/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 14:57:41,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 14:57:41,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 14:57:41,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 14:57:41,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 14:57:41,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 14:57:41,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 14:57:41,766 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-07 14:57:41,817 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 14:57:41,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 14:57:41,818 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 14:57:41,818 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 14:57:41,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 14:57:41,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 14:57:41,824 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 14:57:41,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 14:57:41,824 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 14:57:41,825 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 14:57:41,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 14:57:41,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 14:57:41,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 14:57:41,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-07 14:57:41,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 14:57:41,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-07 14:57:41,828 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-07 14:57:41,828 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 14:57:41,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-07 14:57:41,828 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 14:57:41,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-07 14:57:41,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 14:57:41,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 14:57:41,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 14:57:41,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 14:57:41,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 14:57:41,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 14:57:41,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-07 14:57:41,830 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-07 14:57:41,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-07 14:57:41,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-07 14:57:41,831 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 14:57:41,832 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 14:57:42,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 14:57:42,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 14:57:42,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 14:57:42,433 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 14:57:42,434 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 14:57:42,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2021-10-07 14:57:42,533 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dc95c5ae/6e0006a6b6a14611be27ece0685cbcc3/FLAG5083e0d08 [2021-10-07 14:57:43,233 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 14:57:43,234 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2021-10-07 14:57:43,247 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dc95c5ae/6e0006a6b6a14611be27ece0685cbcc3/FLAG5083e0d08 [2021-10-07 14:57:43,279 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dc95c5ae/6e0006a6b6a14611be27ece0685cbcc3 [2021-10-07 14:57:43,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 14:57:43,296 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-07 14:57:43,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 14:57:43,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 14:57:43,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 14:57:43,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:57:43" (1/1) ... [2021-10-07 14:57:43,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be4978e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:57:43, skipping insertion in model container [2021-10-07 14:57:43,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:57:43" (1/1) ... [2021-10-07 14:57:43,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 14:57:43,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 14:57:43,670 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2079,2092] [2021-10-07 14:57:43,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 14:57:43,717 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 14:57:43,761 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2079,2092] [2021-10-07 14:57:43,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 14:57:43,799 INFO L208 MainTranslator]: Completed translation [2021-10-07 14:57:43,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:57:43 WrapperNode [2021-10-07 14:57:43,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 14:57:43,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 14:57:43,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 14:57:43,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 14:57:43,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:57:43" (1/1) ... [2021-10-07 14:57:43,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:57:43" (1/1) ... [2021-10-07 14:57:43,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 14:57:43,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 14:57:43,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 14:57:43,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 14:57:43,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:57:43" (1/1) ... [2021-10-07 14:57:43,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:57:43" (1/1) ... [2021-10-07 14:57:43,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:57:43" (1/1) ... [2021-10-07 14:57:43,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:57:43" (1/1) ... [2021-10-07 14:57:43,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:57:43" (1/1) ... [2021-10-07 14:57:43,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:57:43" (1/1) ... [2021-10-07 14:57:43,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:57:43" (1/1) ... [2021-10-07 14:57:43,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 14:57:43,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 14:57:43,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 14:57:43,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 14:57:43,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:57:43" (1/1) ... [2021-10-07 14:57:43,971 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 14:57:43,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:57:44,008 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 14:57:44,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 14:57:44,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 14:57:44,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 14:57:44,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 14:57:44,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 14:57:44,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-07 14:57:44,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 14:57:44,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-07 14:57:44,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-07 14:57:44,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 14:57:44,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 14:57:44,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-07 14:57:44,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 14:57:44,090 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 14:57:44,585 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 14:57:44,585 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-07 14:57:44,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:57:44 BoogieIcfgContainer [2021-10-07 14:57:44,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 14:57:44,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 14:57:44,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 14:57:44,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 14:57:44,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:57:43" (1/3) ... [2021-10-07 