/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/array-eq-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 15:44:42,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 15:44:42,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 15:44:42,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 15:44:42,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 15:44:42,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 15:44:42,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 15:44:42,434 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-08 15:44:42,495 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 15:44:42,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 15:44:42,496 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 15:44:42,497 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 15:44:42,498 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 15:44:42,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 15:44:42,503 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 15:44:42,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 15:44:42,503 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 15:44:42,504 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 15:44:42,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 15:44:42,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 15:44:42,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 15:44:42,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-08 15:44:42,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 15:44:42,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-08 15:44:42,505 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-08 15:44:42,505 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 15:44:42,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-08 15:44:42,506 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 15:44:42,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-08 15:44:42,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 15:44:42,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 15:44:42,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 15:44:42,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 15:44:42,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 15:44:42,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 15:44:42,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-08 15:44:42,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-08 15:44:42,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-08 15:44:42,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-08 15:44:42,510 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 15:44:42,510 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 15:44:42,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 15:44:42,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 15:44:42,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 15:44:42,983 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 15:44:42,984 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 15:44:42,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2021-10-08 15:44:43,068 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6cea790d/e06c5609ebd04b09a9fd53e8a3606ece/FLAG25da9a867 [2021-10-08 15:44:43,758 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 15:44:43,759 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2021-10-08 15:44:43,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6cea790d/e06c5609ebd04b09a9fd53e8a3606ece/FLAG25da9a867 [2021-10-08 15:44:44,107 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6cea790d/e06c5609ebd04b09a9fd53e8a3606ece [2021-10-08 15:44:44,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 15:44:44,119 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-08 15:44:44,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 15:44:44,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 15:44:44,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 15:44:44,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 03:44:44" (1/1) ... [2021-10-08 15:44:44,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37426944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:44:44, skipping insertion in model container [2021-10-08 15:44:44,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 03:44:44" (1/1) ... [2021-10-08 15:44:44,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 15:44:44,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 15:44:44,351 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/array-eq-trans.wvr.c[2737,2750] [2021-10-08 15:44:44,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 15:44:44,368 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 15:44:44,398 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/array-eq-trans.wvr.c[2737,2750] [2021-10-08 15:44:44,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 15:44:44,431 INFO L208 MainTranslator]: Completed translation [2021-10-08 15:44:44,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:44:44 WrapperNode [2021-10-08 15:44:44,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 15:44:44,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 15:44:44,435 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 15:44:44,435 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 15:44:44,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:44:44" (1/1) ... [2021-10-08 15:44:44,478 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:44:44" (1/1) ... [2021-10-08 15:44:44,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 15:44:44,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 15:44:44,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 15:44:44,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 15:44:44,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:44:44" (1/1) ... [2021-10-08 15:44:44,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:44:44" (1/1) ... [2021-10-08 15:44:44,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:44:44" (1/1) ... [2021-10-08 15:44:44,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:44:44" (1/1) ... [2021-10-08 15:44:44,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:44:44" (1/1) ... [2021-10-08 15:44:44,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:44:44" (1/1) ... [2021-10-08 15:44:44,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:44:44" (1/1) ... [2021-10-08 15:44:44,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 15:44:44,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 15:44:44,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 15:44:44,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 15:44:44,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:44:44" (1/1) ... [2021-10-08 15:44:44,654 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 15:44:44,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:44:44,689 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 15:44:44,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 15:44:44,766 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 15:44:44,767 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 15:44:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 15:44:44,767 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 15:44:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 15:44:44,768 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 15:44:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-08 15:44:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 15:44:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-08 15:44:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-08 15:44:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 15:44:44,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 15:44:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-08 15:44:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 15:44:44,771 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 15:44:45,494 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 15:44:45,495 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-10-08 15:44:45,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 03:44:45 BoogieIcfgContainer [2021-10-08 15:44:45,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 15:44:45,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 15:44:45,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 15:44:45,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 15:44:45,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 03:44:44" (1/3) ... [2021-10-08 15:44:45,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@146025d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 03:44:45, skipping insertion in model container [2021-10-08 15:44:45,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:44:44" (2/3) ... [2021-10-08 15:44:45,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@146025d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 03:44:45, skipping insertion in model container [2021-10-08 15:44:45,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 03:44:45" (3/3) ... [2021-10-08 15:44:45,509 INFO L111 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2021-10-08 15:44:45,516 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-08 15:44:45,516 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 15:44:45,516 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-10-08 15:44:45,517 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 15:44:45,566 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,567 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,567 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,567 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,567 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,568 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,568 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,568 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,568 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,569 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,569 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,569 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,569 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,569 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,570 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,570 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,570 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,570 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,571 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,571 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,571 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,571 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,571 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,572 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,572 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,572 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,572 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,573 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,573 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,573 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,573 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,574 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,574 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,574 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,574 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,575 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,575 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,575 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,576 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,576 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,577 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,577 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,577 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,577 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,578 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,578 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,578 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,578 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,579 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,579 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,579 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,579 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,579 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,580 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,580 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,580 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,580 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,581 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,581 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,581 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,581 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,581 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,582 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,582 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,582 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,582 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,583 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,583 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,583 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,583 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,584 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,584 