/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/parallel-misc-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 15:52:23,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 15:52:23,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 15:52:23,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 15:52:23,834 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-08 15:52:23,888 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 15:52:23,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 15:52:23,889 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 15:52:23,889 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 15:52:23,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 15:52:23,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 15:52:23,894 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 15:52:23,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 15:52:23,894 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 15:52:23,894 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 15:52:23,896 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 15:52:23,896 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 15:52:23,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 15:52:23,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-08 15:52:23,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 15:52:23,897 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-08 15:52:23,897 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-08 15:52:23,897 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 15:52:23,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-08 15:52:23,897 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 15:52:23,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-08 15:52:23,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 15:52:23,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 15:52:23,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 15:52:23,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 15:52:23,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 15:52:23,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 15:52:23,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-08 15:52:23,899 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-08 15:52:23,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-08 15:52:23,899 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-08 15:52:23,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 15:52:23,900 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 15:52:24,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 15:52:24,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 15:52:24,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 15:52:24,352 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 15:52:24,353 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 15:52:24,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2021-10-08 15:52:24,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bb77a2d0/bbf6b9af73984a4bb17daab5af3863ae/FLAGa253a260c [2021-10-08 15:52:25,168 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 15:52:25,169 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2021-10-08 15:52:25,180 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bb77a2d0/bbf6b9af73984a4bb17daab5af3863ae/FLAGa253a260c [2021-10-08 15:52:25,531 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bb77a2d0/bbf6b9af73984a4bb17daab5af3863ae [2021-10-08 15:52:25,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 15:52:25,544 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-08 15:52:25,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 15:52:25,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 15:52:25,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 15:52:25,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 03:52:25" (1/1) ... [2021-10-08 15:52:25,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5351128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:52:25, skipping insertion in model container [2021-10-08 15:52:25,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 03:52:25" (1/1) ... [2021-10-08 15:52:25,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 15:52:25,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 15:52:25,792 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/parallel-misc-5.wvr.c[2646,2659] [2021-10-08 15:52:25,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 15:52:25,811 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 15:52:25,869 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/parallel-misc-5.wvr.c[2646,2659] [2021-10-08 15:52:25,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 15:52:25,913 INFO L208 MainTranslator]: Completed translation [2021-10-08 15:52:25,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:52:25 WrapperNode [2021-10-08 15:52:25,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 15:52:25,916 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 15:52:25,916 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 15:52:25,916 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 15:52:25,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:52:25" (1/1) ... [2021-10-08 15:52:25,956 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:52:25" (1/1) ... [2021-10-08 15:52:25,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 15:52:25,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 15:52:25,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 15:52:25,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 15:52:26,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:52:25" (1/1) ... [2021-10-08 15:52:26,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:52:25" (1/1) ... [2021-10-08 15:52:26,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:52:25" (1/1) ... [2021-10-08 15:52:26,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:52:25" (1/1) ... [2021-10-08 15:52:26,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:52:25" (1/1) ... [2021-10-08 15:52:26,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:52:25" (1/1) ... [2021-10-08 15:52:26,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:52:25" (1/1) ... [2021-10-08 15:52:26,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 15:52:26,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 15:52:26,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 15:52:26,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 15:52:26,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:52:25" (1/1) ... [2021-10-08 15:52:26,044 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 15:52:26,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:52:26,082 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 15:52:26,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 15:52:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 15:52:26,166 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 15:52:26,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 15:52:26,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 15:52:26,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 15:52:26,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 15:52:26,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-08 15:52:26,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 15:52:26,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-08 15:52:26,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 15:52:26,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 15:52:26,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 15:52:26,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 15:52:26,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-08 15:52:26,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 15:52:26,171 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 15:52:27,028 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 15:52:27,028 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-08 15:52:27,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 03:52:27 BoogieIcfgContainer [2021-10-08 15:52:27,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 15:52:27,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 15:52:27,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 15:52:27,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 15:52:27,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 03:52:25" (1/3) ... [2021-10-08 15:52:27,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc3ceb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 03:52:27, skipping insertion in model container [2021-10-08 15:52:27,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:52:25" (2/3) ... [2021-10-08 15:52:27,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc3ceb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 03:52:27, skipping insertion in model container [2021-10-08 15:52:27,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 03:52:27" (3/3) ... [2021-10-08 15:52:27,041 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2021-10-08 15:52:27,047 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-08 15:52:27,048 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 15:52:27,048 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-10-08 15:52:27,048 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 15:52:27,087 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,087 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,087 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,088 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,088 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,088 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,089 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,089 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,089 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,090 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,090 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,090 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,090 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,091 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,091 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,091 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,092 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,092 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,092 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,092 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,093 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,093 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,093 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,093 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,094 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,094 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,094 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,094 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,095 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,095 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,095 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,095 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,096 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,096 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,096 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,096 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,097 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,097 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,097 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,097 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,098 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,098 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,098 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,098 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,099 