14:57:44,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26c1059d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:57:44, skipping insertion in model container [2021-10-07 14:57:44,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:57:43" (2/3) ... [2021-10-07 14:57:44,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26c1059d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:57:44, skipping insertion in model container [2021-10-07 14:57:44,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:57:44" (3/3) ... [2021-10-07 14:57:44,611 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2021-10-07 14:57:44,625 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-07 14:57:44,625 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 14:57:44,625 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-07 14:57:44,626 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 14:57:44,690 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,691 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,691 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,691 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,692 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,692 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,692 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,693 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,693 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,693 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,693 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,694 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,694 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,694 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,694 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,695 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,695 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,695 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,696 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,696 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,696 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,696 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,696 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,697 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,697 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,697 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,698 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,698 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,698 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,698 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,698 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,699 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,699 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,699 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,699 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,700 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,700 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,700 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,701 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,701 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,701 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,701 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,701 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,702 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,702 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,703 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,703 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,703 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,703 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,704 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,704 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,704 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,704 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,704 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,705 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,705 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,705 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,705 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,706 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,706 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,706 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,706 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,707 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,707 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,707 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,707 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,708 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,708 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,708 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,708 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,708 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,709 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,709 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,709 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,709 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,709 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,710 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,710 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,710 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,710 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,710 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,711 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,711 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,711 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,711 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,711 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,712 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,712 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,715 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,716 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,716 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,716 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,717 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,722 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,722 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,722 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,723 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,723 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:57:44,731 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-07 14:57:44,783 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 14:57:44,791 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 14:57:44,792 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-10-07 14:57:44,828 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 14:57:44,844 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 128 transitions, 272 flow [2021-10-07 14:57:44,854 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 128 transitions, 272 flow [2021-10-07 14:57:44,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 126 places, 128 transitions, 272 flow [2021-10-07 14:57:44,984 INFO L129 PetriNetUnfolder]: 9/126 cut-off events. [2021-10-07 14:57:44,985 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-07 14:57:44,992 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 126 events. 