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,584 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,584 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,584 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,585 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,586 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,586 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,586 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,586 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,587 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,587 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,587 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,587 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,588 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,588 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,588 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,588 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,589 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,589 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,589 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,589 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,589 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,590 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,590 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,590 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,590 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,590 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,591 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,591 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,591 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,591 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,592 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,592 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,592 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,592 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,593 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,593 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,593 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,593 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,594 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,594 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,594 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,594 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,598 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,599 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,599 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,599 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,599 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,604 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,605 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,605 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,605 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,606 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,607 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,608 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,608 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,608 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,609 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:44:45,617 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-08 15:44:45,679 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 15:44:45,688 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-08 15:44:45,688 INFO L340 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2021-10-08 15:44:45,714 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 15:44:45,729 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 281 places, 301 transitions, 626 flow [2021-10-08 15:44:45,733 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 281 places, 301 transitions, 626 flow [2021-10-08 15:44:45,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 281 places, 301 transitions, 626 flow [2021-10-08 15:44:45,878 INFO L129 PetriNetUnfolder]: 30/298 cut-off events. [2021-10-08 15:44:45,878 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-08 15:44:45,895 INFO L84 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 298 events. 30/298 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 321 event pairs, 0 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 200. Up to 3 conditions per place. [2021-10-08 15:44:45,907 INFO L116 LiptonReduction]: Number of co-enabled transitions 3840 [2021-10-08 15:45:00,541 INFO L131 LiptonReduction]: Checked pairs total: 6087 [2021-10-08 15:45:00,542 INFO L133 LiptonReduction]: Total number of compositions: 364 [2021-10-08 15:45:00,553 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 44 transitions, 112 flow [2021-10-08 15:45:00,590 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 313 states, 281 states have (on average 3.9395017793594307) internal successors, (1107), 312 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:00,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 313 states, 281 states have (on average 3.9395017793594307) internal successors, (1107), 312 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:00,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 15:45:00,603 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:45:00,604 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 15:45:00,605 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-08 15:45:00,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:45:00,612 INFO L82 PathProgramCache]: Analyzing trace with hash 37911, now seen corresponding path program 1 times [2021-10-08 15:45:00,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:45:00,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920471684] [2021-10-08 15:45:00,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:00,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:45:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:00,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:45:00,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:45:00,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920471684] [2021-10-08 15:45:00,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920471684] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:45:00,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:45:00,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 15:45:00,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477284960] [2021-10-08 15:45:00,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:45:00,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:45:00,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:45:00,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:45:00,866 INFO L87 Difference]: Start difference. First operand has 313 states, 281 states have (on average 3.9395017793594307) internal successors, (1107), 312 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:00,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:45:00,966 INFO L93 Difference]: Finished difference Result 619 states and 2207 transitions. [2021-10-08 15:45:00,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:45:00,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-08 15:45:00,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:45:00,994 INFO L225 Difference]: With dead ends: 619 [2021-10-08 15:45:00,994 INFO L226 Difference]: Without dead ends: 619 [2021-10-08 15:45:00,995 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:45:01,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-10-08 15:45:01,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 316. [2021-10-08 15:45:01,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 284 states have (on average 3.9190140845070425) internal successors, (1113), 315 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:01,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 1113 transitions. [2021-10-08 15:45:01,085 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 1113 transitions. Word has length 2 [2021-10-08 15:45:01,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:45:01,086 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 1113 transitions. [2021-10-08 15:45:01,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:01,086 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 1113 transitions. [2021-10-08 15:45:01,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 15:45:01,087 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:45:01,087 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 15:45:01,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-08 15:45:01,088 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-08 15:45:01,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:45:01,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1176386, now seen corresponding path program 1 times [2021-10-08 15:45:01,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:45:01,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229540814] [2021-10-08 15:45:01,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:01,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:45:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:01,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:45:01,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:45:01,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229540814] [2021-10-08 15:45:01,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229540814] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:45:01,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:45:01,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 15:45:01,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970270987] [2021-10-08 15:45:01,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:45:01,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:45:01,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:45:01,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:45:01,180 INFO L87 Difference]: Start difference. First operand 316 states and 1113 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:01,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:45:01,230 INFO L93 Difference]: Finished difference Result 313 states and 1110 transitions. [2021-10-08 15:45:01,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:45:01,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 15:45:01,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:45:01,234 INFO L225 Difference]: With dead ends: 313 [2021-10-08 15:45:01,235 INFO L226 Difference]: Without dead ends: 313 [2021-10-08 15:45:01,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:45:01,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-10-08 15:45:01,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2021-10-08 15:45:01,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 284 states have (on average 3.908450704225352) internal successors, (1110), 312 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:01,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 1110 transitions. [2021-10-08 15:45:01,280 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 1110 transitions. Word has length 3 [2021-10-08 15:45:01,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:45:01,286 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 1110 transitions. [2021-10-08 15:45:01,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:01,287 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 1110 transitions. [2021-10-08 15:45:01,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 15:45:01,287 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:45:01,287 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 15:45:01,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-08 15:45:01,288 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-08 15:45:01,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:45:01,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1176388, now seen corresponding path program 1 times [2021-10-08 15:45:01,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:45:01,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958694102] [2021-10-08 15:45:01,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:01,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:45:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:01,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:45:01,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:45:01,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958694102] [2021-10-08 15:45:01,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958694102] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:45:01,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736281034] [2021-10-08 15:45:01,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:01,412 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:45:01,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:45:01,415 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:45:01,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-08 15:45:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:01,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 15:45:01,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:45:01,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:45:01,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736281034] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:45:01,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:45:01,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-08 