-10-07 15:15:17,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:15:17,310 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 15:15:17,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:15:17,312 INFO L225 Difference]: With dead ends: 482 [2021-10-07 15:15:17,312 INFO L226 Difference]: Without dead ends: 482 [2021-10-07 15:15:17,312 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1577.8ms TimeCoverageRelationStatistics Valid=287, Invalid=1969, Unknown=0, NotChecked=0, Total=2256 [2021-10-07 15:15:17,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-10-07 15:15:17,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 387. [2021-10-07 15:15:17,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 383 states have (on average 2.493472584856397) internal successors, (955), 386 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:15:17,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 955 transitions. [2021-10-07 15:15:17,319 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 955 transitions. Word has length 19 [2021-10-07 15:15:17,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:15:17,319 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 955 transitions. [2021-10-07 15:15:17,319 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 15:15:17,319 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 955 transitions. [2021-10-07 15:15:17,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:15:17,319 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:15:17,319 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:15:17,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2021-10-07 15:15:17,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,114 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:17,520 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:15:17,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:15:17,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1854591792, now seen corresponding path program 48 times [2021-10-07 15:15:17,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:15:17,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366061413] [2021-10-07 15:15:17,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:15:17,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:15:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:18,859 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:18,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:15:18,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366061413] [2021-10-07 15:15:18,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366061413] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:18,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76127506] [2021-10-07 15:15:18,860 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:15:18,861 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:18,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:15:18,862 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 15:15:18,862 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 15:15:21,160 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:15:21,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:15:21,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 80 conjunts are in the unsatisfiable core [2021-10-07 15:15:21,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:15:21,239 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 15:15:21,311 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 15:15:21,390 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 15:15:21,461 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 15:15:21,530 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 15:15:21,616 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 15:15:22,349 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:22,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76127506] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:22,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:15:22,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:15:22,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884367342] [2021-10-07 15:15:22,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:15:22,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:15:22,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:15:22,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=781, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:15:22,351 INFO L87 Difference]: Start difference. First operand 387 states and 955 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 15:15:24,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:15:24,036 INFO L93 Difference]: Finished difference Result 477 states and 1105 transitions. [2021-10-07 15:15:24,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:15:24,036 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 15:15:24,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:15:24,037 INFO L225 Difference]: With dead ends: 477 [2021-10-07 15:15:24,037 INFO L226 Difference]: Without dead ends: 471 [2021-10-07 15:15:24,038 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 2180.1ms TimeCoverageRelationStatistics Valid=213, Invalid=1857, Unknown=0, NotChecked=0, Total=2070 [2021-10-07 15:15:24,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-10-07 15:15:24,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 385. [2021-10-07 15:15:24,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 381 states have (on average 2.493438320209974) internal successors, (950), 384 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:15:24,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 950 transitions. [2021-10-07 15:15:24,043 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 950 transitions. Word has length 19 [2021-10-07 15:15:24,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:15:24,043 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 950 transitions. [2021-10-07 15:15:24,043 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 15:15:24,043 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 950 transitions. [2021-10-07 15:15:24,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:15:24,044 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:15:24,044 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:15:24,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2021-10-07 15:15:24,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,115 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:24,244 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:15:24,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:15:24,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1854072876, now seen corresponding path program 21 times [2021-10-07 15:15:24,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:15:24,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234580743] [2021-10-07 15:15:24,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:15:24,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:15:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:24,628 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:24,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:15:24,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234580743] [2021-10-07 15:15:24,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234580743] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:24,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842525700] [2021-10-07 15:15:24,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:15:24,629 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:24,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:15:24,630 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 15:15:24,631 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 15:15:27,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:15:27,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:15:27,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-07 15:15:27,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:15:27,242 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 15:15:27,298 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 15:15:27,353 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 15:15:27,683 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:15:27,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842525700] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:27,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:15:27,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 25 [2021-10-07 15:15:27,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985979606] [2021-10-07 15:15:27,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-07 15:15:27,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:15:27,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-07 15:15:27,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:15:27,685 INFO L87 Difference]: Start difference. First operand 385 states and 950 transitions. Second operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 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 15:15:29,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:15:29,526 INFO L93 Difference]: Finished difference Result 472 states and 1093 transitions. [2021-10-07 15:15:29,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 15:15:29,526 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 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 15:15:29,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:15:29,527 INFO L225 Difference]: With dead ends: 472 [2021-10-07 15:15:29,527 INFO L226 Difference]: Without dead ends: 472 [2021-10-07 15:15:29,528 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 1830.1ms TimeCoverageRelationStatistics Valid=422, Invalid=2230, Unknown=0, NotChecked=0, Total=2652 [2021-10-07 15:15:29,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-10-07 15:15:29,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 377. [2021-10-07 15:15:29,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 373 states have (on average 2.5040214477211795) internal successors, (934), 376 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:15:29,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 934 transitions. [2021-10-07 15:15:29,533 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 934 transitions. Word has length 19 [2021-10-07 15:15:29,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:15:29,533 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 934 transitions. [2021-10-07 15:15:29,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 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 15:15:29,533 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 934 transitions. [2021-10-07 15:15:29,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:15:29,534 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:15:29,534 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:15:29,567 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 15:15:29,735 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,SelfDestructingSolverStorable118 [2021-10-07 15:15:29,735 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:15:29,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:15:29,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1854072852, now seen corresponding path program 49 times [2021-10-07 15:15:29,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:15:29,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509418895] [2021-10-07 15:15:29,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:15:29,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:15:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:31,027 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:31,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:15:31,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509418895] [2021-10-07 15:15:31,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509418895] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:31,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107463536] [2021-10-07 15:15:31,028 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:15:31,028 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:31,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:15:31,029 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 15:15:31,030 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 15:15:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:33,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 71 conjunts are in the unsatisfiable core [2021-10-07 15:15:33,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:15:33,449 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 75 treesize of output 71 [2021-10-07 15:15:33,730 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 13 treesize of output 9 [2021-10-07 15:15:33,796 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 15:15:33,886 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 15:15:34,612 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:34,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107463536] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:34,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:15:34,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:15:34,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235628577] [2021-10-07 15:15:34,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:15:34,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:15:34,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:15:34,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:15:34,614 INFO L87 Difference]: Start difference. First operand 377 states and 934 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 15:15:36,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:15:36,009 INFO L93 Difference]: Finished difference Result 435 states and 1030 transitions. [2021-10-07 15:15:36,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:15:36,010 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 15:15:36,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:15:36,011 INFO L225 Difference]: With dead ends: 435 [2021-10-07 15:15:36,011 INFO L226 Difference]: Without dead ends: 427 [2021-10-07 15:15:36,011 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 1982.8ms TimeCoverageRelationStatistics Valid=179, Invalid=1627, Unknown=0, NotChecked=0, Total=1806 [2021-10-07 15:15:36,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-10-07 15:15:36,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 375. [2021-10-07 15:15:36,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 371 states have (on average 2.504043126684636) internal successors, (929), 374 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:15:36,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 929 transitions. [2021-10-07 15:15:36,019 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 929 transitions. Word has length 19 [2021-10-07 15:15:36,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:15:36,019 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 929 transitions. [2021-10-07 15:15:36,019 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 15:15:36,019 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 929 transitions. [2021-10-07 15:15:36,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:15:36,020 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:15:36,020 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:15:36,054 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 15:15:36,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,117 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:36,226 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:15:36,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:15:36,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1837985736, now seen corresponding path program 22 times [2021-10-07 15:15:36,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:15:36,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101395335] [2021-10-07 15:15:36,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:15:36,228 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:15:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:37,306 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:37,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:15:37,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101395335] [2021-10-07 15:15:37,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101395335] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:37,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244976002] [2021-10-07 15:15:37,307 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:15:37,307 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:37,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:15:37,308 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 15:15:37,309 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 15:15:39,725 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:15:39,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:15:39,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-07 15:15:39,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:15:40,305 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:40,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244976002] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:40,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:15:40,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 27 [2021-10-07 15:15:40,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820593816] [2021-10-07 15:15:40,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-07 15:15:40,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:15:40,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-07 15:15:40,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=735, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:15:40,307 INFO L87 Difference]: Start difference. First operand 375 states and 929 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 15:15:42,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:15:42,960 INFO L93 Difference]: Finished difference Result 477 states and 1109 transitions. [2021-10-07 15:15:42,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-07 15:15:42,960 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 15:15:42,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:15:42,962 INFO L225 Difference]: With dead ends: 477 [2021-10-07 15:15:42,962 INFO L226 Difference]: Without dead ends: 477 [2021-10-07 15:15:42,962 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 2748.8ms TimeCoverageRelationStatistics Valid=230, Invalid=2220, Unknown=0, NotChecked=0, Total=2450 [2021-10-07 15:15:42,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-10-07 15:15:42,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 386. [2021-10-07 15:15:42,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 382 states have (on average 2.479057591623037) internal successors, (947), 385 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:15:42,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 947 transitions. [2021-10-07 15:15:42,968 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 947 transitions. Word has length 19 [2021-10-07 15:15:42,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:15:42,968 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 947 transitions. [2021-10-07 15:15:42,968 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 15:15:42,968 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 947 transitions. [2021-10-07 15:15:42,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:15:42,969 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:15:42,969 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:15:43,001 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 15:15:43,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,118 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:43,169 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:15:43,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:15:43,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1837985712, now seen corresponding path program 50 times [2021-10-07 15:15:43,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:15:43,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469580008] [2021-10-07 15:15:43,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:15:43,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:15:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:44,158 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:44,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:15:44,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469580008] [2021-10-07 15:15:44,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469580008] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:44,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648584536] [2021-10-07 15:15:44,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:15:44,159 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:44,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:15:44,160 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 15:15:44,161 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 15:15:46,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:15:46,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:15:46,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 79 conjunts are in the unsatisfiable core [2021-10-07 15:15:46,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:15:46,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 15:15:46,779 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 15:15:46,840 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 15:15:46,909 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 15:15:47,001 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 15:15:47,830 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:47,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648584536] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:47,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:15:47,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 27 [2021-10-07 15:15:47,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955453578] [2021-10-07 15:15:47,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-07 15:15:47,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:15:47,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-07 15:15:47,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:15:47,831 INFO L87 Difference]: Start difference. First operand 386 states and 947 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 15:15:49,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:15:49,665 INFO L93 Difference]: Finished difference Result 431 states and 1025 transitions. [2021-10-07 15:15:49,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 15:15:49,666 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 15:15:49,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:15:49,667 INFO L225 Difference]: With dead ends: 431 [2021-10-07 15:15:49,667 INFO L226 Difference]: Without dead ends: 431 [2021-10-07 15:15:49,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 2227.0ms TimeCoverageRelationStatistics Valid=198, Invalid=1694, Unknown=0, NotChecked=0, Total=1892 [2021-10-07 15:15:49,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-10-07 15:15:49,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 391. [2021-10-07 15:15:49,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 387 states have (on average 2.4651162790697674) internal successors, (954), 390 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:15:49,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 954 transitions. [2021-10-07 15:15:49,675 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 954 transitions. Word has length 19 [2021-10-07 15:15:49,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:15:49,675 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 954 transitions. [2021-10-07 15:15:49,675 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 15:15:49,675 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 954 transitions. [2021-10-07 15:15:49,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:15:49,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:15:49,676 