9/126 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 153 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2021-10-07 14:57:44,998 INFO L116 LiptonReduction]: Number of co-enabled transitions 1400 [2021-10-07 14:57:50,492 INFO L131 LiptonReduction]: Checked pairs total: 4022 [2021-10-07 14:57:50,493 INFO L133 LiptonReduction]: Total number of compositions: 127 [2021-10-07 14:57:50,502 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 34 transitions, 84 flow [2021-10-07 14:57:50,529 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 219 states, 193 states have (on average 2.709844559585492) internal successors, (523), 218 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:50,533 INFO L276 IsEmpty]: Start isEmpty. Operand has 219 states, 193 states have (on average 2.709844559585492) internal successors, (523), 218 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:50,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 14:57:50,538 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:50,539 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 14:57:50,539 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:57:50,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:50,545 INFO L82 PathProgramCache]: Analyzing trace with hash 15857, now seen corresponding path program 1 times [2021-10-07 14:57:50,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:50,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582304081] [2021-10-07 14:57:50,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:50,558 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:50,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:50,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:50,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582304081] [2021-10-07 14:57:50,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582304081] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:50,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:50,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 14:57:50,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827175161] [2021-10-07 14:57:50,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:57:50,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:50,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:57:50,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:57:50,779 INFO L87 Difference]: Start difference. First operand has 219 states, 193 states have (on average 2.709844559585492) internal successors, (523), 218 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:50,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:50,832 INFO L93 Difference]: Finished difference Result 435 states and 1043 transitions. [2021-10-07 14:57:50,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:57:50,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-07 14:57:50,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:50,853 INFO L225 Difference]: With dead ends: 435 [2021-10-07 14:57:50,853 INFO L226 Difference]: Without dead ends: 435 [2021-10-07 14:57:50,855 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:57:50,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2021-10-07 14:57:50,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 220. [2021-10-07 14:57:50,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 194 states have (on average 2.7061855670103094) internal successors, (525), 219 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:50,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 525 transitions. [2021-10-07 14:57:50,922 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 525 transitions. Word has length 2 [2021-10-07 14:57:50,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:50,922 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 525 transitions. [2021-10-07 14:57:50,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:50,923 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 525 transitions. [2021-10-07 14:57:50,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 14:57:50,923 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:50,924 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 14:57:50,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-07 14:57:50,924 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:57:50,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:50,925 INFO L82 PathProgramCache]: Analyzing trace with hash 492048, now seen corresponding path program 1 times [2021-10-07 14:57:50,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:50,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593144263] [2021-10-07 14:57:50,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:50,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:51,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:51,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:51,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593144263] [2021-10-07 14:57:51,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593144263] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:51,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:51,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:57:51,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012887375] [2021-10-07 14:57:51,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:57:51,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:51,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:57:51,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:57:51,009 INFO L87 Difference]: Start difference. First operand 220 states and 525 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) [2021-10-07 14:57:51,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:51,029 INFO L93 Difference]: Finished difference Result 219 states and 524 transitions. [2021-10-07 14:57:51,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:57:51,030 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 [2021-10-07 14:57:51,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:51,032 INFO L225 Difference]: With dead ends: 219 [2021-10-07 14:57:51,033 INFO L226 Difference]: Without dead ends: 219 [2021-10-07 14:57:51,033 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:57:51,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-10-07 14:57:51,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2021-10-07 14:57:51,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 194 states have (on average 2.7010309278350517) internal successors, (524), 218 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:51,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 524 transitions. [2021-10-07 14:57:51,053 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 524 transitions. Word has length 3 [2021-10-07 14:57:51,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:51,054 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 524 transitions. [2021-10-07 14:57:51,054 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) [2021-10-07 14:57:51,054 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 524 transitions. [2021-10-07 14:57:51,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 14:57:51,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:51,055 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 14:57:51,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-07 14:57:51,056 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:57:51,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:51,060 INFO L82 PathProgramCache]: Analyzing trace with hash 492037, now seen corresponding path program 1 times [2021-10-07 14:57:51,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:51,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517486762] [2021-10-07 14:57:51,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:51,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:51,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:51,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:51,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517486762] [2021-10-07 14:57:51,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517486762] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:51,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28081600] [2021-10-07 14:57:51,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:51,117 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:51,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:57:51,119 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:57:51,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-07 14:57:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:51,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:57:51,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:57:51,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:51,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28081600] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:51,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:57:51,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-07 