15:45:01,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659952729] [2021-10-08 15:45:01,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 15:45:01,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:45:01,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 15:45:01,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:45:01,559 INFO L87 Difference]: Start difference. First operand 313 states and 1110 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) [2021-10-08 15:45:01,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:45:01,631 INFO L93 Difference]: Finished difference Result 922 states and 3304 transitions. [2021-10-08 15:45:01,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:45:01,632 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 [2021-10-08 15:45:01,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:45:01,645 INFO L225 Difference]: With dead ends: 922 [2021-10-08 15:45:01,645 INFO L226 Difference]: Without dead ends: 922 [2021-10-08 15:45:01,646 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.3ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:45:01,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2021-10-08 15:45:01,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 316. [2021-10-08 15:45:01,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 287 states have (on average 3.8885017421602788) internal successors, (1116), 315 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:01,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 1116 transitions. [2021-10-08 15:45:01,674 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 1116 transitions. Word has length 3 [2021-10-08 15:45:01,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:45:01,675 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 1116 transitions. [2021-10-08 15:45:01,675 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) [2021-10-08 15:45:01,676 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 1116 transitions. [2021-10-08 15:45:01,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 15:45:01,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:45:01,676 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-08 15:45:01,724 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 [2021-10-08 15:45:01,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:45:01,891 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-08 15:45:01,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:45:01,892 INFO L82 PathProgramCache]: Analyzing trace with hash 36469113, now seen corresponding path program 2 times [2021-10-08 15:45:01,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:45:01,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432663468] [2021-10-08 15:45:01,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:01,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:45:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:02,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:45:02,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:45:02,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432663468] [2021-10-08 15:45:02,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432663468] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:45:02,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239362106] [2021-10-08 15:45:02,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:45:02,025 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:45:02,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:45:02,027 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:45:02,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-08 15:45:02,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 15:45:02,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:45:02,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 15:45:02,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:45:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 15:45:02,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239362106] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:45:02,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:45:02,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-08 15:45:02,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840651948] [2021-10-08 15:45:02,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:45:02,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:45:02,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:45:02,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 15:45:02,134 INFO L87 Difference]: Start difference. First operand 316 states and 1116 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:02,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:45:02,157 INFO L93 Difference]: Finished difference Result 315 states and 1115 transitions. [2021-10-08 15:45:02,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:45:02,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-08 15:45:02,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:45:02,161 INFO L225 Difference]: With dead ends: 315 [2021-10-08 15:45:02,162 INFO L226 Difference]: Without dead ends: 315 [2021-10-08 15:45:02,162 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 12.8ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 15:45:02,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-10-08 15:45:02,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 313. [2021-10-08 15:45:02,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 285 states have (on average 3.898245614035088) internal successors, (1111), 312 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) [2021-10-08 15:45:02,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 1111 transitions. [2021-10-08 15:45:02,178 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 1111 transitions. Word has length 4 [2021-10-08 15:45:02,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:45:02,178 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 1111 transitions. [2021-10-08 15:45:02,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:02,179 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 1111 transitions. [2021-10-08 15:45:02,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 15:45:02,179 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:45:02,179 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2021-10-08 15:45:02,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-08 15:45:02,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:45:02,393 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-08 15:45:02,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:45:02,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1131302187, now seen corresponding path program 1 times [2021-10-08 15:45:02,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:45:02,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912563429] [2021-10-08 15:45:02,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:02,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:45:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:02,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:45:02,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:45:02,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912563429] [2021-10-08 15:45:02,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912563429] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:45:02,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175609645] [2021-10-08 15:45:02,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:02,472 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:45:02,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:45:02,475 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:45:02,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-08 15:45:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:02,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 15:45:02,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:45:02,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:45:02,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175609645] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:45:02,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:45:02,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-08 15:45:02,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033598848] [2021-10-08 15:45:02,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 15:45:02,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:45:02,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 15:45:02,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 15:45:02,566 INFO L87 Difference]: Start difference. First operand 313 states and 1111 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:02,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:45:02,653 INFO L93 Difference]: Finished difference Result 1227 states and 4403 transitions. [2021-10-08 15:45:02,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 15:45:02,654 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 15:45:02,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:45:02,667 INFO L225 Difference]: With dead ends: 1227 [2021-10-08 15:45:02,667 INFO L226 Difference]: Without dead ends: 1227 [2021-10-08 15:45:02,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 12.0ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 15:45:02,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2021-10-08 15:45:02,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 315. [2021-10-08 15:45:02,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 287 states have (on average 3.8850174216027873) internal successors, (1115), 314 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:02,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 1115 transitions. [2021-10-08 15:45:02,692 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 1115 transitions. Word has length 5 [2021-10-08 15:45:02,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:45:02,693 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 1115 transitions. [2021-10-08 15:45:02,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:02,693 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 1115 transitions. [2021-10-08 15:45:02,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 15:45:02,694 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:45:02,694 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2021-10-08 15:45:02,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-08 15:45:02,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:45:02,908 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-08 15:45:02,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:45:02,909 INFO L82 PathProgramCache]: Analyzing trace with hash 710632868, now seen corresponding path program 2 times [2021-10-08 15:45:02,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:45:02,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202500666] [2021-10-08 15:45:02,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:02,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:45:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:03,005 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:45:03,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:45:03,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202500666] [2021-10-08 15:45:03,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202500666] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:45:03,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281971923] [2021-10-08 15:45:03,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:45:03,007 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:45:03,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:45:03,008 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:45:03,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-08 15:45:03,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 15:45:03,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:45:03,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 15:45:03,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:45:03,112 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 15:45:03,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281971923] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:45:03,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:45:03,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2021-10-08 15:45:03,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479534137] [2021-10-08 15:45:03,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:45:03,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:45:03,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:45:03,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 15:45:03,115 INFO L87 Difference]: Start difference. First operand 315 states and 1115 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:03,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:45:03,149 INFO L93 Difference]: Finished difference Result 314 states and 1114 transitions. [2021-10-08 15:45:03,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:45:03,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-08 15:45:03,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:45:03,153 INFO L225 Difference]: With dead ends: 314 [2021-10-08 15:45:03,153 INFO L226 Difference]: Without dead ends: 314 [2021-10-08 15:45:03,154 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 26.4ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-08 