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:15:49,728 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 15:15:49,890 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,SelfDestructingSolverStorable121 [2021-10-07 15:15:49,891 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:15:49,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:15:49,891 INFO L82 PathProgramCache]: Analyzing trace with hash -795229506, now seen corresponding path program 51 times [2021-10-07 15:15:49,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:15:49,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501955510] [2021-10-07 15:15:49,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:15:49,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:15:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:51,059 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:51,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:15:51,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501955510] [2021-10-07 15:15:51,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501955510] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:51,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933775791] [2021-10-07 15:15:51,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:15:51,060 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:51,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:15:51,061 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 15:15:51,062 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 15:15:53,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-07 15:15:53,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:15:53,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 73 conjunts are in the unsatisfiable core [2021-10-07 15:15:53,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:15:53,889 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 15:15:53,971 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 15:15:54,149 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:15:54,149 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 15:15:54,839 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:54,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933775791] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:54,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:15:54,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:15:54,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192568493] [2021-10-07 15:15:54,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:15:54,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:15:54,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:15:54,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:15:54,841 INFO L87 Difference]: Start difference. First operand 391 states and 954 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 15:15:57,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:15:57,359 INFO L93 Difference]: Finished difference Result 539 states and 1205 transitions. [2021-10-07 15:15:57,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 15:15:57,360 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 15:15:57,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:15:57,361 INFO L225 Difference]: With dead ends: 539 [2021-10-07 15:15:57,361 INFO L226 Difference]: Without dead ends: 535 [2021-10-07 15:15:57,361 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 3002.9ms TimeCoverageRelationStatistics Valid=347, Invalid=2103, Unknown=0, NotChecked=0, Total=2450 [2021-10-07 15:15:57,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-10-07 15:15:57,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 397. [2021-10-07 15:15:57,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 393 states have (on average 2.455470737913486) internal successors, (965), 396 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:15:57,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 965 transitions. [2021-10-07 15:15:57,367 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 965 transitions. Word has length 19 [2021-10-07 15:15:57,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:15:57,367 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 965 transitions. [2021-10-07 15:15:57,367 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 15:15:57,367 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 965 transitions. [2021-10-07 15:15:57,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:15:57,368 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:15:57,368 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:15:57,383 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 15:15:57,568 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,SelfDestructingSolverStorable122 [2021-10-07 15:15:57,568 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:15:57,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:15:57,569 INFO L82 PathProgramCache]: Analyzing trace with hash -795246246, now seen corresponding path program 52 times [2021-10-07 15:15:57,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:15:57,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087599988] [2021-10-07 15:15:57,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:15:57,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:15:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:15:58,403 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:15:58,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:15:58,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087599988] [2021-10-07 15:15:58,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087599988] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:15:58,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239685183] [2021-10-07 15:15:58,404 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:15:58,405 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:15:58,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:15:58,406 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:15:58,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2021-10-07 15:16:00,918 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:16:00,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:16:00,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 71 conjunts are in the unsatisfiable core [2021-10-07 15:16:00,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:16:00,943 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 47 treesize of output 45 [2021-10-07 15:16:01,212 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 13 treesize of output 9 [2021-10-07 15:16:01,278 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 15:16:01,461 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:16:01,462 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 15:16:02,159 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:16:02,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239685183] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:02,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:16:02,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:16:02,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449969586] [2021-10-07 15:16:02,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:16:02,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:16:02,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:16:02,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:16:02,161 INFO L87 Difference]: Start difference. First operand 397 states and 965 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 15:16:04,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:16:04,871 INFO L93 Difference]: Finished difference Result 495 states and 1137 transitions. [2021-10-07 15:16:04,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-07 15:16:04,872 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 15:16:04,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:16:04,872 INFO L225 Difference]: With dead ends: 495 [2021-10-07 15:16:04,872 INFO L226 Difference]: Without dead ends: 487 [2021-10-07 15:16:04,873 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 2977.9ms TimeCoverageRelationStatistics Valid=349, Invalid=2513, Unknown=0, NotChecked=0, Total=2862 [2021-10-07 15:16:04,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-10-07 15:16:04,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 393. [2021-10-07 15:16:04,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 389 states have (on average 2.4601542416452444) internal successors, (957), 392 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:16:04,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 957 transitions. [2021-10-07 15:16:04,879 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 957 transitions. Word has length 19 [2021-10-07 15:16:04,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:16:04,880 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 957 transitions. [2021-10-07 15:16:04,880 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 15:16:04,880 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 957 transitions. [2021-10-07 15:16:04,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:16:04,880 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:16:04,880 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:16:04,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2021-10-07 15:16:05,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2021-10-07 15:16:05,081 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:16:05,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:16:05,082 INFO L82 PathProgramCache]: Analyzing trace with hash -811316646, now seen corresponding path program 53 times [2021-10-07 15:16:05,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:16:05,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172560033] [2021-10-07 15:16:05,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:16:05,083 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:16:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:16:06,192 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:16:06,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:16:06,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172560033] [2021-10-07 15:16:06,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172560033] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:06,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110784051] [2021-10-07 15:16:06,193 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:16:06,193 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:16:06,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:16:06,194 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:16:06,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2021-10-07 15:16:08,752 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:16:08,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:16:08,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 75 conjunts are in the unsatisfiable core [2021-10-07 15:16:08,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:16:08,776 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 75 treesize of output 71 [2021-10-07 15:16:09,046 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 13 treesize of output 9 [2021-10-07 15:16:09,109 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 15:16:09,292 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:16:09,293 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 28 treesize of output 27 [2021-10-07 15:16:10,153 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:16:10,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110784051] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:10,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:16:10,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:16:10,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382154796] [2021-10-07 15:16:10,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:16:10,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:16:10,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:16:10,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=769, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:16:10,156 INFO L87 Difference]: Start difference. First operand 393 states and 957 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 15:16:12,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:16:12,714 INFO L93 Difference]: Finished difference Result 511 states and 1155 transitions. [2021-10-07 15:16:12,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 15:16:12,714 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 15:16:12,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:16:12,716 INFO L225 Difference]: With dead ends: 511 [2021-10-07 15:16:12,716 INFO L226 Difference]: Without dead ends: 507 [2021-10-07 15:16:12,716 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 2865.0ms TimeCoverageRelationStatistics Valid=289, Invalid=2063, Unknown=0, NotChecked=0, Total=2352 [2021-10-07 15:16:12,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-10-07 15:16:12,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 397. [2021-10-07 15:16:12,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 393 states have (on average 2.455470737913486) internal successors, (965), 396 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:16:12,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 965 transitions. [2021-10-07 15:16:12,721 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 965 transitions. Word has length 19 [2021-10-07 15:16:12,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:16:12,722 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 965 transitions. [2021-10-07 15:16:12,722 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 15:16:12,722 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 965 transitions. [2021-10-07 15:16:12,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:16:12,722 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:16:12,722 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:16:12,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2021-10-07 15:16:12,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2021-10-07 15:16:12,923 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:16:12,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:16:12,924 INFO L82 PathProgramCache]: Analyzing trace with hash -811333386, now seen corresponding path program 54 times [2021-10-07 15:16:12,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:16:12,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261062346] [2021-10-07 15:16:12,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:16:12,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:16:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:16:13,984 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:16:13,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:16:13,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261062346] [2021-10-07 15:16:13,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261062346] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:13,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100380022] [2021-10-07 15:16:13,985 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:16:13,985 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:16:13,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:16:13,986 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:16:13,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2021-10-07 15:16:16,602 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 15:16:16,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:16:16,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 77 conjunts are in the unsatisfiable core [2021-10-07 15:16:16,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:16:16,623 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 396 treesize of output 364 [2021-10-07 15:16:16,775 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 13 treesize of output 9 [2021-10-07 15:16:16,840 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 13 treesize of output 9 [2021-10-07 15:16:16,904 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 13 treesize of output 9 [2021-10-07 15:16:16,977 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 15:16:17,151 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:16:17,151 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 15:16:17,878 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:16:17,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100380022] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:17,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:16:17,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:16:17,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918506676] [2021-10-07 15:16:17,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:16:17,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:16:17,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:16:17,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=777, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:16:17,880 INFO L87 Difference]: Start difference. First operand 397 states and 965 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 15:16:20,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:16:20,687 INFO L93 Difference]: Finished difference Result 522 states and 1172 transitions. [2021-10-07 15:16:20,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-07 15:16:20,688 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 15:16:20,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:16:20,689 INFO L225 Difference]: With dead ends: 522 [2021-10-07 15:16:20,689 INFO L226 Difference]: Without dead ends: 516 [2021-10-07 15:16:20,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 3084.1ms TimeCoverageRelationStatistics Valid=383, Invalid=2697, Unknown=0, NotChecked=0, Total=3080 [2021-10-07 15:16:20,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-10-07 15:16:20,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 395. [2021-10-07 15:16:20,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 391 states have (on average 2.455242966751918) internal successors, (960), 394 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:16:20,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 960 transitions. [2021-10-07 15:16:20,695 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 960 transitions. Word has length 19 [2021-10-07 15:16:20,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:16:20,696 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 960 transitions. [2021-10-07 15:16:20,696 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 15:16:20,696 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 960 transitions. [2021-10-07 15:16:20,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:16:20,696 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:16:20,696 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:16:20,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2021-10-07 15:16:20,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 123 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2021-10-07 15:16:20,897 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:16:20,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:16:20,898 INFO L82 PathProgramCache]: Analyzing trace with hash -811852326, now seen corresponding path program 55 times [2021-10-07 15:16:20,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:16:20,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273338323] [2021-10-07 15:16:20,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:16:20,899 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:16:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:16:21,845 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:16:21,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:16:21,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273338323] [2021-10-07 15:16:21,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273338323] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:21,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293418418] [2021-10-07 15:16:21,846 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:16:21,846 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:16:21,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:16:21,847 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:16:21,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2021-10-07 15:16:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:16:24,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 71 conjunts are in the unsatisfiable core [2021-10-07 15:16:24,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:16:24,513 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 69 treesize of output 67 [2021-10-07 15:16:24,783 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 13 treesize of output 9 [2021-10-07 15:16:24,862 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 15:16:25,050 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:16:25,050 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 15:16:25,766 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:16:25,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293418418] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:25,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:16:25,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:16:25,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669728335] [2021-10-07 15:16:25,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:16:25,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:16:25,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:16:25,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=775, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:16:25,768 INFO L87 Difference]: Start difference. First operand 395 states and 960 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 15:16:28,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:16:28,017 INFO L93 Difference]: Finished difference Result 451 states and 1058 transitions. [2021-10-07 15:16:28,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:16:28,018 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 15:16:28,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:16:28,019 INFO L225 Difference]: With dead ends: 451 [2021-10-07 15:16:28,019 INFO L226 Difference]: Without dead ends: 439 [2021-10-07 15:16:28,020 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 2785.9ms TimeCoverageRelationStatistics Valid=259, Invalid=2191, Unknown=0, NotChecked=0, Total=2450 [2021-10-07 15:16:28,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-10-07 15:16:28,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 389. [2021-10-07 15:16:28,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 385 states have (on average 2.464935064935065) internal successors, (949), 388 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:16:28,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 949 transitions. [2021-10-07 15:16:28,025 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 949 transitions. Word has length 19 [2021-10-07 15:16:28,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:16:28,026 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 949 transitions. [2021-10-07 15:16:28,026 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 15:16:28,026 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 949 transitions. [2021-10-07 15:16:28,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:16:28,026 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:16:28,027 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:16:28,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2021-10-07 15:16:28,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2021-10-07 15:16:28,229 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:16:28,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:16:28,230 INFO L82 PathProgramCache]: Analyzing trace with hash 924898138, now seen corresponding path program 56 times [2021-10-07 15:16:28,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:16:28,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919001414] [2021-10-07 