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,099 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,099 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,099 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,100 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,100 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,100 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,101 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,101 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,101 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,101 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,101 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,102 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,102 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,102 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,102 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,103 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,103 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,103 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,104 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,105 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,105 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,106 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,106 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,106 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,106 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,107 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,107 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,107 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,107 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,108 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,108 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,108 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,108 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,109 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,109 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,109 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,110 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,110 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,110 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,110 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,111 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,111 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,111 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,112 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,112 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,112 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,112 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,113 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,113 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,113 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,113 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,114 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,114 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,114 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,114 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,115 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,115 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,115 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,115 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,116 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,116 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,116 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,116 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,117 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,117 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,117 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,117 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,118 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,118 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,118 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,118 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,119 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,119 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,119 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,119 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,119 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,120 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,120 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,120 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,120 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,121 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,121 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,121 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,122 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,122 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,122 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,122 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,126 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,127 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,127 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,127 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,128 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,128 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,128 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,128 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,129 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,131 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,131 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,131 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,132 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,132 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,132 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,132 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,133 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,133 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,135 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,135 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:52:27,143 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-08 15:52:27,196 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 15:52:27,204 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-08 15:52:27,205 INFO L340 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2021-10-08 15:52:27,222 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 15:52:27,235 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 114 transitions, 252 flow [2021-10-08 15:52:27,238 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 114 transitions, 252 flow [2021-10-08 15:52:27,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 117 places, 114 transitions, 252 flow [2021-10-08 15:52:27,298 INFO L129 PetriNetUnfolder]: 7/111 cut-off events. [2021-10-08 15:52:27,298 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-08 15:52:27,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 111 events. 7/111 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 150 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 90. Up to 3 conditions per place. [2021-10-08 15:52:27,312 INFO L116 LiptonReduction]: Number of co-enabled transitions 2030 [2021-10-08 15:52:32,639 INFO L131 LiptonReduction]: Checked pairs total: 6706 [2021-10-08 15:52:32,639 INFO L133 LiptonReduction]: Total number of compositions: 100 [2021-10-08 15:52:32,649 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 43 transitions, 110 flow [2021-10-08 15:52:32,731 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 930 states, 849 states have (on average 3.402826855123675) internal successors, (2889), 929 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:32,737 INFO L276 IsEmpty]: Start isEmpty. Operand has 930 states, 849 states have (on average 3.402826855123675) internal successors, (2889), 929 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:32,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 15:52:32,745 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:52:32,746 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 15:52:32,748 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:52:32,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:52:32,756 INFO L82 PathProgramCache]: Analyzing trace with hash 550755, now seen corresponding path program 1 times [2021-10-08 15:52:32,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:52:32,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118088079] [2021-10-08 15:52:32,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:52:32,772 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:52:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:52:32,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:32,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:52:32,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118088079] [2021-10-08 15:52:32,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118088079] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:52:32,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:52:32,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 15:52:32,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974952186] [2021-10-08 15:52:32,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:52:33,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:52:33,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:52:33,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:52:33,021 INFO L87 Difference]: Start difference. First operand has 930 states, 849 states have (on average 3.402826855123675) internal successors, (2889), 929 states have internal predecessors, (2889), 0 states have call successors, (0), 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 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:33,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:52:33,139 INFO L93 Difference]: Finished difference Result 898 states and 2986 transitions. [2021-10-08 15:52:33,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:52:33,142 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 3 [2021-10-08 15:52:33,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:52:33,205 INFO L225 Difference]: With dead ends: 898 [2021-10-08 15:52:33,205 INFO L226 Difference]: Without dead ends: 894 [2021-10-08 15:52:33,207 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:52:33,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2021-10-08 15:52:33,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 894. [2021-10-08 15:52:33,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 831 states have (on average 3.5812274368231045) internal successors, (2976), 893 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:33,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 2976 transitions. [2021-10-08 15:52:33,361 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 2976 transitions. Word has length 3 [2021-10-08 15:52:33,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:52:33,363 INFO L470 AbstractCegarLoop]: Abstraction has 894 states and 2976 transitions. [2021-10-08 15:52:33,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:33,364 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 2976 transitions. [2021-10-08 15:52:33,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 15:52:33,365 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:52:33,365 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-08 15:52:33,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-08 15:52:33,366 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:52:33,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:52:33,367 INFO L82 PathProgramCache]: Analyzing trace with hash 17071672, now seen corresponding