15:45:03,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-10-08 15:45:03,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 311. [2021-10-08 15:45:03,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 284 states have (on average 3.9014084507042255) internal successors, (1108), 310 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:03,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 1108 transitions. [2021-10-08 15:45:03,168 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 1108 transitions. Word has length 6 [2021-10-08 15:45:03,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:45:03,168 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 1108 transitions. [2021-10-08 15:45:03,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:03,168 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 1108 transitions. [2021-10-08 15:45:03,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 15:45:03,169 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:45:03,169 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2021-10-08 15:45:03,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-08 15:45:03,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:45:03,383 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-08 15:45:03,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:45:03,384 INFO L82 PathProgramCache]: Analyzing trace with hash 603855654, now seen corresponding path program 1 times [2021-10-08 15:45:03,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:45:03,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280983754] [2021-10-08 15:45:03,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:03,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:45:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:03,441 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:45:03,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:45:03,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280983754] [2021-10-08 15:45:03,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280983754] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:45:03,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620116367] [2021-10-08 15:45:03,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:03,443 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:45:03,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:45:03,444 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:45:03,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-08 15:45:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:03,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 15:45:03,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:45:03,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:45:03,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620116367] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:45:03,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:45:03,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-08 15:45:03,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037973722] [2021-10-08 15:45:03,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 15:45:03,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:45:03,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 15:45:03,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-08 15:45:03,550 INFO L87 Difference]: Start difference. First operand 311 states and 1108 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:03,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:45:03,656 INFO L93 Difference]: Finished difference Result 1532 states and 5502 transitions. [2021-10-08 15:45:03,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 15:45:03,656 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 15:45:03,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:45:03,674 INFO L225 Difference]: With dead ends: 1532 [2021-10-08 15:45:03,675 INFO L226 Difference]: Without dead ends: 1532 [2021-10-08 15:45:03,675 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 13.3ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-08 15:45:03,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2021-10-08 15:45:03,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 312. [2021-10-08 15:45:03,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 285 states have (on average 3.8947368421052633) internal successors, (1110), 311 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:03,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 1110 transitions. [2021-10-08 15:45:03,705 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 1110 transitions. Word has length 7 [2021-10-08 15:45:03,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:45:03,706 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 1110 transitions. [2021-10-08 15:45:03,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:03,706 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 1110 transitions. [2021-10-08 15:45:03,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 15:45:03,707 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:45:03,707 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:45:03,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-08 15:45:03,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:45:03,921 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-08 15:45:03,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:45:03,922 INFO L82 PathProgramCache]: Analyzing trace with hash 603067473, now seen corresponding path program 1 times [2021-10-08 15:45:03,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:45:03,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654889354] [2021-10-08 15:45:03,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:03,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:45:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:03,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:45:03,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:45:03,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654889354] [2021-10-08 15:45:03,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654889354] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:45:03,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:45:03,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 15:45:03,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720594226] [2021-10-08 15:45:03,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:45:03,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:45:03,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:45:03,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:45:03,958 INFO L87 Difference]: Start difference. First operand 312 states and 1110 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) [2021-10-08 15:45:03,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:45:03,975 INFO L93 Difference]: Finished difference Result 510 states and 1835 transitions. [2021-10-08 15:45:03,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:45:03,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 15:45:03,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:45:03,982 INFO L225 Difference]: With dead ends: 510 [2021-10-08 15:45:03,982 INFO L226 Difference]: Without dead ends: 510 [2021-10-08 15:45:03,982 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:45:03,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-10-08 15:45:03,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 416. [2021-10-08 15:45:03,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 389 states have (on average 4.056555269922879) internal successors, (1578), 415 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:04,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 1578 transitions. [2021-10-08 15:45:04,002 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 1578 transitions. Word has length 7 [2021-10-08 15:45:04,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:45:04,002 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 1578 transitions. [2021-10-08 15:45:04,003 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) [2021-10-08 15:45:04,003 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 1578 transitions. [2021-10-08 15:45:04,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 15:45:04,003 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:45:04,003 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2021-10-08 15:45:04,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-08 15:45:04,004 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-08 15:45:04,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:45:04,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1539658393, now seen corresponding path program 2 times [2021-10-08 15:45:04,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:45:04,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486054154] [2021-10-08 15:45:04,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:04,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:45:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:04,060 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:45:04,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:45:04,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486054154] [2021-10-08 15:45:04,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486054154] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:45:04,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578037185] [2021-10-08 15:45:04,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:45:04,062 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:45:04,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:45:04,063 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:45:04,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-08 15:45:04,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 15:45:04,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:45:04,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 15:45:04,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:45:04,186 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-08 15:45:04,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578037185] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:45:04,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:45:04,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2021-10-08 15:45:04,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598318225] [2021-10-08 15:45:04,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:45:04,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:45:04,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:45:04,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-08 15:45:04,189 INFO L87 Difference]: Start difference. First operand 416 states and 1578 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:04,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:45:04,222 INFO L93 Difference]: Finished difference Result 333 states and 1252 transitions. [2021-10-08 15:45:04,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:45:04,223 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 8 [2021-10-08 15:45:04,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:45:04,227 INFO L225 Difference]: With dead ends: 333 [2021-10-08 15:45:04,227 INFO L226 Difference]: Without dead ends: 333 [2021-10-08 15:45:04,228 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 27.9ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-08 15:45:04,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-10-08 15:45:04,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 329. [2021-10-08 15:45:04,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 312 states have (on average 3.9871794871794872) internal successors, (1244), 328 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:04,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 1244 transitions. [2021-10-08 15:45:04,244 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 1244 transitions. Word has length 8 [2021-10-08 15:45:04,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:45:04,245 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 1244 transitions. [2021-10-08 15:45:04,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:04,245 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 1244 transitions. [2021-10-08 15:45:04,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 15:45:04,246 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:45:04,246 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:45:04,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-08 15:45:04,460 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 [2021-10-08 15:45:04,460 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-08 15:45:04,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:45:04,461 INFO L82 PathProgramCache]: Analyzing trace with hash -272670833, now seen corresponding path program 1 times [2021-10-08 15:45:04,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:45:04,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452559234] [2021-10-08 15:45:04,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:04,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:45:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:04,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 15:45:04,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:45:04,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452559234] [2021-10-08 