15:16:28,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:16:28,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:16:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:16:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:16:29,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:16:29,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919001414] [2021-10-07 15:16:29,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919001414] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:29,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687196804] [2021-10-07 15:16:29,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:16:29,284 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:16:29,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:16:29,285 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:16:29,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2021-10-07 15:16:31,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:16:31,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:16:31,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 76 conjunts are in the unsatisfiable core [2021-10-07 15:16:31,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:16:31,979 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 197 treesize of output 181 [2021-10-07 15:16:32,267 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 13 treesize of output 9 [2021-10-07 15:16:32,340 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 15:16:32,533 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:16:32,533 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 15:16:33,288 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:16:33,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687196804] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:33,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:16:33,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:16:33,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034678635] [2021-10-07 15:16:33,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:16:33,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:16:33,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:16:33,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:16:33,291 INFO L87 Difference]: Start difference. First operand 389 states and 949 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 15:16:37,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:16:37,058 INFO L93 Difference]: Finished difference Result 547 states and 1218 transitions. [2021-10-07 15:16:37,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 15:16:37,058 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 15:16:37,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:16:37,059 INFO L225 Difference]: With dead ends: 547 [2021-10-07 15:16:37,059 INFO L226 Difference]: Without dead ends: 543 [2021-10-07 15:16:37,060 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 4264.5ms TimeCoverageRelationStatistics Valid=516, Invalid=2346, Unknown=0, NotChecked=0, Total=2862 [2021-10-07 15:16:37,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-10-07 15:16:37,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 400. [2021-10-07 15:16:37,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 396 states have (on average 2.4545454545454546) internal successors, (972), 399 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:16:37,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 972 transitions. [2021-10-07 15:16:37,068 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 972 transitions. Word has length 19 [2021-10-07 15:16:37,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:16:37,068 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 972 transitions. [2021-10-07 15:16:37,069 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 15:16:37,069 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 972 transitions. [2021-10-07 15:16:37,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:16:37,069 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:16:37,069 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:16:37,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2021-10-07 15:16:37,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,125 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:16:37,272 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:16:37,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:16:37,273 INFO L82 PathProgramCache]: Analyzing trace with hash 924881398, now seen corresponding path program 57 times [2021-10-07 15:16:37,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:16:37,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212177508] [2021-10-07 15:16:37,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:16:37,274 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:16:37,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:16:38,302 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:16:38,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:16:38,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212177508] [2021-10-07 15:16:38,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212177508] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:38,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573119058] [2021-10-07 15:16:38,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:16:38,303 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:16:38,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:16:38,304 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:16:38,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2021-10-07 15:16:41,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-07 15:16:41,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:16:41,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 79 conjunts are in the unsatisfiable core [2021-10-07 15:16:41,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:16:41,355 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 15:16:41,433 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 15:16:41,627 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:16:41,627 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 15:16:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:16:42,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573119058] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:42,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:16:42,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:16:42,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607540500] [2021-10-07 15:16:42,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:16:42,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:16:42,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:16:42,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=775, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:16:42,360 INFO L87 Difference]: Start difference. First operand 400 states and 972 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 15:16:44,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:16:44,696 INFO L93 Difference]: Finished difference Result 524 states and 1180 transitions. [2021-10-07 15:16:44,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 15:16:44,696 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 15:16:44,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:16:44,698 INFO L225 Difference]: With dead ends: 524 [2021-10-07 15:16:44,698 INFO L226 Difference]: Without dead ends: 516 [2021-10-07 15:16:44,698 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 2736.7ms TimeCoverageRelationStatistics Valid=302, Invalid=2148, Unknown=0, NotChecked=0, Total=2450 [2021-10-07 15:16:44,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-10-07 15:16:44,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 396. [2021-10-07 15:16:44,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 392 states have (on average 2.4591836734693877) internal successors, (964), 395 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:16:44,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 964 transitions. [2021-10-07 15:16:44,705 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 964 transitions. Word has length 19 [2021-10-07 15:16:44,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:16:44,705 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 964 transitions. [2021-10-07 15:16:44,705 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 15:16:44,705 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 964 transitions. [2021-10-07 15:16:44,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:16:44,706 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:16:44,706 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:16:44,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2021-10-07 15:16:44,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2021-10-07 15:16:44,907 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:16:44,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:16:44,907 INFO L82 PathProgramCache]: Analyzing trace with hash 908810998, now seen corresponding path program 58 times [2021-10-07 15:16:44,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:16:44,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542644757] [2021-10-07 15:16:44,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:16:44,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:16:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:16:46,022 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:16:46,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:16:46,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542644757] [2021-10-07 15:16:46,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542644757] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:46,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102299557] [2021-10-07 15:16:46,024 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:16:46,024 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:16:46,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:16:46,025 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:16:46,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2021-10-07 15:16:48,794 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:16:48,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:16:48,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 71 conjunts are in the unsatisfiable core [2021-10-07 15:16:48,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:16:48,810 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 475 treesize of output 459 [2021-10-07 15:16:49,087 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 13 treesize of output 9 [2021-10-07 15:16:49,153 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 15:16:49,340 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:16:49,340 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 15:16:50,060 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:16:50,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102299557] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:50,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:16:50,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:16:50,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321504757] [2021-10-07 15:16:50,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:16:50,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:16:50,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:16:50,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=780, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:16:50,063 INFO L87 Difference]: Start difference. First operand 396 states and 964 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 15:16:51,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:16:51,906 INFO L93 Difference]: Finished difference Result 504 states and 1147 transitions. [2021-10-07 15:16:51,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 15:16:51,906 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 15:16:51,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:16:51,908 INFO L225 Difference]: With dead ends: 504 [2021-10-07 15:16:51,908 INFO L226 Difference]: Without dead ends: 500 [2021-10-07 15:16:51,908 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 2278.5ms TimeCoverageRelationStatistics Valid=239, Invalid=1923, Unknown=0, NotChecked=0, Total=2162 [2021-10-07 15:16:51,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-10-07 15:16:51,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 400. [2021-10-07 15:16:51,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 396 states have (on average 2.4545454545454546) internal successors, (972), 399 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:16:51,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 972 transitions. [2021-10-07 15:16:51,916 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 972 transitions. Word has length 19 [2021-10-07 15:16:51,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:16:51,916 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 972 transitions. [2021-10-07 15:16:51,916 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 15:16:51,916 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 972 transitions. [2021-10-07 15:16:51,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:16:51,917 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:16:51,917 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:16:51,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2021-10-07 15:16:52,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,127 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:16:52,131 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:16:52,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:16:52,131 INFO L82 PathProgramCache]: Analyzing trace with hash 908794258, now seen corresponding path program 59 times [2021-10-07 15:16:52,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:16:52,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312077720] [2021-10-07 15:16:52,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:16:52,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:16:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:16:53,469 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:16:53,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:16:53,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312077720] [2021-10-07 15:16:53,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312077720] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:53,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341246920] [2021-10-07 15:16:53,471 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:16:53,471 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:16:53,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:16:53,473 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:16:53,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2021-10-07 15:16:56,309 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:16:56,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:16:56,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 70 conjunts are in the unsatisfiable core [2021-10-07 15:16:56,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:16:56,331 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 47 treesize of output 45 [2021-10-07 15:16:56,620 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 15:16:56,684 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 15:16:56,843 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:16:56,843 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 15:16:57,779 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:16:57,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341246920] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:16:57,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:16:57,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:16:57,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513185466] [2021-10-07 15:16:57,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:16:57,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:16:57,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:16:57,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:16:57,780 INFO L87 Difference]: Start difference. First operand 400 states and 972 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 15:16:59,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:16:59,977 INFO L93 Difference]: Finished difference Result 485 states and 1109 transitions. [2021-10-07 15:16:59,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:16:59,978 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 15:16:59,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:16:59,979 INFO L225 Difference]: With dead ends: 485 [2021-10-07 15:16:59,979 INFO L226 Difference]: Without dead ends: 479 [2021-10-07 15:16:59,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 2554.3ms TimeCoverageRelationStatistics Valid=234, Invalid=1836, Unknown=0, NotChecked=0, Total=2070 [2021-10-07 15:16:59,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2021-10-07 15:16:59,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 402. [2021-10-07 15:16:59,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 398 states have (on average 2.449748743718593) internal successors, (975), 401 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:16:59,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 975 transitions. [2021-10-07 15:16:59,987 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 975 transitions. Word has length 19 [2021-10-07 15:16:59,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:16:59,987 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 975 transitions. [2021-10-07 15:16:59,987 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 15:16:59,988 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 975 transitions. [2021-10-07 15:16:59,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:16:59,988 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:16:59,988 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:17:00,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2021-10-07 15:17:00,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,128 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:17:00,202 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:17:00,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:17:00,203 INFO L82 PathProgramCache]: Analyzing trace with hash 908275318, now seen corresponding path program 60 times [2021-10-07 15:17:00,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:17:00,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886666887] [2021-10-07 15:17:00,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:17:00,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:17:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:17:01,605 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:17:01,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:17:01,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886666887] [2021-10-07 15:17:01,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886666887] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:01,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438390717] [2021-10-07 15:17:01,606 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:17:01,606 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:17:01,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:17:01,607 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:17:01,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2021-10-07 15:17:04,448 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:17:04,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:17:04,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 66 conjunts are in the unsatisfiable core [2021-10-07 15:17:04,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:17:04,465 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 47 treesize of output 45 [2021-10-07 15:17:04,727 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 15:17:04,787 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 15:17:05,021 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:17:05,021 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 15:17:05,923 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:17:05,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438390717] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:05,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:17:05,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:17:05,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440141583] [2021-10-07 15:17:05,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:17:05,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:17:05,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:17:05,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=776, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:17:05,925 INFO L87 Difference]: Start difference. First operand 402 states and 975 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 15:17:09,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:17:09,469 INFO L93 Difference]: Finished difference Result 479 states and 1100 transitions. [2021-10-07 15:17:09,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:17:09,470 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 15:17:09,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:17:09,471 INFO L225 Difference]: With dead ends: 479 [2021-10-07 15:17:09,471 INFO L226 Difference]: Without dead ends: 461 [2021-10-07 15:17:09,471 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 3910.9ms TimeCoverageRelationStatistics Valid=319, Invalid=2231, Unknown=0, NotChecked=0, Total=2550 [2021-10-07 15:17:09,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-10-07 15:17:09,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 394. [2021-10-07 15:17:09,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 390 states have (on average 2.453846153846154) internal successors, (957), 393 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:17:09,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 957 transitions. [2021-10-07 15:17:09,476 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 957 transitions. Word has length 19 [2021-10-07 15:17:09,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:17:09,476 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 957 transitions. [2021-10-07 15:17:09,476 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 15:17:09,477 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 957 transitions. [2021-10-07 15:17:09,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:17:09,477 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:17:09,477 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:17:09,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2021-10-07 15:17:09,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,129 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:17:09,678 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:17:09,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:17:09,679 INFO L82 PathProgramCache]: Analyzing trace with hash 410109658, now seen corresponding path program 61 times [2021-10-07 15:17:09,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:17:09,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541108418] [2021-10-07 15:17:09,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:17:09,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:17:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:17:10,511 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:17:10,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:17:10,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541108418] [2021-10-07 15:17:10,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541108418] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:10,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074283028] [2021-10-07 15:17:10,512 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:17:10,512 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:17:10,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:17:10,513 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:17:10,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2021-10-07 15:17:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:17:13,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 71 conjunts are in the unsatisfiable core [2021-10-07 15:17:13,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:17:13,444 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 103 treesize of output 101 [2021-10-07 15:17:13,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 15:17:13,858 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 15:17:14,043 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:17:14,044 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 15:17:14,765 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:17:14,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074283028] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:14,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:17:14,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:17:14,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748293750] [2021-10-07 15:17:14,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:17:14,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:17:14,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:17:14,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:17:14,767 INFO L87 Difference]: Start difference. First operand 394 states and 957 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 15:17:17,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:17:17,093 INFO L93 Difference]: Finished difference Result 491 states and 1116 transitions. [2021-10-07 15:17:17,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:17:17,094 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 15:17:17,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:17:17,094 INFO L225 Difference]: With dead ends: 491 [2021-10-07 15:17:17,095 INFO L226 Difference]: Without dead ends: 487 [2021-10-07 15:17:17,095 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 2842.3ms TimeCoverageRelationStatistics Valid=394, Invalid=1958, Unknown=0, NotChecked=0, Total=2352 [2021-10-07 15:17:17,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-10-07 15:17:17,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 403. [2021-10-07 15:17:17,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 399 states have (on average 2.4486215538847116) internal successors, (977), 402 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:17:17,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 977 transitions. [2021-10-07 15:17:17,100 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 977 transitions. Word has length 19 [2021-10-07 15:17:17,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:17:17,100 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 977 transitions. [2021-10-07 15:17:17,100 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 15:17:17,100 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 977 transitions. [2021-10-07 15:17:17,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:17:17,101 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:17:17,101 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:17:17,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Forceful destruction successful, exit code 0 [2021-10-07 15:17:17,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,130 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:17:17,302 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:17:17,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:17:17,302 INFO L82 PathProgramCache]: Analyzing trace with hash 410092918, now seen corresponding path program 62 times [2021-10-07 15:17:17,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:17:17,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573580078] [2021-10-07 15:17:17,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:17:17,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:17:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:17:18,493 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:17:18,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:17:18,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573580078] [2021-10-07 15:17:18,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573580078] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:18,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460997157] [2021-10-07 15:17:18,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:17:18,552 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:17:18,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:17:18,555 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:17:18,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2021-10-07 15:17:21,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:17:21,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:17:21,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 76 conjunts are in the unsatisfiable core [2021-10-07 15:17:21,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:17:21,513 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 153 treesize of output 145 [2021-10-07 15:17:21,764 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 13 treesize of output 9 [2021-10-07 15:17:21,829 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 15:17:21,996 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:17:21,996 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 15:17:22,698 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:17:22,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460997157] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:22,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:17:22,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:17:22,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993639990] [2021-10-07 15:17:22,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:17:22,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:17:22,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:17:22,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=759, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:17:22,700 INFO L87 Difference]: Start difference. First operand 403 states and 977 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 15:17:24,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:17:24,510 INFO L93 Difference]: Finished difference Result 482 states and 1106 transitions. [2021-10-07 15:17:24,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:17:24,511 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 15:17:24,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:17:24,511 INFO L225 Difference]: With dead ends: 482 [2021-10-07 15:17:24,512 INFO L226 Difference]: Without dead ends: 476 [2021-10-07 15:17:24,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 2239.9ms TimeCoverageRelationStatistics Valid=294, Invalid=1962, Unknown=0, NotChecked=0, Total=2256 [2021-10-07 15:17:24,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-10-07 15:17:24,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 403. [2021-10-07 15:17:24,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 399 states have (on average 2.443609022556391) internal successors, (975), 402 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:17:24,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 975 transitions. [2021-10-07 15:17:24,517 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 975 transitions. Word has length 19 [2021-10-07 15:17:24,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:17:24,517 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 975 transitions. [2021-10-07 15:17:24,517 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 15:17:24,517 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 975 transitions. [2021-10-07 15:17:24,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:17:24,518 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:17:24,518 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:17:24,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2021-10-07 15:17:24,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2021-10-07 15:17:24,719 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:17:24,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:17:24,719 INFO L82 PathProgramCache]: Analyzing trace with hash 409573978, now seen corresponding path program 63 times [2021-10-07 15:17:24,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:17:24,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385757711] [2021-10-07 15:17:24,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:17:24,720 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:17:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:17:25,947 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:17:25,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:17:25,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385757711] [2021-10-07 15:17:25,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385757711] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:25,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767447435] [2021-10-07 15:17:25,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:17:25,948 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:17:25,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:17:25,949 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:17:25,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2021-10-07 15:17:28,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:17:28,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:17:28,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 77 conjunts are in the unsatisfiable core [2021-10-07 15:17:28,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:17:29,215 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 15:17:29,285 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 15:17:29,454 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:17:29,455 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 15:17:30,227 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:17:30,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767447435] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:30,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:17:30,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:17:30,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824847839] [2021-10-07 15:17:30,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:17:30,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:17:30,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:17:30,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=780, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:17:30,229 INFO L87 Difference]: Start difference. First operand 403 states and 975 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 15:17:32,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:17:32,136 INFO L93 Difference]: Finished difference Result 443 states and 1036 transitions. [2021-10-07 15:17:32,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:17:32,137 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 15:17:32,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:17:32,137 INFO L225 Difference]: With dead ends: 443 [2021-10-07 15:17:32,137 INFO L226 Difference]: Without dead ends: 435 [2021-10-07 15:17:32,138 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 2251.1ms TimeCoverageRelationStatistics Valid=218, Invalid=1852, Unknown=0, NotChecked=0, Total=2070 [2021-10-07 15:17:32,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2021-10-07 15:17:32,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 401. [2021-10-07 15:17:32,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 397 states have (on average 2.443324937027708) internal successors, (970), 400 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:17:32,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 970 transitions. [2021-10-07 15:17:32,143 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 970 transitions. Word has length 19 [2021-10-07 15:17:32,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:17:32,143 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 970 transitions. [2021-10-07 15:17:32,143 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 15:17:32,143 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 970 transitions. [2021-10-07 15:17:32,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:17:32,143 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:17:32,144 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:17:32,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Forceful destruction successful, exit code 0 [2021-10-07 15:17:32,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2021-10-07 15:17:32,344 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:17:32,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:17:32,345 INFO L82 PathProgramCache]: Analyzing trace with hash 393486838, now seen corresponding path program 64 times [2021-10-07 15:17:32,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:17:32,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824208297] [2021-10-07 15:17:32,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:17:32,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:17:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:17:33,520 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:17:33,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:17:33,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824208297] [2021-10-07 15:17:33,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824208297] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:33,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208219396] [2021-10-07 15:17:33,521 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:17:33,521 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:17:33,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:17:33,522 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:17:33,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2021-10-07 15:17:36,579 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:17:36,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:17:36,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 71 conjunts are in the unsatisfiable core [2021-10-07 15:17:36,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:17:36,598 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 367 treesize of output 351 [2021-10-07 15:17:36,862 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 13 treesize of output 9 [2021-10-07 15:17:36,928 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 15:17:37,108 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:17:37,109 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 15:17:37,789 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:17:37,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208219396] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:37,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:17:37,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:17:37,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256456686] [2021-10-07 15:17:37,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:17:37,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:17:37,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:17:37,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=776, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:17:37,791 INFO L87 Difference]: Start difference. First operand 401 states and 970 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 15:17:39,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:17:39,191 INFO L93 Difference]: Finished difference Result 437 states and 1026 transitions. [2021-10-07 15:17:39,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 15:17:39,192 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 15:17:39,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:17:39,193 INFO L225 Difference]: With dead ends: 437 [2021-10-07 15:17:39,193 INFO L226 Difference]: Without dead ends: 437 [2021-10-07 15:17:39,193 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 1914.5ms TimeCoverageRelationStatistics Valid=202, Invalid=1604, Unknown=0, NotChecked=0, Total=1806 [2021-10-07 15:17:39,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-10-07 15:17:39,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 386. [2021-10-07 15:17:39,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 382 states have (on average 2.4607329842931938) internal successors, (940), 385 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:17:39,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 940 transitions. [2021-10-07 15:17:39,198 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 940 transitions. Word has length 19 [2021-10-07 15:17:39,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:17:39,198 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 940 transitions. [2021-10-07 15:17:39,198 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 15:17:39,198 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 940 transitions. [2021-10-07 15:17:39,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:17:39,200 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:17:39,200 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:17:39,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Forceful destruction successful, exit code 0 [2021-10-07 15:17:39,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2021-10-07 15:17:39,413 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:17:39,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:17:39,414 INFO L82 PathProgramCache]: Analyzing trace with hash 739754068, now seen corresponding path program 65 times [2021-10-07 15:17:39,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:17:39,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530409520] [2021-10-07 15:17:39,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:17:39,415 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:17:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:17:40,673 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:17:40,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:17:40,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530409520] [2021-10-07 15:17:40,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530409520] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:40,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16549790] [2021-10-07 15:17:40,674 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:17:40,674 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:17:40,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:17:40,675 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:17:40,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2021-10-07 15:17:43,747 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:17:43,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:17:43,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 74 conjunts are in the unsatisfiable core [2021-10-07 15:17:43,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:17:43,766 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 121 treesize of output 113 [2021-10-07 15:17:44,245 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-07 15:17:44,245 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 15:17:44,849 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:17:44,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16549790] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:44,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:17:44,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:17:44,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034014459] [2021-10-07 15:17:44,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:17:44,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:17:44,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:17:44,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=787, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:17:44,851 INFO L87 Difference]: Start difference. First operand 386 states and 940 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 15:17:47,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:17:47,213 INFO L93 Difference]: Finished difference Result 452 states and 1047 transitions. [2021-10-07 15:17:47,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:17:47,213 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 15:17:47,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:17:47,214 INFO L225 Difference]: With dead ends: 452 [2021-10-07 15:17:47,215 INFO L226 Difference]: Without dead ends: 448 [2021-10-07 15:17:47,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 2618.5ms TimeCoverageRelationStatistics Valid=275, Invalid=2275, Unknown=0, NotChecked=0, Total=2550 [2021-10-07 15:17:47,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-10-07 15:17:47,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 386. [2021-10-07 15:17:47,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 382 states have (on average 2.4554973821989527) internal successors, (938), 385 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:17:47,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 938 transitions. [2021-10-07 15:17:47,220 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 938 transitions. Word has length 19 [2021-10-07 15:17:47,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:17:47,220 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 938 transitions. [2021-10-07 15:17:47,221 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 15:17:47,221 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 938 transitions. [2021-10-07 15:17:47,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:17:47,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:17:47,221 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:17:47,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Forceful destruction successful, exit code 0 [2021-10-07 15:17:47,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2021-10-07 15:17:47,422 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:17:47,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:17:47,423 INFO L82 PathProgramCache]: Analyzing trace with hash 739737328, now seen corresponding path program 66 times [2021-10-07 15:17:47,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:17:47,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543708752] [2021-10-07 15:17:47,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:17:47,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:17:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:17:48,249 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:17:48,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:17:48,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543708752] [2021-10-07 15:17:48,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543708752] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:48,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108070955] [2021-10-07 15:17:48,250 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:17:48,250 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:17:48,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:17:48,251 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:17:48,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2021-10-07 15:17:51,376 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 15:17:51,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:17:51,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 71 conjunts are in the unsatisfiable core [2021-10-07 15:17:51,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:17:51,391 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 75 treesize of output 71 [2021-10-07 15:17:51,735 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 15:17:51,803 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 15:17:52,072 INFO L354 Elim1Store]: treesize reduction 88, result has 20.7 percent of original size [2021-10-07 15:17:52,073 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 48 treesize of output 50 [2021-10-07 15:17:52,967 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:17:52,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108070955] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:52,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:17:52,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:17:52,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916861975] [2021-10-07 