path program 1 times [2021-10-08 15:52:33,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:52:33,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273600960] [2021-10-08 15:52:33,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:52:33,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:52:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:52:33,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:33,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:52:33,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273600960] [2021-10-08 15:52:33,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273600960] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:52:33,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:52:33,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 15:52:33,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177975314] [2021-10-08 15:52:33,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:52:33,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:52:33,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:52:33,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:52:33,441 INFO L87 Difference]: Start difference. First operand 894 states and 2976 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:33,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:52:33,503 INFO L93 Difference]: Finished difference Result 1244 states and 4174 transitions. [2021-10-08 15:52:33,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:52:33,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-08 15:52:33,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:52:33,517 INFO L225 Difference]: With dead ends: 1244 [2021-10-08 15:52:33,517 INFO L226 Difference]: Without dead ends: 1244 [2021-10-08 15:52:33,518 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:52:33,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2021-10-08 15:52:33,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1024. [2021-10-08 15:52:33,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 961 states have (on average 3.7544224765868885) internal successors, (3608), 1023 states have internal predecessors, (3608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:33,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 3608 transitions. [2021-10-08 15:52:33,565 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 3608 transitions. Word has length 4 [2021-10-08 15:52:33,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:52:33,566 INFO L470 AbstractCegarLoop]: Abstraction has 1024 states and 3608 transitions. [2021-10-08 15:52:33,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:33,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 3608 transitions. [2021-10-08 15:52:33,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 15:52:33,567 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:52:33,567 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 15:52:33,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-08 15:52:33,568 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:52:33,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:52:33,568 INFO L82 PathProgramCache]: Analyzing trace with hash 529222275, now seen corresponding path program 1 times [2021-10-08 15:52:33,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:52:33,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368550629] [2021-10-08 15:52:33,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:52:33,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:52:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:52:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:33,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:52:33,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368550629] [2021-10-08 15:52:33,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368550629] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:52:33,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:52:33,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 15:52:33,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538177091] [2021-10-08 15:52:33,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:52:33,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:52:33,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:52:33,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:52:33,613 INFO L87 Difference]: Start difference. First operand 1024 states and 3608 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:33,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:52:33,656 INFO L93 Difference]: Finished difference Result 874 states and 3078 transitions. [2021-10-08 15:52:33,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:52:33,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 15:52:33,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:52:33,665 INFO L225 Difference]: With dead ends: 874 [2021-10-08 15:52:33,666 INFO L226 Difference]: Without dead ends: 874 [2021-10-08 15:52:33,666 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:52:33,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-10-08 15:52:33,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 874. [2021-10-08 15:52:33,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 826 states have (on average 3.7263922518159807) internal successors, (3078), 873 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:33,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 3078 transitions. [2021-10-08 15:52:33,702 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 3078 transitions. Word has length 5 [2021-10-08 15:52:33,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:52:33,702 INFO L470 AbstractCegarLoop]: Abstraction has 874 states and 3078 transitions. [2021-10-08 15:52:33,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:33,702 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 3078 transitions. [2021-10-08 15:52:33,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 15:52:33,703 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:52:33,703 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 15:52:33,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-08 15:52:33,704 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:52:33,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:52:33,704 INFO L82 PathProgramCache]: Analyzing trace with hash 529222261, now seen corresponding path program 1 times [2021-10-08 15:52:33,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:52:33,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995240680] [2021-10-08 15:52:33,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:52:33,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:52:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:52:33,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:33,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:52:33,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995240680] [2021-10-08 15:52:33,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995240680] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:52:33,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:52:33,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 15:52:33,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577764451] [2021-10-08 15:52:33,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:52:33,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:52:33,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:52:33,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:52:33,764 INFO L87 Difference]: Start difference. First operand 874 states and 3078 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:33,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:52:33,807 INFO L93 Difference]: Finished difference Result 736 states and 2596 transitions. [2021-10-08 15:52:33,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:52:33,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 15:52:33,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:52:33,816 INFO L225 Difference]: With dead ends: 736 [2021-10-08 15:52:33,816 INFO L226 Difference]: Without dead ends: 736 [2021-10-08 15:52:33,817 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:52:33,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-10-08 15:52:33,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 736. [2021-10-08 15:52:33,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 701 states have (on average 3.7032810271041368) internal successors, (2596), 735 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:33,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 2596 transitions. [2021-10-08 15:52:33,851 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 2596 transitions. Word has length 5 [2021-10-08 15:52:33,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:52:33,852 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 2596 transitions. [2021-10-08 15:52:33,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:33,853 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 2596 transitions. [2021-10-08 15:52:33,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 15:52:33,853 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:52:33,854 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2021-10-08 15:52:33,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-08 15:52:33,854 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:52:33,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:52:33,855 INFO L82 PathProgramCache]: Analyzing trace with hash -773980393, now seen corresponding path program 1 times [2021-10-08 15:52:33,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:52:33,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099050888] [2021-10-08 15:52:33,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:52:33,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:52:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:52:33,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:33,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:52:33,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099050888] [2021-10-08 15:52:33,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099050888] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:52:33,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559765693] [2021-10-08 15:52:33,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:52:33,908 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:52:33,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:52:33,910 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:52:33,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-08 15:52:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:52:33,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 15:52:33,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:52:34,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:34,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559765693] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:52:34,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:52:34,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2021-10-08 15:52:34,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112702245] [2021-10-08 15:52:34,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:52:34,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:52:34,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:52:34,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:52:34,061 INFO L87 Difference]: Start difference. First operand 736 states and 2596 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:34,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:52:34,174 INFO L93 Difference]: Finished difference Result 1168 states and 4140 transitions. [2021-10-08 15:52:34,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:52:34,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-08 