15:45:04,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452559234] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:45:04,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:45:04,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 15:45:04,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645638558] [2021-10-08 15:45:04,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:45:04,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:45:04,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:45:04,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:45:04,520 INFO L87 Difference]: Start difference. First operand 329 states and 1244 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:04,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:45:04,567 INFO L93 Difference]: Finished difference Result 447 states and 1590 transitions. [2021-10-08 15:45:04,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:45:04,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-08 15:45:04,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:45:04,572 INFO L225 Difference]: With dead ends: 447 [2021-10-08 15:45:04,573 INFO L226 Difference]: Without dead ends: 445 [2021-10-08 15:45:04,573 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:45:04,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2021-10-08 15:45:04,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 373. [2021-10-08 15:45:04,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 356 states have (on average 3.901685393258427) internal successors, (1389), 372 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:04,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1389 transitions. [2021-10-08 15:45:04,590 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1389 transitions. Word has length 9 [2021-10-08 15:45:04,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:45:04,591 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 1389 transitions. [2021-10-08 15:45:04,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:04,591 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1389 transitions. [2021-10-08 15:45:04,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 15:45:04,592 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:45:04,592 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:45:04,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-08 15:45:04,592 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-08 15:45:04,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:45:04,593 INFO L82 PathProgramCache]: Analyzing trace with hash -266420839, now seen corresponding path program 1 times [2021-10-08 15:45:04,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:45:04,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839414634] [2021-10-08 15:45:04,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:04,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:45:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:04,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:45:04,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:45:04,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839414634] [2021-10-08 15:45:04,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839414634] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:45:04,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:45:04,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 15:45:04,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764053351] [2021-10-08 15:45:04,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:45:04,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:45:04,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:45:04,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:45:04,624 INFO L87 Difference]: Start difference. First operand 373 states and 1389 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:04,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:45:04,634 INFO L93 Difference]: Finished difference Result 303 states and 1131 transitions. [2021-10-08 15:45:04,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:45:04,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-08 15:45:04,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:45:04,638 INFO L225 Difference]: With dead ends: 303 [2021-10-08 15:45:04,638 INFO L226 Difference]: Without dead ends: 303 [2021-10-08 15:45:04,638 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:45:04,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-10-08 15:45:04,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2021-10-08 15:45:04,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 292 states have (on average 3.8732876712328768) internal successors, (1131), 302 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:04,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 1131 transitions. [2021-10-08 15:45:04,652 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 1131 transitions. Word has length 9 [2021-10-08 15:45:04,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:45:04,653 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 1131 transitions. [2021-10-08 15:45:04,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:04,654 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 1131 transitions. [2021-10-08 15:45:04,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 15:45:04,654 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:45:04,655 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:45:04,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-08 15:45:04,655 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-08 15:45:04,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:45:04,655 INFO L82 PathProgramCache]: Analyzing trace with hash -266420915, now seen corresponding path program 1 times [2021-10-08 15:45:04,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:45:04,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068017937] [2021-10-08 15:45:04,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:04,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:45:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:04,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:45:04,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:45:04,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068017937] [2021-10-08 15:45:04,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068017937] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:45:04,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:45:04,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 15:45:04,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109108818] [2021-10-08 15:45:04,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:45:04,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:45:04,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:45:04,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:45:04,685 INFO L87 Difference]: Start difference. First operand 303 states and 1131 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:04,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:45:04,700 INFO L93 Difference]: Finished difference Result 511 states and 1951 transitions. [2021-10-08 15:45:04,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:45:04,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-08 15:45:04,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:45:04,706 INFO L225 Difference]: With dead ends: 511 [2021-10-08 15:45:04,706 INFO L226 Difference]: Without dead ends: 511 [2021-10-08 15:45:04,707 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:45:04,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-10-08 15:45:04,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 443. [2021-10-08 15:45:04,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 432 states have (on average 4.108796296296297) internal successors, (1775), 442 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:04,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 1775 transitions. [2021-10-08 15:45:04,727 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 1775 transitions. Word has length 9 [2021-10-08 15:45:04,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:45:04,727 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 1775 transitions. [2021-10-08 15:45:04,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:04,728 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 1775 transitions. [2021-10-08 15:45:04,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 15:45:04,728 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:45:04,729 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:45:04,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-08 15:45:04,729 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-08 15:45:04,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:45:04,730 INFO L82 PathProgramCache]: Analyzing trace with hash 331105427, now seen corresponding path program 1 times [2021-10-08 15:45:04,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:45:04,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791395470] [2021-10-08 15:45:04,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:04,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:45:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:04,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:45:04,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:45:04,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791395470] [2021-10-08 15:45:04,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791395470] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:45:04,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:45:04,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 15:45:04,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654134694] [2021-10-08 15:45:04,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:45:04,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:45:04,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:45:04,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:45:04,780 INFO L87 Difference]: Start difference. First operand 443 states and 1775 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:04,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:45:04,799 INFO L93 Difference]: Finished difference Result 655 states and 2659 transitions. [2021-10-08 15:45:04,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:45:04,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-08 15:45:04,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:45:04,808 INFO L225 Difference]: With dead ends: 655 [2021-10-08 15:45:04,808 INFO L226 Difference]: Without dead ends: 655 [2021-10-08 15:45:04,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:45:04,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2021-10-08 15:45:04,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 553. [2021-10-08 15:45:04,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 542 states have (on average 4.322878228782288) internal successors, (2343), 552 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:04,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 2343 transitions. [2021-10-08 15:45:04,841 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 2343 transitions. Word has length 10 [2021-10-08 15:45:04,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:45:04,841 INFO L470 AbstractCegarLoop]: Abstraction has 553 states and 2343 transitions. [2021-10-08 15:45:04,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:04,842 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 2343 transitions. [2021-10-08 15:45:04,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 15:45:04,843 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:45:04,843 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:45:04,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-08 15:45:04,843 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-08 15:45:04,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:45:04,844 INFO L82 PathProgramCache]: Analyzing trace with hash -318264828, now seen corresponding path program 1 times [2021-10-08 15:45:04,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:45:04,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478460279] [2021-10-08 15:45:04,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:04,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:45:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:04,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 15:45:04,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:45:04,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478460279] [2021-10-08 15:45:04,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478460279] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:45:04,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:45:04,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-08 15:45:04,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052436804] [2021-10-08 15:45:04,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 15:45:04,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:45:04,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 15:45:04,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:45:04,903 INFO L87 Difference]: Start difference. First operand 553 states and 2343 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:04,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:45:04,980 INFO L93 Difference]: Finished difference Result 1143 states and 4384 transitions. [2021-10-08 15:45:04,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 15:45:04,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-08 