15:17:52,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:17:52,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:17:52,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:17:52,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=794, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:17:52,969 INFO L87 Difference]: Start difference. First operand 386 states and 938 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 15:17:55,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:17:55,881 INFO L93 Difference]: Finished difference Result 451 states and 1042 transitions. [2021-10-07 15:17:55,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:17:55,882 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 15:17:55,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:17:55,882 INFO L225 Difference]: With dead ends: 451 [2021-10-07 15:17:55,883 INFO L226 Difference]: Without dead ends: 441 [2021-10-07 15:17:55,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 3193.4ms TimeCoverageRelationStatistics Valid=241, Invalid=2209, Unknown=0, NotChecked=0, Total=2450 [2021-10-07 15:17:55,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-10-07 15:17:55,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 380. [2021-10-07 15:17:55,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 376 states have (on average 2.4654255319148937) internal successors, (927), 379 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:17:55,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 927 transitions. [2021-10-07 15:17:55,888 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 927 transitions. Word has length 19 [2021-10-07 15:17:55,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:17:55,888 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 927 transitions. [2021-10-07 15:17:55,888 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 15:17:55,888 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 927 transitions. [2021-10-07 15:17:55,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:17:55,889 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:17:55,889 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:17:55,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Forceful destruction successful, exit code 0 [2021-10-07 15:17:56,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2021-10-07 15:17:56,090 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:17:56,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:17:56,090 INFO L82 PathProgramCache]: Analyzing trace with hash 224965588, now seen corresponding path program 67 times [2021-10-07 15:17:56,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:17:56,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299339241] [2021-10-07 15:17:56,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:17:56,091 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:17:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:17:57,276 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:17:57,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:17:57,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299339241] [2021-10-07 15:17:57,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299339241] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:17:57,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636089104] [2021-10-07 15:17:57,277 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:17:57,277 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:17:57,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:17:57,278 INFO L229 MonitoredProcess]: Starting monitored process 136 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 15:17:57,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2021-10-07 15:18:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:18:00,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 71 conjunts are in the unsatisfiable core [2021-10-07 15:18:00,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:18:00,434 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 47 treesize of output 45 [2021-10-07 15:18:00,821 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 13 treesize of output 9 [2021-10-07 15:18:00,895 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 15:18:01,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:18:01,210 INFO L354 Elim1Store]: treesize reduction 78, result has 24.3 percent of original size [2021-10-07 15:18:01,210 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 40 treesize of output 42 [2021-10-07 15:18:01,896 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:18:01,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636089104] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:01,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:18:01,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 29 [2021-10-07 15:18:01,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623031141] [2021-10-07 15:18:01,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-07 15:18:01,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:18:01,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-07 15:18:01,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:18:01,898 INFO L87 Difference]: Start difference. First operand 380 states and 927 transitions. Second operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 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 15:18:05,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:18:05,889 INFO L93 Difference]: Finished difference Result 452 states and 1039 transitions. [2021-10-07 15:18:05,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 15:18:05,890 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 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 15:18:05,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:18:05,890 INFO L225 Difference]: With dead ends: 452 [2021-10-07 15:18:05,891 INFO L226 Difference]: Without dead ends: 446 [2021-10-07 15:18:05,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 4572.0ms TimeCoverageRelationStatistics Valid=495, Invalid=2585, Unknown=0, NotChecked=0, Total=3080 [2021-10-07 15:18:05,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-10-07 15:18:05,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 380. [2021-10-07 15:18:05,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 376 states have (on average 2.4601063829787235) internal successors, (925), 379 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:18:05,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 925 transitions. [2021-10-07 15:18:05,896 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 925 transitions. Word has length 19 [2021-10-07 15:18:05,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:18:05,896 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 925 transitions. [2021-10-07 15:18:05,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 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 15:18:05,896 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 925 transitions. [2021-10-07 15:18:05,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:18:05,897 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:18:05,897 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:18:05,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Forceful destruction successful, exit code 0 [2021-10-07 15:18:06,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138,136 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:18:06,097 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:18:06,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:18:06,098 INFO L82 PathProgramCache]: Analyzing trace with hash 224429908, now seen corresponding path program 68 times [2021-10-07 15:18:06,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:18:06,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567805858] [2021-10-07 15:18:06,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:18:06,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:18:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:18:07,277 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:18:07,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:18:07,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567805858] [2021-10-07 15:18:07,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567805858] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:07,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171177222] [2021-10-07 15:18:07,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:18:07,279 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:18:07,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:18:07,279 INFO L229 MonitoredProcess]: Starting monitored process 137 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 15:18:07,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2021-10-07 15:18:10,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:18:10,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:18:10,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 77 conjunts are in the unsatisfiable core [2021-10-07 15:18:10,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:18:10,511 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 92 treesize of output 88 [2021-10-07 15:18:10,651 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 16 treesize of output 12 [2021-10-07 15:18:10,724 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 16 treesize of output 12 [2021-10-07 15:18:10,785 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 13 treesize of output 9 [2021-10-07 15:18:10,847 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 15:18:11,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:18:11,129 INFO L354 Elim1Store]: treesize reduction 75, result has 24.2 percent of original size [2021-10-07 15:18:11,129 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 15:18:11,867 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:18:11,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171177222] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:11,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:18:11,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:18:11,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650043536] [2021-10-07 15:18:11,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:18:11,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:18:11,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:18:11,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:18:11,869 INFO L87 Difference]: Start difference. First operand 380 states and 925 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 15:18:13,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:18:13,835 INFO L93 Difference]: Finished difference Result 427 states and 998 transitions. [2021-10-07 15:18:13,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:18:13,835 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 15:18:13,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:18:13,836 INFO L225 Difference]: With dead ends: 427 [2021-10-07 15:18:13,836 INFO L226 Difference]: Without dead ends: 413 [2021-10-07 15:18:13,837 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 2416.7ms TimeCoverageRelationStatistics Valid=227, Invalid=2029, Unknown=0, NotChecked=0, Total=2256 [2021-10-07 15:18:13,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-10-07 15:18:13,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 374. [2021-10-07 15:18:13,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 370 states have (on average 2.464864864864865) internal successors, (912), 373 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:18:13,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 912 transitions. [2021-10-07 15:18:13,841 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 912 transitions. Word has length 19 [2021-10-07 15:18:13,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:18:13,842 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 912 transitions. [2021-10-07 15:18:13,842 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 15:18:13,842 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 912 transitions. [2021-10-07 15:18:13,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:18:13,842 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:18:13,843 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:18:13,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Forceful destruction successful, exit code 0 [2021-10-07 15:18:14,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2021-10-07 15:18:14,047 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:18:14,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:18:14,048 INFO L82 PathProgramCache]: Analyzing trace with hash 208342768, now seen corresponding path program 69 times [2021-10-07 15:18:14,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:18:14,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593814554] [2021-10-07 15:18:14,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:18:14,049 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:18:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:18:15,462 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:18:15,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:18:15,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593814554] [2021-10-07 15:18:15,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593814554] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:15,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863325697] [2021-10-07 15:18:15,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:18:15,464 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:18:15,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:18:15,465 INFO L229 MonitoredProcess]: Starting monitored process 138 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 15:18:15,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2021-10-07 15:18:18,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:18:18,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:18:18,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 69 conjunts are in the unsatisfiable core [2021-10-07 15:18:18,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:18:18,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:18:18,782 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 39 treesize of output 37 [2021-10-07 15:18:18,991 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 15:18:19,042 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 15:18:19,275 INFO L354 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2021-10-07 15:18:19,276 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 15:18:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:18:20,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863325697] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:20,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:18:20,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:18:20,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357698021] [2021-10-07 15:18:20,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:18:20,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:18:20,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:18:20,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:18:20,060 INFO L87 Difference]: Start difference. First operand 374 states and 912 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 15:18:23,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:18:23,914 INFO L93 Difference]: Finished difference Result 411 states and 968 transitions. [2021-10-07 15:18:23,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:18:23,915 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 15:18:23,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:18:23,915 INFO L225 Difference]: With dead ends: 411 [2021-10-07 15:18:23,916 INFO L226 Difference]: Without dead ends: 405 [2021-10-07 15:18:23,916 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 2678.8ms TimeCoverageRelationStatistics Valid=222, Invalid=1848, Unknown=0, NotChecked=0, Total=2070 [2021-10-07 15:18:23,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-10-07 15:18:23,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 355. [2021-10-07 15:18:23,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 351 states have (on average 2.4985754985754984) internal successors, (877), 354 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:18:23,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 877 transitions. [2021-10-07 15:18:23,920 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 877 transitions. Word has length 19 [2021-10-07 15:18:23,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:18:23,920 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 877 transitions. [2021-10-07 15:18:23,921 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 15:18:23,921 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 877 transitions. [2021-10-07 15:18:23,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:18:23,921 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:18:23,921 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:18:23,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Forceful destruction successful, exit code 0 [2021-10-07 15:18:24,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,138 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:18:24,122 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:18:24,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:18:24,123 INFO L82 PathProgramCache]: Analyzing trace with hash 814263079, now seen corresponding path program 20 times [2021-10-07 15:18:24,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:18:24,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042308310] [2021-10-07 15:18:24,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:18:24,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:18:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:18:24,743 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:18:24,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:18:24,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042308310] [2021-10-07 15:18:24,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042308310] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:24,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364373593] [2021-10-07 15:18:24,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:18:24,744 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:18:24,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:18:24,745 INFO L229 MonitoredProcess]: Starting monitored process 139 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 15:18:24,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2021-10-07 15:18:28,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:18:28,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:18:28,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 71 conjunts are in the unsatisfiable core [2021-10-07 15:18:28,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:18:28,351 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 19 treesize of output 15 [2021-10-07 15:18:28,474 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 15:18:28,475 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 15:18:28,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:18:28,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:18:28,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:18:28,946 INFO L354 Elim1Store]: treesize reduction 176, result has 19.6 percent of original size [2021-10-07 15:18:28,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 61 treesize of output 69 [2021-10-07 15:18:29,379 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:18:29,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364373593] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:29,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:18:29,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 27 [2021-10-07 15:18:29,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550019027] [2021-10-07 15:18:29,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-07 15:18:29,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:18:29,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-07 15:18:29,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:18:29,381 INFO L87 Difference]: Start difference. First operand 355 states and 877 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 15:18:31,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:18:31,355 INFO L93 Difference]: Finished difference Result 438 states and 1020 transitions. [2021-10-07 15:18:31,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:18:31,356 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 15:18:31,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:18:31,357 INFO L225 Difference]: With dead ends: 438 [2021-10-07 15:18:31,357 INFO L226 Difference]: Without dead ends: 403 [2021-10-07 15:18:31,357 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 1831.5ms TimeCoverageRelationStatistics Valid=188, Invalid=1452, Unknown=0, NotChecked=0, Total=1640 [2021-10-07 15:18:31,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-10-07 15:18:31,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 347. [2021-10-07 15:18:31,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 343 states have (on average 2.492711370262391) internal successors, (855), 346 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:18:31,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 855 transitions. [2021-10-07 15:18:31,363 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 855 transitions. Word has length 19 [2021-10-07 15:18:31,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:18:31,363 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 855 transitions. [2021-10-07 15:18:31,363 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 15:18:31,363 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 855 transitions. [2021-10-07 15:18:31,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:18:31,364 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:18:31,364 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:18:31,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Ended with exit code 0 [2021-10-07 15:18:31,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,139 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:18:31,565 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:18:31,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:18:31,565 INFO L82 PathProgramCache]: Analyzing trace with hash 814263055, now seen corresponding path program 13 times [2021-10-07 15:18:31,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:18:31,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495730317] [2021-10-07 15:18:31,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:18:31,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:18:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:18:32,126 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:18:32,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:18:32,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495730317] [2021-10-07 15:18:32,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495730317] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:32,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076327870] [2021-10-07 15:18:32,127 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:18:32,128 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:18:32,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:18:32,128 INFO L229 MonitoredProcess]: Starting monitored process 140 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 15:18:32,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2021-10-07 15:18:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:18:35,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-07 15:18:35,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:18:35,475 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 47 treesize of output 45 [2021-10-07 15:18:35,786 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-10-07 15:18:35,787 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 15:18:35,924 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:18:35,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076327870] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:35,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:18:35,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 