15:52:34,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:52:34,187 INFO L225 Difference]: With dead ends: 1168 [2021-10-08 15:52:34,187 INFO L226 Difference]: Without dead ends: 1168 [2021-10-08 15:52:34,188 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:52:34,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2021-10-08 15:52:34,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1044. [2021-10-08 15:52:34,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 1009 states have (on average 3.9663032705649157) internal successors, (4002), 1043 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:34,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 4002 transitions. [2021-10-08 15:52:34,294 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 4002 transitions. Word has length 6 [2021-10-08 15:52:34,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:52:34,294 INFO L470 AbstractCegarLoop]: Abstraction has 1044 states and 4002 transitions. [2021-10-08 15:52:34,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:34,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 4002 transitions. [2021-10-08 15:52:34,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 15:52:34,296 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:52:34,296 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 15:52:34,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-08 15:52:34,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:52:34,511 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:52:34,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:52:34,512 INFO L82 PathProgramCache]: Analyzing trace with hash -771517803, now seen corresponding path program 1 times [2021-10-08 15:52:34,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:52:34,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926936402] [2021-10-08 15:52:34,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:52:34,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:52:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:52:34,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:34,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:52:34,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926936402] [2021-10-08 15:52:34,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926936402] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:52:34,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:52:34,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 15:52:34,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650553700] [2021-10-08 15:52:34,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:52:34,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:52:34,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:52:34,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:52:34,559 INFO L87 Difference]: Start difference. First operand 1044 states and 4002 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:34,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:52:34,629 INFO L93 Difference]: Finished difference Result 1324 states and 5004 transitions. [2021-10-08 15:52:34,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:52:34,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-08 15:52:34,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:52:34,643 INFO L225 Difference]: With dead ends: 1324 [2021-10-08 15:52:34,643 INFO L226 Difference]: Without dead ends: 1324 [2021-10-08 15:52:34,644 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:52:34,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2021-10-08 15:52:34,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1220. [2021-10-08 15:52:34,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1185 states have (on average 3.981434599156118) internal successors, (4718), 1219 states have internal predecessors, (4718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:34,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 4718 transitions. [2021-10-08 15:52:34,706 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 4718 transitions. Word has length 6 [2021-10-08 15:52:34,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:52:34,711 INFO L470 AbstractCegarLoop]: Abstraction has 1220 states and 4718 transitions. [2021-10-08 15:52:34,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:34,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 4718 transitions. [2021-10-08 15:52:34,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 15:52:34,714 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:52:34,715 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2021-10-08 15:52:34,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-08 15:52:34,715 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:52:34,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:52:34,716 INFO L82 PathProgramCache]: Analyzing trace with hash -765802505, now seen corresponding path program 2 times [2021-10-08 15:52:34,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:52:34,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762815057] [2021-10-08 15:52:34,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:52:34,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:52:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:52:34,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:34,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:52:34,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762815057] [2021-10-08 15:52:34,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762815057] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:52:34,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702787409] [2021-10-08 15:52:34,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:52:34,816 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:52:34,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:52:34,821 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:52:34,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-08 15:52:34,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 15:52:34,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:52:34,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 15:52:34,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:52:34,934 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:34,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702787409] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:52:34,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:52:34,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-08 15:52:34,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475152293] [2021-10-08 15:52:34,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 15:52:34,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:52:34,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 15:52:34,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:52:34,937 INFO L87 Difference]: Start difference. First operand 1220 states and 4718 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:35,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:52:35,045 INFO L93 Difference]: Finished difference Result 2406 states and 9006 transitions. [2021-10-08 15:52:35,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 15:52:35,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-08 15:52:35,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:52:35,074 INFO L225 Difference]: With dead ends: 2406 [2021-10-08 15:52:35,074 INFO L226 Difference]: Without dead ends: 2406 [2021-10-08 15:52:35,075 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:52:35,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2406 states. [2021-10-08 15:52:35,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2406 to 1628. [2021-10-08 15:52:35,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1593 states have (on average 4.123038292529818) internal successors, (6568), 1627 states have internal predecessors, (6568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:35,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 6568 transitions. [2021-10-08 15:52:35,186 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 6568 transitions. Word has length 8 [2021-10-08 15:52:35,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:52:35,186 INFO L470 AbstractCegarLoop]: Abstraction has 1628 states and 6568 transitions. [2021-10-08 15:52:35,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:35,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 6568 transitions. [2021-10-08 15:52:35,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 15:52:35,188 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:52:35,188 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:52:35,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-08 15:52:35,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-08 15:52:35,408 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:52:35,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:52:35,410 INFO L82 PathProgramCache]: Analyzing trace with hash -763339915, now seen corresponding path program 1 times [2021-10-08 15:52:35,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:52:35,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746533268] [2021-10-08 15:52:35,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:52:35,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:52:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:52:35,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:35,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:52:35,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746533268] [2021-10-08 15:52:35,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746533268] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:52:35,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:52:35,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 15:52:35,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125244683] [2021-10-08 15:52:35,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:52:35,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:52:35,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:52:35,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:52:35,510 INFO L87 Difference]: Start difference. First operand 1628 states and 6568 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:35,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:52:35,606 INFO L93 Difference]: Finished difference Result 1716 states and 6542 transitions. [2021-10-08 15:52:35,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:52:35,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-08 15:52:35,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:52:35,627 INFO L225 Difference]: With dead ends: 1716 [2021-10-08 15:52:35,627 INFO L226 Difference]: Without dead ends: 1686 [2021-10-08 15:52:35,631 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:52:35,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2021-10-08 15:52:35,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1652. [2021-10-08 15:52:35,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1652 states, 1616 states have (on average 3.9566831683168315) internal successors, (6394), 1651 states have internal predecessors, (6394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:35,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 6394 transitions. [2021-10-08 15:52:35,717 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 6394 transitions. Word has length 8 [2021-10-08 15:52:35,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:52:35,717 INFO L470 AbstractCegarLoop]: Abstraction has 1652 states and 6394 transitions. [2021-10-08 15:52:35,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:35,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 6394 transitions. [2021-10-08 15:52:35,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 15:52:35,723 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:52:35,723 