15:45:04,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:45:05,000 INFO L225 Difference]: With dead ends: 1143 [2021-10-08 15:45:05,000 INFO L226 Difference]: Without dead ends: 1139 [2021-10-08 15:45:05,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.7ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-08 15:45:05,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-10-08 15:45:05,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 554. [2021-10-08 15:45:05,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 543 states have (on average 4.318600368324125) internal successors, (2345), 553 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:05,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 2345 transitions. [2021-10-08 15:45:05,037 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 2345 transitions. Word has length 10 [2021-10-08 15:45:05,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:45:05,038 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 2345 transitions. [2021-10-08 15:45:05,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:05,038 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 2345 transitions. [2021-10-08 15:45:05,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 15:45:05,039 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:45:05,039 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:45:05,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-08 15:45:05,039 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-08 15:45:05,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:45:05,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1674336434, now seen corresponding path program 1 times [2021-10-08 15:45:05,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:45:05,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779372342] [2021-10-08 15:45:05,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:05,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:45:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:05,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:45:05,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:45:05,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779372342] [2021-10-08 15:45:05,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779372342] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:45:05,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:45:05,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 15:45:05,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782747959] [2021-10-08 15:45:05,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:45:05,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:45:05,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:45:05,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:45:05,070 INFO L87 Difference]: Start difference. First operand 554 states and 2345 transitions. Second operand has 3 states, 2 states have (on average 5.5) 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) [2021-10-08 15:45:05,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:45:05,082 INFO L93 Difference]: Finished difference Result 444 states and 1879 transitions. [2021-10-08 15:45:05,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:45:05,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) 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 11 [2021-10-08 15:45:05,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:45:05,088 INFO L225 Difference]: With dead ends: 444 [2021-10-08 15:45:05,088 INFO L226 Difference]: Without dead ends: 424 [2021-10-08 15:45:05,088 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:45:05,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-10-08 15:45:05,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 322. [2021-10-08 15:45:05,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 317 states have (on average 3.889589905362776) internal successors, (1233), 321 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:05,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 1233 transitions. [2021-10-08 15:45:05,114 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 1233 transitions. Word has length 11 [2021-10-08 15:45:05,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:45:05,114 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 1233 transitions. [2021-10-08 15:45:05,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) 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) [2021-10-08 15:45:05,114 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 1233 transitions. [2021-10-08 15:45:05,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 15:45:05,115 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:45:05,115 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:45:05,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-08 15:45:05,116 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-08 15:45:05,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:45:05,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1667638462, now seen corresponding path program 1 times [2021-10-08 15:45:05,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:45:05,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977728663] [2021-10-08 15:45:05,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:05,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:45:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:05,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 15:45:05,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:45:05,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977728663] [2021-10-08 15:45:05,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977728663] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:45:05,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:45:05,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-08 15:45:05,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041706708] [2021-10-08 15:45:05,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 15:45:05,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:45:05,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 15:45:05,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:45:05,160 INFO L87 Difference]: Start difference. First operand 322 states and 1233 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:05,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:45:05,224 INFO L93 Difference]: Finished difference Result 367 states and 1313 transitions. [2021-10-08 15:45:05,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 15:45:05,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-08 15:45:05,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:45:05,228 INFO L225 Difference]: With dead ends: 367 [2021-10-08 15:45:05,228 INFO L226 Difference]: Without dead ends: 323 [2021-10-08 15:45:05,228 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 27.5ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-08 15:45:05,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-08 15:45:05,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-10-08 15:45:05,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 318 states have (on average 3.8773584905660377) internal successors, (1233), 322 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:05,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 1233 transitions. [2021-10-08 15:45:05,243 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 1233 transitions. Word has length 11 [2021-10-08 15:45:05,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:45:05,243 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 1233 transitions. [2021-10-08 15:45:05,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:05,243 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 1233 transitions. [2021-10-08 15:45:05,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 15:45:05,244 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:45:05,244 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:45:05,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-08 15:45:05,245 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-08 15:45:05,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:45:05,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1664444493, now seen corresponding path program 1 times [2021-10-08 15:45:05,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:45:05,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024162385] [2021-10-08 15:45:05,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:05,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:45:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:05,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 15:45:05,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:45:05,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024162385] [2021-10-08 15:45:05,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024162385] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:45:05,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218360275] [2021-10-08 15:45:05,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:05,282 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:45:05,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:45:05,285 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:45:05,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-08 15:45:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:05,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 15:45:05,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:45:05,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 15:45:05,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218360275] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:45:05,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:45:05,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 5] total 7 [2021-10-08 15:45:05,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100258756] [2021-10-08 15:45:05,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 15:45:05,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:45:05,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 15:45:05,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-08 15:45:05,466 INFO L87 Difference]: Start difference. First operand 323 states and 1233 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 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) [2021-10-08 15:45:05,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:45:05,600 INFO L93 Difference]: Finished difference Result 561 states and 1981 transitions. [2021-10-08 15:45:05,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 15:45:05,601 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 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 [2021-10-08 15:45:05,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:45:05,607 INFO L225 Difference]: With dead ends: 561 [2021-10-08 15:45:05,607 INFO L226 Difference]: Without dead ends: 543 [2021-10-08 15:45:05,607 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 86.8ms TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:45:05,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-10-08 15:45:05,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 354. [2021-10-08 15:45:05,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 351 states have (on average 3.905982905982906) internal successors, (1371), 353 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:05,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 1371 transitions. [2021-10-08 15:45:05,626 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 1371 transitions. Word has length 11 [2021-10-08 15:45:05,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:45:05,626 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 1371 transitions. [2021-10-08 15:45:05,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 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) [2021-10-08 15:45:05,627 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 1371 transitions. [2021-10-08 15:45:05,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 15:45:05,627 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:45:05,627 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:45:05,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-08 15:45:05,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-08 15:45:05,841 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-08 15:45:05,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:45:05,842 INFO L82 PathProgramCache]: Analyzing trace with hash 989019767, now seen corresponding path program 1 times [2021-10-08 15:45:05,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:45:05,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143644268] [2021-10-08 15:45:05,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:05,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:45:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:05,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 15:45:05,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:45:05,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143644268] [2021-10-08 15:45:05,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143644268] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:45:05,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:45:05,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-08 15:45:05,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257092717] [2021-10-08 15:45:05,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 