27 [2021-10-07 15:18:35,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539318665] [2021-10-07 15:18:35,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-07 15:18:35,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:18:35,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-07 15:18:35,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=726, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:18:35,926 INFO L87 Difference]: Start difference. First operand 347 states and 855 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 15:18:37,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:18:37,384 INFO L93 Difference]: Finished difference Result 493 states and 1089 transitions. [2021-10-07 15:18:37,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 15:18:37,384 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 15:18:37,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:18:37,385 INFO L225 Difference]: With dead ends: 493 [2021-10-07 15:18:37,385 INFO L226 Difference]: Without dead ends: 471 [2021-10-07 15:18:37,386 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 1185.1ms TimeCoverageRelationStatistics Valid=184, Invalid=1622, Unknown=0, NotChecked=0, Total=1806 [2021-10-07 15:18:37,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-10-07 15:18:37,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 338. [2021-10-07 15:18:37,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 334 states have (on average 2.5119760479041915) internal successors, (839), 337 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:18:37,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 839 transitions. [2021-10-07 15:18:37,390 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 839 transitions. Word has length 19 [2021-10-07 15:18:37,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:18:37,391 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 839 transitions. [2021-10-07 15:18:37,391 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 15:18:37,391 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 839 transitions. [2021-10-07 15:18:37,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:18:37,391 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:18:37,391 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:18:37,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Forceful destruction successful, exit code 0 [2021-10-07 15:18:37,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,140 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:18:37,592 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:18:37,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:18:37,593 INFO L82 PathProgramCache]: Analyzing trace with hash -872685531, now seen corresponding path program 70 times [2021-10-07 15:18:37,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:18:37,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635617020] [2021-10-07 15:18:37,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:18:37,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:18:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:18:38,590 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:18:38,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:18:38,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635617020] [2021-10-07 15:18:38,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635617020] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:38,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133385059] [2021-10-07 15:18:38,591 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:18:38,591 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:18:38,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:18:38,592 INFO L229 MonitoredProcess]: Starting monitored process 141 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 15:18:38,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2021-10-07 15:18:42,080 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:18:42,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:18:42,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-07 15:18:42,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:18:42,750 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:18:42,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133385059] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:42,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:18:42,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 26 [2021-10-07 15:18:42,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753612253] [2021-10-07 15:18:42,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 15:18:42,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:18:42,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 15:18:42,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:18:42,752 INFO L87 Difference]: Start difference. First operand 338 states and 839 transitions. Second operand has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 15:18:44,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:18:44,259 INFO L93 Difference]: Finished difference Result 500 states and 1184 transitions. [2021-10-07 15:18:44,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:18:44,260 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 20 [2021-10-07 15:18:44,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:18:44,261 INFO L225 Difference]: With dead ends: 500 [2021-10-07 15:18:44,261 INFO L226 Difference]: Without dead ends: 492 [2021-10-07 15:18:44,262 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1774.1ms TimeCoverageRelationStatistics Valid=205, Invalid=1687, Unknown=0, NotChecked=0, Total=1892 [2021-10-07 15:18:44,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-10-07 15:18:44,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 342. [2021-10-07 15:18:44,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 338 states have (on average 2.5059171597633134) internal successors, (847), 341 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:18:44,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 847 transitions. [2021-10-07 15:18:44,267 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 847 transitions. Word has length 20 [2021-10-07 15:18:44,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:18:44,267 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 847 transitions. [2021-10-07 15:18:44,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 15:18:44,267 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 847 transitions. [2021-10-07 15:18:44,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:18:44,268 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:18:44,268 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:18:44,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Ended with exit code 0 [2021-10-07 15:18:44,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable143 [2021-10-07 15:18:44,468 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:18:44,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:18:44,469 INFO L82 PathProgramCache]: Analyzing trace with hash -872702271, now seen corresponding path program 71 times [2021-10-07 15:18:44,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:18:44,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721888994] [2021-10-07 15:18:44,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:18:44,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:18:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:18:45,600 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:18:45,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:18:45,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721888994] [2021-10-07 15:18:45,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721888994] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:45,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449026406] [2021-10-07 15:18:45,601 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:18:45,601 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:18:45,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:18:45,602 INFO L229 MonitoredProcess]: Starting monitored process 142 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 15:18:45,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2021-10-07 15:18:49,035 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:18:49,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:18:49,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 60 conjunts are in the unsatisfiable core [2021-10-07 15:18:49,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:18:49,764 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:18:49,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449026406] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:49,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:18:49,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 26 [2021-10-07 15:18:49,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903284483] [2021-10-07 15:18:49,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 15:18:49,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:18:49,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 15:18:49,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:18:49,766 INFO L87 Difference]: Start difference. First operand 342 states and 847 transitions. Second operand has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 15:18:51,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:18:51,375 INFO L93 Difference]: Finished difference Result 606 states and 1434 transitions. [2021-10-07 15:18:51,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 15:18:51,375 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 20 [2021-10-07 15:18:51,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:18:51,377 INFO L225 Difference]: With dead ends: 606 [2021-10-07 15:18:51,377 INFO L226 Difference]: Without dead ends: 590 [2021-10-07 15:18:51,377 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1859.4ms TimeCoverageRelationStatistics Valid=195, Invalid=1697, Unknown=0, NotChecked=0, Total=1892 [2021-10-07 15:18:51,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-10-07 15:18:51,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 338. [2021-10-07 15:18:51,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 334 states have (on average 2.5119760479041915) internal successors, (839), 337 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:18:51,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 839 transitions. [2021-10-07 15:18:51,383 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 839 transitions. Word has length 20 [2021-10-07 15:18:51,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:18:51,384 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 839 transitions. [2021-10-07 15:18:51,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 15:18:51,384 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 839 transitions. [2021-10-07 15:18:51,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:18:51,384 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:18:51,384 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:18:51,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Forceful destruction successful, exit code 0 [2021-10-07 15:18:51,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2021-10-07 15:18:51,585 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:18:51,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:18:51,586 INFO L82 PathProgramCache]: Analyzing trace with hash -888772671, now seen corresponding path program 72 times [2021-10-07 15:18:51,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:18:51,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586439821] [2021-10-07 15:18:51,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:18:51,587 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:18:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:18:53,052 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:18:53,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:18:53,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586439821] [2021-10-07 15:18:53,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586439821] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:53,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014987595] [2021-10-07 15:18:53,053 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:18:53,053 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:18:53,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:18:53,054 INFO L229 MonitoredProcess]: Starting monitored process 143 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 15:18:53,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2021-10-07 15:18:56,685 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 15:18:56,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:18:56,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-07 15:18:56,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:18:57,428 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:18:57,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014987595] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:18:57,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:18:57,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 26 [2021-10-07 15:18:57,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833428374] [2021-10-07 15:18:57,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 15:18:57,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:18:57,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 15:18:57,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:18:57,430 INFO L87 Difference]: Start difference. First operand 338 states and 839 transitions. Second operand has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 15:18:59,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:18:59,183 INFO L93 Difference]: Finished difference Result 514 states and 1219 transitions. [2021-10-07 15:18:59,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 15:18:59,183 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 20 [2021-10-07 15:18:59,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:18:59,185 INFO L225 Difference]: With dead ends: 514 [2021-10-07 15:18:59,185 INFO L226 Difference]: Without dead ends: 506 [2021-10-07 15:18:59,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 2198.5ms TimeCoverageRelationStatistics Valid=192, Invalid=1700, Unknown=0, NotChecked=0, Total=1892 [2021-10-07 15:18:59,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-10-07 15:18:59,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 340. [2021-10-07 15:18:59,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 336 states have (on average 2.511904761904762) internal successors, (844), 339 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:18:59,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 844 transitions. [2021-10-07 15:18:59,190 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 844 transitions. Word has length 20 [2021-10-07 15:18:59,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:18:59,191 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 844 transitions. [2021-10-07 15:18:59,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 15:18:59,191 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 844 transitions. [2021-10-07 15:18:59,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:18:59,191 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:18:59,191 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:18:59,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Forceful destruction successful, exit code 0 [2021-10-07 15:18:59,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145,143 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:18:59,404 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:18:59,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:18:59,405 INFO L82 PathProgramCache]: Analyzing trace with hash -888789411, now seen corresponding path program 73 times [2021-10-07 15:18:59,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:18:59,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363459135] [2021-10-07 15:18:59,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:18:59,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:18:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:19:00,839 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:19:00,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:19:00,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363459135] [2021-10-07 15:19:00,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363459135] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:00,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707459747] [2021-10-07 15:19:00,840 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:19:00,841 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:19:00,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:19:00,842 INFO L229 MonitoredProcess]: Starting monitored process 144 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 15:19:00,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2021-10-07 15:19:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:19:04,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-07 15:19:04,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:19:05,019 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:19:05,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707459747] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:05,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:19:05,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 26 [2021-10-07 15:19:05,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269005813] [2021-10-07 15:19:05,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 15:19:05,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:19:05,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 15:19:05,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:19:05,021 INFO L87 Difference]: Start difference. First operand 340 states and 844 transitions. Second operand has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 15:19:06,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:19:06,615 INFO L93 Difference]: Finished difference Result 582 states and 1381 transitions. [2021-10-07 15:19:06,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:19:06,616 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 20 [2021-10-07 15:19:06,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:19:06,617 INFO L225 Difference]: With dead ends: 582 [2021-10-07 15:19:06,617 INFO L226 Difference]: Without dead ends: 566 [2021-10-07 15:19:06,617 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1928.0ms TimeCoverageRelationStatistics Valid=144, Invalid=1416, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 15:19:06,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-10-07 15:19:06,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 334. [2021-10-07 15:19:06,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 330 states have (on average 2.512121212121212) internal successors, (829), 333 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:19:06,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 829 transitions. [2021-10-07 15:19:06,624 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 829 transitions. Word has length 20 [2021-10-07 15:19:06,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:19:06,624 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 829 transitions. [2021-10-07 15:19:06,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 15:19:06,624 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 829 transitions. [2021-10-07 15:19:06,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:19:06,624 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:19:06,624 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:19:06,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Ended with exit code 0 [2021-10-07 15:19:06,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2021-10-07 15:19:06,825 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:19:06,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:19:06,826 INFO L82 PathProgramCache]: Analyzing trace with hash 847442113, now seen corresponding path program 74 times [2021-10-07 15:19:06,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:19:06,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063993394] [2021-10-07 15:19:06,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:19:06,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:19:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:19:08,231 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:19:08,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:19:08,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063993394] [2021-10-07 15:19:08,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063993394] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:08,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277413641] [2021-10-07 15:19:08,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:19:08,233 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:19:08,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:19:08,234 INFO L229 MonitoredProcess]: Starting monitored process 145 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 15:19:08,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2021-10-07 15:19:11,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:19:11,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:19:11,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-07 15:19:11,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:19:12,545 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:19:12,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277413641] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:12,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:19:12,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 26 [2021-10-07 15:19:12,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870041339] [2021-10-07 15:19:12,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 15:19:12,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:19:12,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 15:19:12,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:19:12,547 INFO L87 Difference]: Start difference. First operand 334 states and 829 transitions. Second operand has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 15:19:14,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:19:14,446 INFO L93 Difference]: Finished difference Result 523 states and 1237 transitions. [2021-10-07 15:19:14,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 15:19:14,447 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 20 [2021-10-07 15:19:14,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:19:14,448 INFO L225 Difference]: With dead ends: 523 [2021-10-07 15:19:14,448 INFO L226 Difference]: Without dead ends: 515 [2021-10-07 15:19:14,449 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 2318.7ms TimeCoverageRelationStatistics Valid=224, Invalid=1846, Unknown=0, NotChecked=0, Total=2070 [2021-10-07 15:19:14,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2021-10-07 15:19:14,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 345. [2021-10-07 15:19:14,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 341 states have (on average 2.504398826979472) internal successors, (854), 344 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:19:14,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 854 transitions. [2021-10-07 15:19:14,454 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 854 transitions. Word has length 20 [2021-10-07 15:19:14,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:19:14,454 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 854 transitions. [2021-10-07 15:19:14,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 15:19:14,454 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 854 transitions. [2021-10-07 15:19:14,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:19:14,455 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:19:14,455 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:19:14,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Forceful