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:52:35,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-08 15:52:35,724 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:52:35,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:52:35,725 INFO L82 PathProgramCache]: Analyzing trace with hash -763339911, now seen corresponding path program 1 times [2021-10-08 15:52:35,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:52:35,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282225059] [2021-10-08 15:52:35,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:52:35,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:52:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:52:35,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:35,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:52:35,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282225059] [2021-10-08 15:52:35,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282225059] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:52:35,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:52:35,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 15:52:35,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512193746] [2021-10-08 15:52:35,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:52:35,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:52:35,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:52:35,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:52:35,830 INFO L87 Difference]: Start difference. First operand 1652 states and 6394 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:35,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:52:35,880 INFO L93 Difference]: Finished difference Result 1576 states and 5926 transitions. [2021-10-08 15:52:35,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:52:35,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-08 15:52:35,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:52:35,898 INFO L225 Difference]: With dead ends: 1576 [2021-10-08 15:52:35,898 INFO L226 Difference]: Without dead ends: 1576 [2021-10-08 15:52:35,898 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:52:35,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2021-10-08 15:52:35,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1564. [2021-10-08 15:52:35,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1564 states, 1534 states have (on average 3.847457627118644) internal successors, (5902), 1563 states have internal predecessors, (5902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:35,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 5902 transitions. [2021-10-08 15:52:35,970 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 5902 transitions. Word has length 8 [2021-10-08 15:52:35,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:52:35,970 INFO L470 AbstractCegarLoop]: Abstraction has 1564 states and 5902 transitions. [2021-10-08 15:52:35,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:35,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 5902 transitions. [2021-10-08 15:52:35,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 15:52:35,971 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:52:35,972 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:52:35,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-08 15:52:35,972 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:52:35,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:52:35,973 INFO L82 PathProgramCache]: Analyzing trace with hash -718091272, now seen corresponding path program 1 times [2021-10-08 15:52:35,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:52:35,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99299931] [2021-10-08 15:52:35,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:52:35,973 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:52:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:52:36,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:36,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:52:36,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99299931] [2021-10-08 15:52:36,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99299931] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:52:36,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:52:36,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 15:52:36,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465329753] [2021-10-08 15:52:36,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 15:52:36,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:52:36,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 15:52:36,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:52:36,039 INFO L87 Difference]: Start difference. First operand 1564 states and 5902 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:36,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:52:36,120 INFO L93 Difference]: Finished difference Result 1480 states and 5414 transitions. [2021-10-08 15:52:36,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 15:52:36,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-08 15:52:36,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:52:36,132 INFO L225 Difference]: With dead ends: 1480 [2021-10-08 15:52:36,133 INFO L226 Difference]: Without dead ends: 1474 [2021-10-08 15:52:36,133 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.1ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-08 15:52:36,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-10-08 15:52:36,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1452. [2021-10-08 15:52:36,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1427 states have (on average 3.7645409950946043) internal successors, (5372), 1451 states have internal predecessors, (5372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:36,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 5372 transitions. [2021-10-08 15:52:36,193 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 5372 transitions. Word has length 8 [2021-10-08 15:52:36,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:52:36,194 INFO L470 AbstractCegarLoop]: Abstraction has 1452 states and 5372 transitions. [2021-10-08 15:52:36,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:36,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 5372 transitions. [2021-10-08 15:52:36,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 15:52:36,195 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:52:36,195 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:52:36,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-08 15:52:36,196 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:52:36,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:52:36,196 INFO L82 PathProgramCache]: Analyzing trace with hash -718091270, now seen corresponding path program 1 times [2021-10-08 15:52:36,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:52:36,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287706459] [2021-10-08 15:52:36,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:52:36,197 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:52:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:52:36,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:36,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:52:36,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287706459] [2021-10-08 15:52:36,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287706459] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:52:36,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:52:36,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 15:52:36,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561252871] [2021-10-08 15:52:36,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 15:52:36,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:52:36,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 15:52:36,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:52:36,257 INFO L87 Difference]: Start difference. First operand 1452 states and 5372 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:36,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:52:36,348 INFO L93 Difference]: Finished difference Result 2198 states and 8124 transitions. [2021-10-08 15:52:36,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 15:52:36,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-08 15:52:36,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:52:36,362 INFO L225 Difference]: With dead ends: 2198 [2021-10-08 15:52:36,362 INFO L226 Difference]: Without dead ends: 2198 [2021-10-08 15:52:36,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.9ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:52:36,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2198 states. [2021-10-08 15:52:36,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2198 to 1860. [2021-10-08 15:52:36,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1860 states, 1835 states have (on average 3.9444141689373295) internal successors, (7238), 1859 states have internal predecessors, (7238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:36,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1860 states to 1860 states and 7238 transitions. [2021-10-08 15:52:36,472 INFO L78 Accepts]: Start accepts. Automaton has 1860 states and 7238 transitions. Word has length 8 [2021-10-08 15:52:36,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:52:36,473 INFO L470 AbstractCegarLoop]: Abstraction has 1860 states and 7238 transitions. [2021-10-08 15:52:36,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:36,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1860 states and 7238 transitions. [2021-10-08 15:52:36,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 15:52:36,475 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:52:36,475 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2021-10-08 15:52:36,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-08 15:52:36,475 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:52:36,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:52:36,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1496786729, now seen corresponding path program 3 times [2021-10-08 15:52:36,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:52:36,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882282345] [2021-10-08 15:52:36,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:52:36,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:52:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:52:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:36,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:52:36,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882282345] [2021-10-08 15:52:36,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882282345] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:52:36,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083296181] [2021-10-08 15:52:36,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 15:52:36,520 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:52:36,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:52:36,522 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:52:36,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-08 15:52:36,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 15:52:36,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:52:36,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 15:52:36,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:52:36,686 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:36,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083296181] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:52:36,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:52:36,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-08 