14:57:51,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242250294] [2021-10-07 14:57:51,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:57:51,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:51,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:57:51,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:57:51,271 INFO L87 Difference]: Start difference. First operand 219 states and 524 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:51,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:51,331 INFO L93 Difference]: Finished difference Result 650 states and 1562 transitions. [2021-10-07 14:57:51,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:57:51,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 14:57:51,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:51,340 INFO L225 Difference]: With dead ends: 650 [2021-10-07 14:57:51,341 INFO L226 Difference]: Without dead ends: 650 [2021-10-07 14:57:51,343 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:57:51,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2021-10-07 14:57:51,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 220. [2021-10-07 14:57:51,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 195 states have (on average 2.6974358974358976) internal successors, (526), 219 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:51,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 526 transitions. [2021-10-07 14:57:51,387 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 526 transitions. Word has length 3 [2021-10-07 14:57:51,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:51,387 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 526 transitions. [2021-10-07 14:57:51,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:51,388 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 526 transitions. [2021-10-07 14:57:51,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 14:57:51,390 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:51,390 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-07 14:57:51,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-07 14:57:51,591 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 [2021-10-07 14:57:51,593 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:57:51,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:51,594 INFO L82 PathProgramCache]: Analyzing trace with hash 15253958, now seen corresponding path program 2 times [2021-10-07 14:57:51,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:51,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928841384] [2021-10-07 14:57:51,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:51,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:51,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:51,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:51,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928841384] [2021-10-07 14:57:51,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928841384] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:51,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790682068] [2021-10-07 14:57:51,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:57:51,678 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:51,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:57:51,684 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:57:51,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-07 14:57:51,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:57:51,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:57:51,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 14:57:51,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:57:51,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:57:51,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790682068] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:51,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:57:51,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-07 14:57:51,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145659833] [2021-10-07 14:57:51,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:57:51,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:51,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:57:51,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:57:51,765 INFO L87 Difference]: Start difference. First operand 220 states and 526 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:51,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:51,777 INFO L93 Difference]: Finished difference Result 219 states and 525 transitions. [2021-10-07 14:57:51,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:57:51,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-07 14:57:51,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:51,781 INFO L225 Difference]: With dead ends: 219 [2021-10-07 14:57:51,781 INFO L226 Difference]: Without dead ends: 219 [2021-10-07 14:57:51,781 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:57:51,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-10-07 14:57:51,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 217. [2021-10-07 14:57:51,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 193 states have (on average 2.699481865284974) internal successors, (521), 216 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:51,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 521 transitions. [2021-10-07 14:57:51,813 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 521 transitions. Word has length 4 [2021-10-07 14:57:51,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:51,814 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 521 transitions. [2021-10-07 14:57:51,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:51,814 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 521 transitions. [2021-10-07 14:57:51,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 14:57:51,815 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:51,815 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 14:57:51,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-07 14:57:52,016 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 [2021-10-07 14:57:52,017 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:57:52,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:52,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1768721812, now seen corresponding path program 1 times [2021-10-07 14:57:52,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:52,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029364882] [2021-10-07 14:57:52,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:52,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:52,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:52,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:52,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029364882] [2021-10-07 14:57:52,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029364882] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:52,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:52,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-07 14:57:52,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463682379] [2021-10-07 14:57:52,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:57:52,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:52,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:57:52,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:57:52,084 INFO L87 Difference]: Start difference. First operand 217 states and 521 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:52,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:52,151 INFO L93 Difference]: Finished difference Result 293 states and 678 transitions. [2021-10-07 14:57:52,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:57:52,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-07 14:57:52,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:52,155 INFO L225 Difference]: With dead ends: 293 [2021-10-07 14:57:52,155 INFO L226 Difference]: Without dead ends: 289 [2021-10-07 14:57:52,156 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.6ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-07 14:57:52,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-10-07 14:57:52,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 