destruction successful, exit code 0 [2021-10-07 15:19:14,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2021-10-07 15:19:14,656 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:19:14,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:19:14,656 INFO L82 PathProgramCache]: Analyzing trace with hash 847425373, now seen corresponding path program 75 times [2021-10-07 15:19:14,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:19:14,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220076607] [2021-10-07 15:19:14,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:19:14,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:19:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:19:16,146 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:19:16,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:19:16,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220076607] [2021-10-07 15:19:16,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220076607] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:16,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527468255] [2021-10-07 15:19:16,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:19:16,147 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:19:16,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:19:16,148 INFO L229 MonitoredProcess]: Starting monitored process 146 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 15:19:16,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2021-10-07 15:19:19,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-07 15:19:19,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:19:19,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-07 15:19:19,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:19:20,515 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:19:20,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527468255] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:20,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:19:20,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 26 [2021-10-07 15:19:20,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128770857] [2021-10-07 15:19:20,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 15:19:20,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:19:20,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 15:19:20,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:19:20,517 INFO L87 Difference]: Start difference. First operand 345 states and 854 transitions. Second operand has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 15:19:22,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:19:22,180 INFO L93 Difference]: Finished difference Result 643 states and 1521 transitions. [2021-10-07 15:19:22,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 15:19:22,181 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 20 [2021-10-07 15:19:22,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:19:22,182 INFO L225 Difference]: With dead ends: 643 [2021-10-07 15:19:22,182 INFO L226 Difference]: Without dead ends: 627 [2021-10-07 15:19:22,183 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 2057.3ms TimeCoverageRelationStatistics Valid=194, Invalid=1698, Unknown=0, NotChecked=0, Total=1892 [2021-10-07 15:19:22,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-10-07 15:19:22,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 341. [2021-10-07 15:19:22,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 337 states have (on average 2.5103857566765577) internal successors, (846), 340 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:19:22,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 846 transitions. [2021-10-07 15:19:22,188 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 846 transitions. Word has length 20 [2021-10-07 15:19:22,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:19:22,189 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 846 transitions. [2021-10-07 15:19:22,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 15:19:22,189 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 846 transitions. [2021-10-07 15:19:22,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:19:22,189 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:19:22,189 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:19:22,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Forceful destruction successful, exit code 0 [2021-10-07 15:19:22,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 146 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2021-10-07 15:19:22,390 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:19:22,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:19:22,391 INFO L82 PathProgramCache]: Analyzing trace with hash 831354973, now seen corresponding path program 76 times [2021-10-07 15:19:22,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:19:22,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079460125] [2021-10-07 15:19:22,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:19:22,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:19:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:19:24,033 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:19:24,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:19:24,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079460125] [2021-10-07 15:19:24,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079460125] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:24,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788615659] [2021-10-07 15:19:24,034 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:19:24,035 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:19:24,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:19:24,036 INFO L229 MonitoredProcess]: Starting monitored process 147 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 15:19:24,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2021-10-07 15:19:27,565 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:19:27,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:19:27,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-07 15:19:27,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:19:28,348 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:19:28,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788615659] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:28,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:19:28,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 26 [2021-10-07 15:19:28,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674261278] [2021-10-07 15:19:28,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 15:19:28,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:19:28,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 15:19:28,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:19:28,350 INFO L87 Difference]: Start difference. First operand 341 states and 846 transitions. Second operand has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 15:19:30,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:19:30,498 INFO L93 Difference]: Finished difference Result 523 states and 1241 transitions. [2021-10-07 15:19:30,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 15:19:30,499 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 20 [2021-10-07 15:19:30,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:19:30,500 INFO L225 Difference]: With dead ends: 523 [2021-10-07 15:19:30,500 INFO L226 Difference]: Without dead ends: 515 [2021-10-07 15:19:30,501 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 2537.6ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-10-07 15:19:30,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2021-10-07 15:19:30,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 345. [2021-10-07 15:19:30,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 341 states have (on average 2.5102639296187683) internal successors, (856), 344 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:19:30,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 856 transitions. [2021-10-07 15:19:30,506 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 856 transitions. Word has length 20 [2021-10-07 15:19:30,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:19:30,506 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 856 transitions. [2021-10-07 15:19:30,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 15:19:30,506 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 856 transitions. [2021-10-07 15:19:30,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:19:30,506 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:19:30,507 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:19:30,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Forceful destruction successful, exit code 0 [2021-10-07 15:19:30,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2021-10-07 15:19:30,708 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:19:30,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:19:30,709 INFO L82 PathProgramCache]: Analyzing trace with hash 831338233, now seen corresponding path program 77 times [2021-10-07 15:19:30,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:19:30,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542509043] [2021-10-07 15:19:30,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:19:30,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:19:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:19:32,310 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:19:32,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:19:32,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542509043] [2021-10-07 15:19:32,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542509043] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:32,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486918961] [2021-10-07 15:19:32,311 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:19:32,311 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:19:32,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:19:32,312 INFO L229 MonitoredProcess]: Starting monitored process 148 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 15:19:32,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2021-10-07 15:19:35,843 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:19:35,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:19:35,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-07 15:19:35,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:19:36,593 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:19:36,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486918961] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:36,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:19:36,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 26 [2021-10-07 15:19:36,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918305390] [2021-10-07 15:19:36,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 15:19:36,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:19:36,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 15:19:36,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:19:36,595 INFO L87 Difference]: Start difference. First operand 345 states and 856 transitions. Second operand has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 15:19:38,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:19:38,170 INFO L93 Difference]: Finished difference Result 599 states and 1422 transitions. [2021-10-07 15:19:38,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:19:38,171 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 20 [2021-10-07 15:19:38,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:19:38,172 INFO L225 Difference]: With dead ends: 599 [2021-10-07 15:19:38,172 INFO L226 Difference]: Without dead ends: 583 [2021-10-07 15:19:38,173 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 2075.5ms TimeCoverageRelationStatistics Valid=146, Invalid=1414, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 15:19:38,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-10-07 15:19:38,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 343. [2021-10-07 15:19:38,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 339 states have (on average 2.510324483775811) internal successors, (851), 342 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:19:38,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 851 transitions. [2021-10-07 15:19:38,179 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 851 transitions. Word has length 20 [2021-10-07 15:19:38,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:19:38,179 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 851 transitions. [2021-10-07 15:19:38,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 15:19:38,179 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 851 transitions. [2021-10-07 15:19:38,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:19:38,180 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:19:38,180 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:19:38,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Forceful destruction successful, exit code 0 [2021-10-07 15:19:38,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable150 [2021-10-07 15:19:38,381 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:19:38,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:19:38,381 INFO L82 PathProgramCache]: Analyzing trace with hash 830819293, now seen corresponding path program 78 times [2021-10-07 15:19:38,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:19:38,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285178455] [2021-10-07 15:19:38,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:19:38,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:19:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:19:39,831 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:19:39,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:19:39,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285178455] [2021-10-07 15:19:39,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285178455] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:39,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843513685] [2021-10-07 15:19:39,832 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:19:39,832 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:19:39,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:19:39,833 INFO L229 MonitoredProcess]: Starting monitored process 149 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 15:19:39,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2021-10-07 15:19:43,519 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 15:19:43,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:19:43,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-07 15:19:43,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:19:44,067 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-07 15:19:44,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843513685] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:44,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:19:44,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 22 [2021-10-07 15:19:44,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211634775] [2021-10-07 15:19:44,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:19:44,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:19:44,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:19:44,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:19:44,069 INFO L87 Difference]: Start difference. First operand 343 states and 851 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 15:19:45,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:19:45,409 INFO L93 Difference]: Finished difference Result 595 states and 1419 transitions. [2021-10-07 15:19:45,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 15:19:45,410 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 15:19:45,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:19:45,411 INFO L225 Difference]: With dead ends: 595 [2021-10-07 15:19:45,411 INFO L226 Difference]: Without dead ends: 595 [2021-10-07 15:19:45,411 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1489.6ms TimeCoverageRelationStatistics Valid=113, Invalid=943, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 15:19:45,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-10-07 15:19:45,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 339. [2021-10-07 15:19:45,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 335 states have (on average 2.5104477611940297) internal successors, (841), 338 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:19:45,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 841 transitions. [2021-10-07 15:19:45,416 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 841 transitions. Word has length 20 [2021-10-07 15:19:45,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:19:45,417 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 841 transitions. [2021-10-07 15:19:45,417 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 15:19:45,417 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 841 transitions. [2021-10-07 15:19:45,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:19:45,417 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:19:45,417 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:19:45,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Forceful destruction successful, exit code 0 [2021-10-07 15:19:45,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,149 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:19:45,618 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:19:45,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:19:45,619 INFO L82 PathProgramCache]: Analyzing trace with hash 316954358, now seen corresponding path program 21 times [2021-10-07 15:19:45,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:19:45,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670961879] [2021-10-07 15:19:45,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:19:45,620 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:19:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:19:47,431 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:19:47,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:19:47,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670961879] [2021-10-07 15:19:47,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670961879] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:47,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908301196] [2021-10-07 15:19:47,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:19:47,432 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:19:47,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:19:47,433 INFO L229 MonitoredProcess]: Starting monitored process 150 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 15:19:47,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2021-10-07 15:19:51,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:19:51,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:19:51,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 15:19:51,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:19:51,765 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-07 15:19:51,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908301196] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:51,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:19:51,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 23 [2021-10-07 15:19:51,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337375423] [2021-10-07 15:19:51,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:19:51,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:19:51,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:19:51,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:19:51,766 INFO L87 Difference]: Start difference. First operand 339 states and 841 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 15:19:53,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:19:53,175 INFO L93 Difference]: Finished difference Result 485 states and 1081 transitions. [2021-10-07 15:19:53,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:19:53,176 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 20 [2021-10-07 15:19:53,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:19:53,176 INFO L225 Difference]: With dead ends: 485 [2021-10-07 15:19:53,177 INFO L226 Difference]: Without dead ends: 443 [2021-10-07 15:19:53,177 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1680.8ms TimeCoverageRelationStatistics Valid=199, Invalid=1061, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 15:19:53,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-10-07 15:19:53,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 323. [2021-10-07 15:19:53,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 319 states have (on average 2.470219435736677) internal successors, (788), 322 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:19:53,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 788 transitions. [2021-10-07 15:19:53,181 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 788 transitions. Word has length 20 [2021-10-07 15:19:53,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:19:53,181 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 788 transitions. [2021-10-07 15:19:53,182 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 15:19:53,182 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 788 transitions. [2021-10-07 15:19:53,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:19:53,182 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:19:53,182 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:19:53,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Forceful destruction successful, exit code 0 [2021-10-07 15:19:53,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,150 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:19:53,383 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:19:53,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:19:53,384 INFO L82 PathProgramCache]: Analyzing trace with hash 332653688, now seen corresponding path program 22 times [2021-10-07 15:19:53,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:19:53,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862122670] [2021-10-07 15:19:53,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:19:53,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:19:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:19:53,987 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:19:53,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:19:53,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862122670] [2021-10-07 15:19:53,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862122670] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:53,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137048369] [2021-10-07 15:19:53,988 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:19:53,988 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:19:53,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:19:53,989 INFO L229 MonitoredProcess]: Starting monitored process 151 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 15:19:53,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2021-10-07 15:19:57,625 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:19:57,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:19:57,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-07 15:19:57,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:19:57,975 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:19:57,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137048369] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:57,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:19:57,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 24 [2021-10-07 15:19:57,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378503334] [2021-10-07 15:19:57,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 15:19:57,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:19:57,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 15:19:57,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:19:57,977 