15:52:36,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451503486] [2021-10-08 15:52:36,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 15:52:36,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:52:36,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 15:52:36,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 15:52:36,689 INFO L87 Difference]: Start difference. First operand 1860 states and 7238 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:36,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:52:36,800 INFO L93 Difference]: Finished difference Result 3812 states and 14220 transitions. [2021-10-08 15:52:36,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 15:52:36,801 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-08 15:52:36,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:52:36,824 INFO L225 Difference]: With dead ends: 3812 [2021-10-08 15:52:36,824 INFO L226 Difference]: Without dead ends: 3812 [2021-10-08 15:52:36,824 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.3ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 15:52:36,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3812 states. [2021-10-08 15:52:36,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3812 to 2416. [2021-10-08 15:52:36,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2416 states, 2391 states have (on average 3.9673776662484315) internal successors, (9486), 2415 states have internal predecessors, (9486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:36,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2416 states to 2416 states and 9486 transitions. [2021-10-08 15:52:36,955 INFO L78 Accepts]: Start accepts. Automaton has 2416 states and 9486 transitions. Word has length 10 [2021-10-08 15:52:36,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:52:36,956 INFO L470 AbstractCegarLoop]: Abstraction has 2416 states and 9486 transitions. [2021-10-08 15:52:36,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:36,956 INFO L276 IsEmpty]: Start isEmpty. Operand 2416 states and 9486 transitions. [2021-10-08 15:52:36,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 15:52:36,957 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:52:36,957 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:52:36,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-08 15:52:37,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:52:37,172 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:52:37,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:52:37,173 INFO L82 PathProgramCache]: Analyzing trace with hash 869765652, now seen corresponding path program 1 times [2021-10-08 15:52:37,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:52:37,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128888765] [2021-10-08 15:52:37,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:52:37,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:52:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:52:37,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:37,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:52:37,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128888765] [2021-10-08 15:52:37,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128888765] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:52:37,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256843472] [2021-10-08 15:52:37,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:52:37,217 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:52:37,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:52:37,219 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:52:37,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-08 15:52:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:52:37,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 15:52:37,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:52:37,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:37,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256843472] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:52:37,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:52:37,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2] total 4 [2021-10-08 15:52:37,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436659326] [2021-10-08 15:52:37,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 15:52:37,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:52:37,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 15:52:37,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 15:52:37,376 INFO L87 Difference]: Start difference. First operand 2416 states and 9486 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:37,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:52:37,450 INFO L93 Difference]: Finished difference Result 4444 states and 16818 transitions. [2021-10-08 15:52:37,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 15:52:37,451 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-08 15:52:37,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:52:37,478 INFO L225 Difference]: With dead ends: 4444 [2021-10-08 15:52:37,478 INFO L226 Difference]: Without dead ends: 4404 [2021-10-08 15:52:37,479 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 11.3ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 15:52:37,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4404 states. [2021-10-08 15:52:37,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4404 to 3614. [2021-10-08 15:52:37,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3614 states, 3586 states have (on average 4.098159509202454) internal successors, (14696), 3613 states have internal predecessors, (14696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:37,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 14696 transitions. [2021-10-08 15:52:37,687 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 14696 transitions. Word has length 10 [2021-10-08 15:52:37,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:52:37,687 INFO L470 AbstractCegarLoop]: Abstraction has 3614 states and 14696 transitions. [2021-10-08 15:52:37,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:37,688 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 14696 transitions. [2021-10-08 15:52:37,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 15:52:37,690 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:52:37,690 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:52:37,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-08 15:52:37,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-08 15:52:37,905 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:52:37,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:52:37,906 INFO L82 PathProgramCache]: Analyzing trace with hash 869765681, now seen corresponding path program 1 times [2021-10-08 15:52:37,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:52:37,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547404025] [2021-10-08 15:52:37,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:52:37,907 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:52:37,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:52:37,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:37,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:52:37,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547404025] [2021-10-08 15:52:37,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547404025] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:52:37,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:52:37,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 15:52:37,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630978156] [2021-10-08 15:52:37,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:52:37,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:52:37,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:52:37,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:52:37,937 INFO L87 Difference]: Start difference. First operand 3614 states and 14696 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:38,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:52:38,023 INFO L93 Difference]: Finished difference Result 5368 states and 21128 transitions. [2021-10-08 15:52:38,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:52:38,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-08 15:52:38,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:52:38,056 INFO L225 Difference]: With dead ends: 5368 [2021-10-08 15:52:38,056 INFO L226 Difference]: Without dead ends: 5368 [2021-10-08 15:52:38,057 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:52:38,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5368 states. [2021-10-08 15:52:38,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5368 to 4390. [2021-10-08 15:52:38,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4390 states, 4362 states have (on average 4.116001834021091) internal successors, (17954), 4389 states have internal predecessors, (17954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:38,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4390 states to 4390 states and 17954 transitions. [2021-10-08 15:52:38,350 INFO L78 Accepts]: Start accepts. Automaton has 4390 states and 17954 transitions. Word has length 10 [2021-10-08 15:52:38,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:52:38,350 INFO L470 AbstractCegarLoop]: Abstraction has 4390 states and 17954 transitions. [2021-10-08 15:52:38,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:38,350 INFO L276 IsEmpty]: Start isEmpty. Operand 4390 states and 17954 transitions. [2021-10-08 15:52:38,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 15:52:38,352 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:52:38,352 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:52:38,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-08 15:52:38,352 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:52:38,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:52:38,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1404050944, now seen corresponding path program 1 times [2021-10-08 15:52:38,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:52:38,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845696230] [2021-10-08 15:52:38,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:52:38,354 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:52:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:52:38,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:38,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:52:38,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845696230] [2021-10-08 15:52:38,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845696230] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:52:38,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593047617] [2021-10-08 15:52:38,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:52:38,401 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:52:38,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:52:38,402 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:52:38,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-08 15:52:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:52:38,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 15:52:38,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:52:38,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 15:52:38,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593047617] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:52:38,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:52:38,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [2] total 3 [2021-10-08 15:52:38,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256823086] [2021-10-08 15:52:38,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:52:38,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:52:38,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:52:38,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:52:38,607 