15:45:05,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:45:05,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 15:45:05,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:45:05,889 INFO L87 Difference]: Start difference. First operand 354 states and 1371 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:05,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:45:05,947 INFO L93 Difference]: Finished difference Result 466 states and 1690 transitions. [2021-10-08 15:45:05,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 15:45:05,948 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-08 15:45:05,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:45:05,953 INFO L225 Difference]: With dead ends: 466 [2021-10-08 15:45:05,953 INFO L226 Difference]: Without dead ends: 428 [2021-10-08 15:45:05,953 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-08 15:45:05,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-10-08 15:45:05,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 398. [2021-10-08 15:45:05,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 395 states have (on average 3.787341772151899) internal successors, (1496), 397 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:05,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1496 transitions. [2021-10-08 15:45:05,971 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1496 transitions. Word has length 12 [2021-10-08 15:45:05,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:45:05,971 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 1496 transitions. [2021-10-08 15:45:05,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:05,971 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1496 transitions. [2021-10-08 15:45:05,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 15:45:05,972 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:45:05,972 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:45:05,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-08 15:45:05,973 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-08 15:45:05,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:45:05,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1764366569, now seen corresponding path program 1 times [2021-10-08 15:45:05,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:45:05,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494285389] [2021-10-08 15:45:05,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:05,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:45:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:06,037 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 15:45:06,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:45:06,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494285389] [2021-10-08 15:45:06,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494285389] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:45:06,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229548134] [2021-10-08 15:45:06,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:06,039 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:45:06,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:45:06,040 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:45:06,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-08 15:45:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:06,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 15:45:06,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:45:06,237 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 15:45:06,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229548134] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:45:06,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:45:06,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 6] total 8 [2021-10-08 15:45:06,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184877827] [2021-10-08 15:45:06,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 15:45:06,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:45:06,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 15:45:06,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-08 15:45:06,239 INFO L87 Difference]: Start difference. First operand 398 states and 1496 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 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) [2021-10-08 15:45:06,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:45:06,368 INFO L93 Difference]: Finished difference Result 1009 states and 3572 transitions. [2021-10-08 15:45:06,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 15:45:06,369 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 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 12 [2021-10-08 15:45:06,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:45:06,379 INFO L225 Difference]: With dead ends: 1009 [2021-10-08 15:45:06,379 INFO L226 Difference]: Without dead ends: 966 [2021-10-08 15:45:06,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 77.1ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-10-08 15:45:06,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2021-10-08 15:45:06,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 491. [2021-10-08 15:45:06,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 488 states have (on average 3.8811475409836067) internal successors, (1894), 490 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:06,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 1894 transitions. [2021-10-08 15:45:06,408 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 1894 transitions. Word has length 12 [2021-10-08 15:45:06,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:45:06,409 INFO L470 AbstractCegarLoop]: Abstraction has 491 states and 1894 transitions. [2021-10-08 15:45:06,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 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) [2021-10-08 15:45:06,409 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 1894 transitions. [2021-10-08 15:45:06,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 15:45:06,410 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:45:06,410 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:45:06,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-08 15:45:06,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:45:06,624 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-08 15:45:06,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:45:06,625 INFO L82 PathProgramCache]: Analyzing trace with hash -2027649000, now seen corresponding path program 1 times [2021-10-08 15:45:06,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:45:06,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187996085] [2021-10-08 15:45:06,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:06,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:45:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:06,788 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 15:45:06,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:45:06,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187996085] [2021-10-08 15:45:06,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187996085] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:45:06,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616350433] [2021-10-08 15:45:06,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:06,789 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:45:06,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:45:06,797 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:45:06,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-08 15:45:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:06,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 15:45:06,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:45:07,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 15:45:07,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616350433] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:45:07,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:45:07,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-08 15:45:07,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877534479] [2021-10-08 15:45:07,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 15:45:07,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:45:07,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 15:45:07,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-08 15:45:07,053 INFO L87 Difference]: Start difference. First operand 491 states and 1894 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:07,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:45:07,318 INFO L93 Difference]: Finished difference Result 1051 states and 3719 transitions. [2021-10-08 15:45:07,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 15:45:07,318 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 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 13 [2021-10-08 15:45:07,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:45:07,331 INFO L225 Difference]: With dead ends: 1051 [2021-10-08 15:45:07,331 INFO L226 Difference]: Without dead ends: 763 [2021-10-08 15:45:07,332 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 161.2ms TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-10-08 15:45:07,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2021-10-08 15:45:07,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 595. [2021-10-08 15:45:07,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 592 states have (on average 3.8716216216216215) internal successors, (2292), 594 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:07,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 2292 transitions. [2021-10-08 15:45:07,361 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 2292 transitions. Word has length 13 [2021-10-08 15:45:07,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:45:07,361 INFO L470 AbstractCegarLoop]: Abstraction has 595 states and 2292 transitions. [2021-10-08 15:45:07,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:07,362 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 2292 transitions. [2021-10-08 15:45:07,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 15:45:07,362 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:45:07,363 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:45:07,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-08 15:45:07,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:45:07,577 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-08 15:45:07,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:45:07,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1373580738, now seen corresponding path program 2 times [2021-10-08 15:45:07,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:45:07,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924376606] [2021-10-08 15:45:07,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:07,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:45:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:07,615 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 15:45:07,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:45:07,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924376606] [2021-10-08 15:45:07,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924376606] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:45:07,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416083661] [2021-10-08 15:45:07,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:45:07,616 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:45:07,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:45:07,617 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:45:07,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-08 15:45:07,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 15:45:07,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:45:07,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 15:45:07,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:45:07,753 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-08 15:45:07,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416083661] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:45:07,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:45:07,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2021-10-08 15:45:07,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723705507] [2021-10-08 15:45:07,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 15:45:07,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:45:07,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 15:45:07,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 15:45:07,757 INFO L87 Difference]: Start difference. First operand 595 states and 2292 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 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) [2021-10-08 15:45:07,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:45:07,815 INFO L93 Difference]: Finished difference Result 903 states and 3400 transitions. [2021-10-08 15:45:07,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 15:45:07,815 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 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 15 [2021-10-08 15:45:07,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:45:07,833 INFO L225 Difference]: With dead ends: 903 [2021-10-08 15:45:07,833 INFO L226 Difference]: Without dead ends: 685 [2021-10-08 15:45:07,833 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 