INFO L87 Difference]: Start difference. First operand 323 states and 788 transitions. Second operand has 26 states, 25 states have (on average 1.6) internal successors, (40), 25 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 15:19:59,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:19:59,064 INFO L93 Difference]: Finished difference Result 571 states and 1349 transitions. [2021-10-07 15:19:59,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:19:59,064 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.6) internal successors, (40), 25 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 20 [2021-10-07 15:19:59,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:19:59,066 INFO L225 Difference]: With dead ends: 571 [2021-10-07 15:19:59,066 INFO L226 Difference]: Without dead ends: 571 [2021-10-07 15:19:59,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1179.7ms TimeCoverageRelationStatistics Valid=189, Invalid=1371, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 15:19:59,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-10-07 15:19:59,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 323. [2021-10-07 15:19:59,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 319 states have (on average 2.470219435736677) internal successors, (788), 322 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:19:59,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 788 transitions. [2021-10-07 15:19:59,071 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 788 transitions. Word has length 20 [2021-10-07 15:19:59,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:19:59,072 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 788 transitions. [2021-10-07 15:19:59,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.6) internal successors, (40), 25 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 15:19:59,072 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 788 transitions. [2021-10-07 15:19:59,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:19:59,072 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:19:59,072 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:19:59,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Forceful destruction successful, exit code 0 [2021-10-07 15:19:59,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,151 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:19:59,273 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:19:59,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:19:59,274 INFO L82 PathProgramCache]: Analyzing trace with hash 332653664, now seen corresponding path program 14 times [2021-10-07 15:19:59,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:19:59,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242538867] [2021-10-07 15:19:59,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:19:59,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:19:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:19:59,905 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:19:59,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:19:59,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242538867] [2021-10-07 15:19:59,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242538867] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:19:59,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792274486] [2021-10-07 15:19:59,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:19:59,906 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:19:59,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:19:59,907 INFO L229 MonitoredProcess]: Starting monitored process 152 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 15:19:59,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2021-10-07 15:20:03,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:20:03,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:20:03,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-07 15:20:03,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:20:03,839 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:20:03,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792274486] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:20:03,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:20:03,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 24 [2021-10-07 15:20:03,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534432039] [2021-10-07 15:20:03,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 15:20:03,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:20:03,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 15:20:03,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:20:03,841 INFO L87 Difference]: Start difference. First operand 323 states and 788 transitions. Second operand has 26 states, 25 states have (on average 1.6) internal successors, (40), 25 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 15:20:04,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:20:04,860 INFO L93 Difference]: Finished difference Result 563 states and 1335 transitions. [2021-10-07 15:20:04,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:20:04,860 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.6) internal successors, (40), 25 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 20 [2021-10-07 15:20:04,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:20:04,862 INFO L225 Difference]: With dead ends: 563 [2021-10-07 15:20:04,862 INFO L226 Difference]: Without dead ends: 555 [2021-10-07 15:20:04,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1102.4ms TimeCoverageRelationStatistics Valid=197, Invalid=1363, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 15:20:04,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-10-07 15:20:04,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 323. [2021-10-07 15:20:04,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 319 states have (on average 2.4639498432601883) internal successors, (786), 322 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:20:04,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 786 transitions. [2021-10-07 15:20:04,868 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 786 transitions. Word has length 20 [2021-10-07 15:20:04,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:20:04,868 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 786 transitions. [2021-10-07 15:20:04,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.6) internal successors, (40), 25 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 15:20:04,868 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 786 transitions. [2021-10-07 15:20:04,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:20:04,869 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:20:04,869 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:20:04,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Ended with exit code 0 [2021-10-07 15:20:05,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,152 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:20:05,072 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:20:05,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:20:05,072 INFO L82 PathProgramCache]: Analyzing trace with hash 332653657, now seen corresponding path program 23 times [2021-10-07 15:20:05,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:20:05,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885035929] [2021-10-07 15:20:05,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:20:05,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:20:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:20:06,000 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:20:06,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:20:06,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885035929] [2021-10-07 15:20:06,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885035929] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:20:06,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45447645] [2021-10-07 15:20:06,001 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:20:06,002 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:20:06,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:20:06,003 INFO L229 MonitoredProcess]: Starting monitored process 153 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 15:20:06,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2021-10-07 15:20:09,610 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:20:09,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:20:09,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-07 15:20:09,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:20:09,960 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:20:09,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45447645] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:20:09,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:20:09,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 25 [2021-10-07 15:20:09,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450542300] [2021-10-07 15:20:09,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-07 15:20:09,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:20:09,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-07 15:20:09,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:20:09,962 INFO L87 Difference]: Start difference. First operand 323 states and 786 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 15:20:12,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:20:12,840 INFO L93 Difference]: Finished difference Result 886 states and 2156 transitions. [2021-10-07 15:20:12,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-07 15:20:12,841 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 20 [2021-10-07 15:20:12,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:20:12,843 INFO L225 Difference]: With dead ends: 886 [2021-10-07 15:20:12,843 INFO L226 Difference]: Without dead ends: 886 [2021-10-07 15:20:12,844 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 2808.9ms TimeCoverageRelationStatistics Valid=388, Invalid=3272, Unknown=0, NotChecked=0, Total=3660 [2021-10-07 15:20:12,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2021-10-07 15:20:12,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 437. [2021-10-07 15:20:12,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 433 states have (on average 2.5658198614318706) internal successors, (1111), 436 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:20:12,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 1111 transitions. [2021-10-07 15:20:12,852 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 1111 transitions. Word has length 20 [2021-10-07 15:20:12,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:20:12,852 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 1111 transitions. [2021-10-07 15:20:12,852 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 15:20:12,853 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 1111 transitions. [2021-10-07 15:20:12,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:20:12,853 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:20:12,853 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:20:12,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Forceful destruction successful, exit code 0 [2021-10-07 15:20:13,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2021-10-07 15:20:13,054 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2021-10-07 15:20:13,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:20:13,055 INFO L82 PathProgramCache]: Analyzing trace with hash 332653633, now seen corresponding path program 79 times [2021-10-07 15:20:13,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:20:13,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369376143] [2021-10-07 15:20:13,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:20:13,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:20:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:20:14,854 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:20:14,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:20:14,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369376143] [2021-10-07 15:20:14,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369376143] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:20:14,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864034711] [2021-10-07 15:20:14,855 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:20:14,855 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:20:14,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:20:14,856 INFO L229 MonitoredProcess]: Starting monitored process 154 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 15:20:14,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2021-10-07 15:20:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:20:18,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-07 15:20:18,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:20:19,385 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:20:19,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864034711] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:20:19,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:20:19,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 27 [2021-10-07 15:20:19,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943861417] [2021-10-07 15:20:19,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-07 15:20:19,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:20:19,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-07 15:20:19,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:20:19,387 INFO L87 Difference]: Start difference. First operand 437 states and 1111 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) Received shutdown request... [2021-10-07 15:20:19,788 WARN L223 SmtUtils]: Removed 5 from assertion stack [2021-10-07 15:20:19,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:20:19,789 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:19,824 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 15:20:19,825 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 15:20:19,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Ended with exit code 0 [2021-10-07 15:20:19,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2021-10-07 15:20:19,990 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (437states) and FLOYD_HOARE automaton (currently 5 states, 29 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 67 for 33ms.. [2021-10-07 15:20:19,993 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:19,994 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:19,994 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:19,994 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:19,994 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:19,994 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:19,994 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:19,994 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:19,994 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:19,994 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:19,995 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:19,995 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:19,995 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 15:20:19,995 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 15:20:19,995 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:19,995 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:19,995 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:19,995 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:19,995 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:19,995 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:19,996 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:19,996 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:19,996 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:20:20,001 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 15:20:20,001 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 15:20:20,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 03:20:20 BasicIcfg [2021-10-07 15:20:20,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 15:20:20,003 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.witnessprinter [2021-10-07 15:20:20,004 INFO L168 Benchmark]: Toolchain (without parser) took 713944.99 ms. Allocated memory was 151.0 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 125.0 MB in the beginning and 339.2 MB in the end (delta: -214.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 8.0 GB. [2021-10-07 15:20:20,004 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 120.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 15:20:20,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.11 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 113.7 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-07 15:20:20,004 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.95 ms. Allocated memory is still 151.0 MB. Free memory was 113.4 MB in the beginning and 111.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:20:20,004 INFO L168 Benchmark]: Boogie Preprocessor took 42.85 ms. Allocated memory is still 151.0 MB. Free memory was 111.6 MB in the beginning and 110.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 15:20:20,005 INFO L168 Benchmark]: RCFGBuilder took 981.82 ms. Allocated memory is still 151.0 MB. Free memory was 109.9 MB in the beginning and 122.0 MB in the end (delta: -12.1 MB). Peak memory consumption was 20.9 MB. Max. memory is 8.0 GB. [2021-10-07 15:20:20,005 INFO L168 Benchmark]: TraceAbstraction took 712567.79 ms. Allocated memory was 151.0 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 121.5 MB in the beginning and 339.2 MB in the end (delta: -217.7 MB). Peak memory consumption was 1.1 GB. Max. memory is 8.0 GB. [2021-10-07 15:20:20,006 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 120.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 287.11 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 113.7 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 51.95 ms. Allocated memory is still 151.0 MB. Free memory was 113.4 MB in the beginning and 111.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.85 ms. Allocated memory is still 151.0 MB. Free memory was 111.6 MB in the beginning and 110.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 981.82 ms. Allocated memory is still 151.0 MB. Free memory was 109.9 MB in the beginning and 122.0 MB in the end (delta: -12.1 MB). Peak memory consumption was 20.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 712567.79 ms. Allocated memory was 151.0 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 121.5 MB in the beginning and 339.2 MB in the end (delta: -217.7 MB). Peak memory consumption was 1.1 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7187.2ms, 135 PlacesBefore, 35 PlacesAfterwards, 139 TransitionsBefore, 31 TransitionsAfterwards, 1142 CoEnabledTransitionPairs, 7 FixpointIterations, 81 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 19 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 151 TotalNumberOfCompositions, 1626 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1364, positive: 1337, positive conditional: 0, positive unconditional: 1337, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 668, positive: 659, positive conditional: 0, positive unconditional: 659, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 668, positive: 653, positive conditional: 0, positive unconditional: 653, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 15, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 66, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1364, positive: 678, positive conditional: 0, positive unconditional: 678, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 668, unknown conditional: 0, unknown unconditional: 668] , Statistics on independence cache: Total cache size (in pairs): 56, Positive cache size: 54, Positive conditional cache size: 0, Positive unconditional cache size: 54, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - 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: 71]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (437states) and FLOYD_HOARE automaton (currently 5 states, 29 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 67 for 33ms.. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (437states) and FLOYD_HOARE automaton (currently 5 states, 29 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 67 for 33ms.. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (437states) and FLOYD_HOARE automaton (currently 5 states, 29 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 67 for 33ms.. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (437states) and FLOYD_HOARE automaton (currently 5 states, 29 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 67 for 33ms.. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (437states) and FLOYD_HOARE automaton (currently 5 states, 29 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 67 for 33ms.. - TimeoutResultAtElement [Line: 47]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (437states) and FLOYD_HOARE automaton (currently 5 states, 29 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 67 for 33ms.. - TimeoutResultAtElement [Line: 47]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (437states) and FLOYD_HOARE automaton (currently 5 states, 29 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 67 for 33ms.. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (437states) and FLOYD_HOARE automaton (currently 5 states, 29 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 67 for 33ms.. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (437states) and FLOYD_HOARE automaton (currently 5 states, 29 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 67 for 33ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (437states) and FLOYD_HOARE automaton (currently 5 states, 29 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 67 for 33ms.. - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (437states) and FLOYD_HOARE automaton (currently 5 states, 29 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 67 for 33ms.. - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was constructing difference of abstraction (437states) and FLOYD_HOARE automaton (currently 5 states, 29 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 67 for 33ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (437states) and FLOYD_HOARE automaton (currently 5 states, 29 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 67 for 33ms.. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (437states) and FLOYD_HOARE automaton (currently 5 states, 29 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 67 for 33ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 163 locations, 24 error locations. Started 1 CEGAR loops. OverallTime: 712396.1ms, OverallIterations: 157, TraceHistogramMax: 5, EmptinessCheckTime: 108.5ms, AutomataDifference: 220109.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7291.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2707 SDtfs, 14028 SDslu, 30071 SDs, 0 SdLazy, 76774 SolverSat, 7015 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 66413.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6048 GetRequests, 846 SyntacticMatches, 1 SemanticMatches, 5200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34746 ImplicationChecksByTransitivity, 239534.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=982occurred in iteration=111, InterpolantAutomatonStates: 3155, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1182.2ms AutomataMinimizationTime, 156 MinimizatonAttempts, 18357 StatesRemovedByMinimization, 145 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1508.3ms SsaConstructionTime, 9389.7ms SatisfiabilityAnalysisTime, 211208.2ms InterpolantComputationTime, 4938 NumberOfCodeBlocks, 4916 NumberOfCodeBlocksAsserted, 491 NumberOfCheckSat, 4628 ConstructedInterpolants, 158 QuantifiedInterpolants, 144001 SizeOfPredicates, 2353 NumberOfNonLiveVariables, 31723 ConjunctsInSsa, 6855 ConjunctsInUnsatCore, 310 InterpolantComputations, 14 PerfectInterpolantSequences, 338/4499 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