INFO L87 Difference]: Start difference. First operand 4390 states and 17954 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:38,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:52:38,670 INFO L93 Difference]: Finished difference Result 4532 states and 17690 transitions. [2021-10-08 15:52:38,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:52:38,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-08 15:52:38,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:52:38,703 INFO L225 Difference]: With dead ends: 4532 [2021-10-08 15:52:38,703 INFO L226 Difference]: Without dead ends: 4478 [2021-10-08 15:52:38,705 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.4ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:52:38,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4478 states. [2021-10-08 15:52:38,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4478 to 4264. [2021-10-08 15:52:38,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4235 states have (on average 3.990082644628099) internal successors, (16898), 4263 states have internal predecessors, (16898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:38,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 16898 transitions. [2021-10-08 15:52:38,933 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 16898 transitions. Word has length 10 [2021-10-08 15:52:38,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:52:38,933 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 16898 transitions. [2021-10-08 15:52:38,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:38,934 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 16898 transitions. [2021-10-08 15:52:38,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 15:52:38,936 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:52:38,936 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2021-10-08 15:52:38,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-08 15:52:39,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:52:39,152 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:52:39,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:52:39,153 INFO L82 PathProgramCache]: Analyzing trace with hash 402010551, now seen corresponding path program 4 times [2021-10-08 15:52:39,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:52:39,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017139004] [2021-10-08 15:52:39,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:52:39,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:52:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:52:39,201 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:39,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:52:39,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017139004] [2021-10-08 15:52:39,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017139004] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:52:39,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197554352] [2021-10-08 15:52:39,203 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 15:52:39,203 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:52:39,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:52:39,204 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:52:39,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-08 15:52:39,347 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 15:52:39,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:52:39,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 15:52:39,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:52:39,400 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:39,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197554352] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:52:39,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:52:39,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-08 15:52:39,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389524036] [2021-10-08 15:52:39,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 15:52:39,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:52:39,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 15:52:39,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-08 15:52:39,403 INFO L87 Difference]: Start difference. First operand 4264 states and 16898 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:39,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:52:39,639 INFO L93 Difference]: Finished difference Result 8516 states and 32718 transitions. [2021-10-08 15:52:39,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 15:52:39,646 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-08 15:52:39,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:52:39,715 INFO L225 Difference]: With dead ends: 8516 [2021-10-08 15:52:39,715 INFO L226 Difference]: Without dead ends: 8516 [2021-10-08 15:52:39,715 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.9ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-08 15:52:39,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8516 states. [2021-10-08 15:52:39,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8516 to 5394. [2021-10-08 15:52:40,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5394 states, 5365 states have (on average 4.018266542404473) internal successors, (21558), 5393 states have internal predecessors, (21558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:40,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5394 states to 5394 states and 21558 transitions. [2021-10-08 15:52:40,036 INFO L78 Accepts]: Start accepts. Automaton has 5394 states and 21558 transitions. Word has length 12 [2021-10-08 15:52:40,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:52:40,036 INFO L470 AbstractCegarLoop]: Abstraction has 5394 states and 21558 transitions. [2021-10-08 15:52:40,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:40,037 INFO L276 IsEmpty]: Start isEmpty. Operand 5394 states and 21558 transitions. [2021-10-08 15:52:40,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 15:52:40,039 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:52:40,039 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:52:40,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-08 15:52:40,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-08 15:52:40,255 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:52:40,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:52:40,256 INFO L82 PathProgramCache]: Analyzing trace with hash -992119072, now seen corresponding path program 1 times [2021-10-08 15:52:40,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:52:40,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431065181] [2021-10-08 15:52:40,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:52:40,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:52:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:52:40,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:40,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:52:40,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431065181] [2021-10-08 15:52:40,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431065181] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:52:40,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646758357] [2021-10-08 15:52:40,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:52:40,310 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:52:40,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:52:40,311 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:52:40,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-08 15:52:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:52:40,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 15:52:40,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:52:40,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 15:52:40,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646758357] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:52:40,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:52:40,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2] total 5 [2021-10-08 15:52:40,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047759235] [2021-10-08 15:52:40,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 15:52:40,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:52:40,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 15:52:40,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-08 15:52:40,465 INFO L87 Difference]: Start difference. First operand 5394 states and 21558 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:40,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:52:40,810 INFO L93 Difference]: Finished difference Result 15140 states and 57080 transitions. [2021-10-08 15:52:40,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 15:52:40,811 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-08 15:52:40,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:52:40,927 INFO L225 Difference]: With dead ends: 15140 [2021-10-08 15:52:40,927 INFO L226 Difference]: Without dead ends: 15062 [2021-10-08 15:52:40,927 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 37.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-10-08 15:52:40,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15062 states. [2021-10-08 15:52:41,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15062 to 9988. [2021-10-08 15:52:41,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9988 states, 9956 states have (on average 4.220369626355966) internal successors, (42018), 9987 states have internal predecessors, (42018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:41,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9988 states to 9988 states and 42018 transitions. [2021-10-08 15:52:41,647 INFO L78 Accepts]: Start accepts. Automaton has 9988 states and 42018 transitions. Word has length 12 [2021-10-08 15:52:41,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:52:41,647 INFO L470 AbstractCegarLoop]: Abstraction has 9988 states and 42018 transitions. [2021-10-08 15:52:41,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:41,648 INFO L276 IsEmpty]: Start isEmpty. Operand 9988 states and 42018 transitions. [2021-10-08 15:52:41,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 15:52:41,651 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:52:41,651 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:52:41,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-08 15:52:41,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-08 15:52:41,867 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:52:41,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:52:41,870 INFO L82 PathProgramCache]: Analyzing trace with hash 750691271, now seen corresponding path program 1 times [2021-10-08 15:52:41,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:52:41,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163730051] [2021-10-08 15:52:41,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:52:41,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:52:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:52:41,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:41,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:52:41,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163730051] [2021-10-08 15:52:41,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163730051] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:52:41,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049567218] [2021-10-08 15:52:41,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:52:41,929 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:52:41,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:52:41,930 