255. [2021-10-07 14:57:52,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 231 states have (on average 2.6493506493506493) internal successors, (612), 254 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:52,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 612 transitions. [2021-10-07 14:57:52,174 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 612 transitions. Word has length 6 [2021-10-07 14:57:52,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:52,174 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 612 transitions. [2021-10-07 14:57:52,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:52,175 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 612 transitions. [2021-10-07 14:57:52,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 14:57:52,176 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:52,176 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:57:52,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-07 14:57:52,177 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:57:52,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:52,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1000072306, now seen corresponding path program 1 times [2021-10-07 14:57:52,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:52,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522156611] [2021-10-07 14:57:52,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:52,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:52,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:52,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522156611] [2021-10-07 14:57:52,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522156611] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:52,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:52,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-07 14:57:52,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728444081] [2021-10-07 14:57:52,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:57:52,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:52,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:57:52,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:57:52,239 INFO L87 Difference]: Start difference. First operand 255 states and 612 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:52,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:52,291 INFO L93 Difference]: Finished difference Result 241 states and 560 transitions. [2021-10-07 14:57:52,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:57:52,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 14:57:52,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:52,294 INFO L225 Difference]: With dead ends: 241 [2021-10-07 14:57:52,294 INFO L226 Difference]: Without dead ends: 218 [2021-10-07 14:57:52,294 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.5ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-07 14:57:52,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-10-07 14:57:52,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-10-07 14:57:52,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 194 states have (on average 2.6907216494845363) internal successors, (522), 217 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:52,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 522 transitions. [2021-10-07 14:57:52,303 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 522 transitions. Word has length 7 [2021-10-07 14:57:52,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:52,304 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 522 transitions. [2021-10-07 14:57:52,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:52,304 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 522 transitions. [2021-10-07 14:57:52,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 14:57:52,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:52,305 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:57:52,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-07 14:57:52,305 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:57:52,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:52,306 INFO L82 PathProgramCache]: Analyzing trace with hash -840521165, now seen corresponding path program 1 times [2021-10-07 14:57:52,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:52,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673007473] [2021-10-07 14:57:52,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:52,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:52,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:52,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:52,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673007473] [2021-10-07 14:57:52,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673007473] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:52,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688808696] [2021-10-07 14:57:52,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:52,527 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:52,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:57:52,528 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:57:52,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-07 14:57:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:52,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 14:57:52,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:57:52,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-07 14:57:52,787 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:57:52,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-10-07 14:57:52,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-07 14:57:52,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:52,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688808696] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:57:52,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:57:52,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 14:57:52,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661439088] [2021-10-07 14:57:52,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:57:52,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:52,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:57:52,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:57:52,902 INFO L87 Difference]: Start difference. First operand 218 states and 522 transitions. Second operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:53,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:53,193 INFO L93 Difference]: Finished difference Result 332 states and 880 transitions. [2021-10-07 14:57:53,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 14:57:53,194 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 14:57:53,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:53,198 INFO L225 Difference]: With dead ends: 332 [2021-10-07 14:57:53,198 INFO L226 Difference]: Without dead ends: 332 [2021-10-07 14:57:53,199 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 148.8ms TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-07 14:57:53,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-10-07 14:57:53,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 237. [2021-10-07 14:57:53,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 213 states have (on average 2.6901408450704225) internal successors, (573), 236 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:53,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 573 transitions. [2021-10-07 14:57:53,212 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 573 transitions. Word has length 7 [2021-10-07 14:57:53,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:53,212 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 573 transitions. [2021-10-07 14:57:53,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:57:53,213 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 573 transitions. [2021-10-07 14:57:53,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 14:57:53,214 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:53,214 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:57:53,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-07 14:57:53,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:57:53,428 