22.3ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-08 15:45:07,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2021-10-08 15:45:07,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 307. [2021-10-08 15:45:07,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 3.4901960784313726) internal successors, (1068), 306 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:07,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 1068 transitions. [2021-10-08 15:45:07,851 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 1068 transitions. Word has length 15 [2021-10-08 15:45:07,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:45:07,852 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 1068 transitions. [2021-10-08 15:45:07,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 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) [2021-10-08 15:45:07,854 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 1068 transitions. [2021-10-08 15:45:07,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 15:45:07,854 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:45:07,855 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-08 15:45:07,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-08 15:45:08,068 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,SelfDestructingSolverStorable20 [2021-10-08 15:45:08,069 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2021-10-08 15:45:08,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:45:08,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1066076430, now seen corresponding path program 2 times [2021-10-08 15:45:08,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:45:08,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148709396] [2021-10-08 15:45:08,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:45:08,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:45:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:45:08,151 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 15:45:08,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:45:08,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148709396] [2021-10-08 15:45:08,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148709396] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:45:08,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34173089] [2021-10-08 15:45:08,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:45:08,153 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:45:08,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:45:08,158 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:45:08,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-08 15:45:08,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 15:45:08,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:45:08,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 15:45:08,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:45:08,337 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-08 15:45:08,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34173089] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:45:08,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:45:08,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 2] total 10 [2021-10-08 15:45:08,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927837801] [2021-10-08 15:45:08,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 15:45:08,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:45:08,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 15:45:08,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-08 15:45:08,339 INFO L87 Difference]: Start difference. First operand 307 states and 1068 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:08,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:45:08,493 INFO L93 Difference]: Finished difference Result 482 states and 1637 transitions. [2021-10-08 15:45:08,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 15:45:08,493 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 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 15 [2021-10-08 15:45:08,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:45:08,494 INFO L225 Difference]: With dead ends: 482 [2021-10-08 15:45:08,494 INFO L226 Difference]: Without dead ends: 0 [2021-10-08 15:45:08,494 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 98.3ms TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-08 15:45:08,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-08 15:45:08,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-08 15:45:08,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:08,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-08 15:45:08,495 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-08 15:45:08,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:45:08,495 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-08 15:45:08,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:45:08,496 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-08 15:45:08,496 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-08 15:45:08,498 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:45:08,499 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:45:08,499 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:45:08,499 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:45:08,500 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:45:08,500 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:45:08,500 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:45:08,500 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:45:08,500 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:45:08,501 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:45:08,501 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:45:08,501 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:45:08,501 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 15:45:08,501 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 15:45:08,501 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-08 15:45:08,502 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:45:08,502 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:45:08,502 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:45:08,502 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:45:08,502 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:45:08,503 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 15:45:08,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-08 15:45:08,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:45:08,711 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 15:45:08,711 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 15:45:08,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 03:45:08 BasicIcfg [2021-10-08 15:45:08,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 15:45:08,714 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-08 15:45:08,714 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-08 15:45:08,714 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-08 15:45:08,715 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 03:44:45" (3/4) ... [2021-10-08 15:45:08,718 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-08 15:45:08,725 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-08 15:45:08,725 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-08 15:45:08,725 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-08 15:45:08,733 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2021-10-08 15:45:08,734 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-08 15:45:08,734 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-08 15:45:08,735 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-08 15:45:08,793 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/weaver/array-eq-trans.wvr.c-witness.graphml [2021-10-08 15:45:08,793 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-08 15:45:08,795 INFO L168 Benchmark]: Toolchain (without parser) took 24682.77 ms. Allocated memory was 151.0 MB in the beginning and 241.2 MB in the end (delta: 90.2 MB). Free memory was 126.3 MB in the beginning and 185.0 MB in the end (delta: -58.7 MB). Peak memory consumption was 32.1 MB. Max. memory is 8.0 GB. [2021-10-08 15:45:08,795 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 15:45:08,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.82 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 114.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-08 15:45:08,796 INFO L168 Benchmark]: Boogie Procedure Inliner took 123.80 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 112.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 15:45:08,797 INFO L168 Benchmark]: Boogie Preprocessor took 78.67 ms. Allocated memory is still 151.0 MB. Free memory was 112.5 MB in the beginning and 110.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 15:45:08,797 INFO L168 Benchmark]: RCFGBuilder took 858.55 ms. Allocated memory is still 151.0 MB. Free memory was 110.6 MB in the beginning and 123.2 MB in the end (delta: -12.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-10-08 15:45:08,797 INFO L168 Benchmark]: TraceAbstraction took 23212.92 ms. Allocated memory was 151.0 MB in the beginning and 241.2 MB in the end (delta: 90.2 MB). Free memory was 122.7 MB in the beginning and 190.5 MB in the end (delta: -67.8 MB). Peak memory consumption was 23.7 MB. Max. memory is 8.0 GB. [2021-10-08 15:45:08,798 INFO L168 Benchmark]: Witness Printer took 79.23 ms. Allocated memory is still 241.2 MB. Free memory was 190.5 MB in the beginning and 185.0 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2021-10-08 15:45:08,800 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 310.82 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 114.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 123.80 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 112.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 78.67 ms. Allocated memory is still 151.0 MB. Free memory was 112.5 MB in the beginning and 110.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 858.55 ms. Allocated memory is still 151.0 MB. Free memory was 110.6 MB in the beginning and 123.2 MB in the end (delta: -12.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 23212.92 ms. Allocated memory was 151.0 MB in the beginning and 241.2 MB in the end (delta: 90.2 MB). Free memory was 122.7 MB in the beginning and 190.5 MB in the end (delta: -67.8 MB). Peak memory consumption was 23.7 MB. Max. memory is 8.0 GB. * Witness Printer took 79.23 ms. Allocated memory is still 241.2 MB. Free memory was 190.5 MB in the beginning and 185.0 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14809.1ms, 281 PlacesBefore, 46 PlacesAfterwards, 301 TransitionsBefore, 44 TransitionsAfterwards, 3840 CoEnabledTransitionPairs, 7 FixpointIterations, 198 TrivialSequentialCompositions, 69 ConcurrentSequentialCompositions, 63 TrivialYvCompositions, 12 ConcurrentYvCompositions, 22 ChoiceCompositions, 364 TotalNumberOfCompositions, 6087 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4284, positive: 4157, positive conditional: 0, positive unconditional: 4157, negative: 127, negative conditional: 0, negative unconditional: 127, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2794, positive: 2761, positive conditional: 0, positive unconditional: 2761, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2794, positive: 2761, positive conditional: 0, positive unconditional: 2761, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 33, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 70, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 70, negative conditional: 0, negative unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4284, positive: 1396, positive conditional: 0, positive unconditional: 1396, negative: 94, negative conditional: 0, negative unconditional: 94, unknown: 2794, unknown conditional: 0, unknown unconditional: 2794] , Statistics on independence cache: Total cache size (in pairs): 144, Positive cache size: 133, Positive conditional cache size: 0, Positive unconditional cache size: 133, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 329 locations, 21 error locations. Started 1 CEGAR loops. OverallTime: 23032.0ms, OverallIterations: 22, TraceHistogramMax: 4, EmptinessCheckTime: 25.8ms, AutomataDifference: 1837.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14902.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 582 SDtfs, 1719 SDslu, 1084 SDs, 0 SdLazy, 733 SolverSat, 150 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 737.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 197 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 641.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=595occurred in iteration=20, InterpolantAutomatonStates: 120, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 534.3ms AutomataMinimizationTime, 22 MinimizatonAttempts, 5313 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 158.1ms SsaConstructionTime, 636.9ms SatisfiabilityAnalysisTime, 1582.8ms InterpolantComputationTime, 291 NumberOfCodeBlocks, 268 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 258 ConstructedInterpolants, 0 QuantifiedInterpolants, 946 SizeOfPredicates, 17 NumberOfNonLiveVariables, 1602 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 33 InterpolantComputations, 14 PerfectInterpolantSequences, 80/138 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-08 15:45:08,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...