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:57:53,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:53,429 INFO L82 PathProgramCache]: Analyzing trace with hash -282225969, now seen corresponding path program 1 times [2021-10-07 14:57:53,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:53,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084417479] [2021-10-07 14:57:53,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:53,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-07 14:57:53,455 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-07 14:57:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-07 14:57:53,495 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-07 14:57:53,496 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-07 14:57:53,497 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:53,499 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:53,500 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:53,500 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:53,501 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:53,501 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:53,501 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:53,501 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:53,502 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:53,502 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:53,502 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:53,502 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 14:57:53,503 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 14:57:53,503 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:53,503 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:53,503 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:53,503 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:53,504 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:53,504 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:53,504 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:57:53,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-07 14:57:53,513 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 14:57:53,513 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 14:57:53,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 02:57:53 BasicIcfg [2021-10-07 14:57:53,544 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 14:57:53,545 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-07 14:57:53,545 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-07 14:57:53,545 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-07 14:57:53,545 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:57:44" (3/4) ... [2021-10-07 14:57:53,548 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-07 14:57:53,595 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/weaver/popl20-bad-counter-queue.wvr.c-witness.graphml [2021-10-07 14:57:53,596 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-07 14:57:53,597 INFO L168 Benchmark]: Toolchain (without parser) took 10309.07 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 126.3 MB in the beginning and 106.6 MB in the end (delta: 19.7 MB). Peak memory consumption was 52.2 MB. Max. memory is 8.0 GB. [2021-10-07 14:57:53,597 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 153.1 MB. Free memory is still 136.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 14:57:53,601 INFO L168 Benchmark]: CACSL2BoogieTranslator took 499.08 ms. Allocated memory is still 153.1 MB. Free memory was 125.8 MB in the beginning and 115.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-07 14:57:53,602 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.80 ms. Allocated memory is still 153.1 MB. Free memory was 115.5 MB in the beginning and 113.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 14:57:53,602 INFO L168 Benchmark]: Boogie Preprocessor took 72.27 ms. Allocated memory is still 153.1 MB. Free memory was 113.8 MB in the beginning and 112.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 14:57:53,602 INFO L168 Benchmark]: RCFGBuilder took 632.50 ms. Allocated memory is still 153.1 MB. Free memory was 112.5 MB in the beginning and 125.6 MB in the end (delta: -13.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 8.0 GB. [2021-10-07 14:57:53,603 INFO L168 Benchmark]: TraceAbstraction took 8948.95 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 125.6 MB in the beginning and 109.7 MB in the end (delta: 15.9 MB). Peak memory consumption was 46.8 MB. Max. memory is 8.0 GB. [2021-10-07 14:57:53,603 INFO L168 Benchmark]: Witness Printer took 51.22 ms. Allocated memory is still 184.5 MB. Free memory was 109.2 MB in the beginning and 106.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 14:57:53,606 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 153.1 MB. Free memory is still 136.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 499.08 ms. Allocated memory is still 153.1 MB. Free memory was 125.8 MB in the beginning and 115.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 81.80 ms. Allocated memory is still 153.1 MB. Free memory was 115.5 MB in the beginning and 113.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 72.27 ms. Allocated memory is still 153.1 MB. Free memory was 113.8 MB in the beginning and 112.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 632.50 ms. Allocated memory is still 153.1 MB. Free memory was 112.5 MB in the beginning and 125.6 MB in the end (delta: -13.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8948.95 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 125.6 MB in the beginning and 109.7 MB in the end (delta: 15.9 MB). Peak memory consumption was 46.8 MB. Max. memory is 8.0 GB. * Witness Printer took 51.22 ms. Allocated memory is still 184.5 MB. Free memory was 109.2 MB in the beginning and 106.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5639.1ms, 126 PlacesBefore, 38 PlacesAfterwards, 128 TransitionsBefore, 34 TransitionsAfterwards, 1400 CoEnabledTransitionPairs, 7 FixpointIterations, 68 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 16 TrivialYvCompositions, 4 ConcurrentYvCompositions, 6 ChoiceCompositions, 127 TotalNumberOfCompositions, 4022 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2474, positive: 2293, positive conditional: 0, positive unconditional: 2293, negative: 181, negative conditional: 0, negative unconditional: 181, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 976, positive: 930, positive conditional: 0, positive unconditional: 930, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 976, positive: 922, positive conditional: 0, positive unconditional: 922, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 54, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 124, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 101, negative conditional: 0, negative unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2474, positive: 1363, positive conditional: 0, positive unconditional: 1363, negative: 135, negative conditional: 0, negative unconditional: 135, unknown: 976, unknown conditional: 0, unknown unconditional: 976] , Statistics on independence cache: Total cache size (in pairs): 166, Positive cache size: 141, Positive conditional cache size: 0, Positive unconditional cache size: 141, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25 - 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 - CounterExampleResult [Line: 56]: integer overflow possible integer overflow possible We found a FailurePath: [L41] 0 int* A; [L42] 0 int counter, N; [L63] 0 pthread_t t1, t2; [L65] 0 N = __VERIFIER_nondet_int() [L38] COND FALSE 0 !(!cond) [L38] COND FALSE 0 !(!cond) [L84] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L85] 0 int i = 0; VAL [A={0:0}, counter=0, N=1] [L85] COND TRUE 0 i < size [L86] 0 arr[i] = __VERIFIER_nondet_int() [L85] 0 i++ VAL [A={0:0}, counter=0, N=1] [L85] COND FALSE 0 !(i < size) [L88] 0 return arr; [L66] 0 A = create_fresh_int_array(N) [L69] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [A={-3:0}, counter=0, N=1] [L70] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [A={-3:0}, counter=0, N=1] [L55] 2 int i=0; VAL [A={-3:0}, counter=0, i=0, N=1] [L55] COND TRUE 2 i