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:52:41,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-08 15:52:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:52:42,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 15:52:42,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:52:42,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:42,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049567218] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:52:42,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:52:42,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 15:52:42,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735335757] [2021-10-08 15:52:42,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 15:52:42,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:52:42,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 15:52:42,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-08 15:52:42,082 INFO L87 Difference]: Start difference. First operand 9988 states and 42018 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:42,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:52:42,629 INFO L93 Difference]: Finished difference Result 31974 states and 130890 transitions. [2021-10-08 15:52:42,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 15:52:42,630 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-08 15:52:42,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:52:43,344 INFO L225 Difference]: With dead ends: 31974 [2021-10-08 15:52:43,344 INFO L226 Difference]: Without dead ends: 31974 [2021-10-08 15:52:43,344 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 24.5ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-08 15:52:43,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31974 states. [2021-10-08 15:52:44,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31974 to 25194. [2021-10-08 15:52:44,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25194 states, 25162 states have (on average 4.341069867260154) internal successors, (109230), 25193 states have internal predecessors, (109230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:45,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25194 states to 25194 states and 109230 transitions. [2021-10-08 15:52:45,174 INFO L78 Accepts]: Start accepts. Automaton has 25194 states and 109230 transitions. Word has length 12 [2021-10-08 15:52:45,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:52:45,175 INFO L470 AbstractCegarLoop]: Abstraction has 25194 states and 109230 transitions. [2021-10-08 15:52:45,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:45,175 INFO L276 IsEmpty]: Start isEmpty. Operand 25194 states and 109230 transitions. [2021-10-08 15:52:45,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 15:52:45,180 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:52:45,181 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:52:45,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-08 15:52:45,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-08 15:52:45,383 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:52:45,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:52:45,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1673814797, now seen corresponding path program 2 times [2021-10-08 15:52:45,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:52:45,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144259951] [2021-10-08 15:52:45,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:52:45,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:52:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:52:45,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:45,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:52:45,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144259951] [2021-10-08 15:52:45,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144259951] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:52:45,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563976660] [2021-10-08 15:52:45,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:52:45,432 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:52:45,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:52:45,433 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:52:45,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-08 15:52:45,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 15:52:45,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:52:45,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 15:52:45,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:52:45,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:45,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563976660] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:52:45,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:52:45,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2021-10-08 15:52:45,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160756025] [2021-10-08 15:52:45,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 15:52:45,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:52:45,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 15:52:45,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-08 15:52:45,571 INFO L87 Difference]: Start difference. First operand 25194 states and 109230 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:46,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:52:46,264 INFO L93 Difference]: Finished difference Result 44422 states and 184356 transitions. [2021-10-08 15:52:46,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 15:52:46,265 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-08 15:52:46,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:52:46,604 INFO L225 Difference]: With dead ends: 44422 [2021-10-08 15:52:46,604 INFO L226 Difference]: Without dead ends: 44208 [2021-10-08 15:52:46,606 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 15.4ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-08 15:52:46,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44208 states. [2021-10-08 15:52:48,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44208 to 32518. [2021-10-08 15:52:48,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32518 states, 32486 states have (on average 4.3491350120051715) internal successors, (141286), 32517 states have internal predecessors, (141286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:48,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32518 states to 32518 states and 141286 transitions. [2021-10-08 15:52:48,778 INFO L78 Accepts]: Start accepts. Automaton has 32518 states and 141286 transitions. Word has length 12 [2021-10-08 15:52:48,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:52:48,779 INFO L470 AbstractCegarLoop]: Abstraction has 32518 states and 141286 transitions. [2021-10-08 15:52:48,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:48,779 INFO L276 IsEmpty]: Start isEmpty. Operand 32518 states and 141286 transitions. [2021-10-08 15:52:48,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 15:52:48,794 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:52:48,795 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2021-10-08 15:52:48,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-10-08 15:52:49,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:52:49,011 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:52:49,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:52:49,012 INFO L82 PathProgramCache]: Analyzing trace with hash -214904169, now seen corresponding path program 5 times [2021-10-08 15:52:49,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:52:49,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50026457] [2021-10-08 15:52:49,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:52:49,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:52:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:52:49,074 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:49,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:52:49,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50026457] [2021-10-08 15:52:49,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50026457] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:52:49,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103403276] [2021-10-08 15:52:49,075 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 15:52:49,076 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:52:49,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:52:49,077 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:52:49,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-08 15:52:49,160 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-08 15:52:49,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:52:49,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 15:52:49,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:52:49,216 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:49,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103403276] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:52:49,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:52:49,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-08 15:52:49,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136336347] [2021-10-08 15:52:49,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 15:52:49,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:52:49,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 15:52:49,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-08 15:52:49,221 INFO L87 Difference]: Start difference. First operand 32518 states and 141286 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:50,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:52:50,222 INFO L93 Difference]: Finished difference Result 53282 states and 226808 transitions. [2021-10-08 15:52:50,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 15:52:50,222 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-08 15:52:50,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:52:50,547 INFO L225 Difference]: With dead ends: 53282 [2021-10-08 15:52:50,547 INFO L226 Difference]: Without dead ends: 53282 [2021-10-08 15:52:50,547 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.5ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-08 15:52:50,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53282 states. [2021-10-08 15:52:52,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53282 to 39464. [2021-10-08 15:52:52,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39464 states, 39432 states have (on average 4.344643944004869) internal successors, (171318), 39463 states have internal predecessors, (171318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:52,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39464 states to 39464 states and 171318 transitions. [2021-10-08 15:52:52,946 INFO L78 Accepts]: Start accepts. Automaton has 39464 states and 171318 transitions. Word has length 14 [2021-10-08 15:52:52,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:52:52,947 INFO L470 AbstractCegarLoop]: Abstraction has 39464 states and 171318 transitions. [2021-10-08 15:52:52,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:52,947 INFO L276 IsEmpty]: Start isEmpty. Operand 39464 states and 171318 transitions. [2021-10-08 15:52:52,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 15:52:52,955 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:52:52,955 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:52:52,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-10-08 15:52:53,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-10-08 15:52:53,169 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:52:53,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:52:53,170 INFO L82 PathProgramCache]: Analyzing trace with hash 2076732434, now seen corresponding path program 3 times [2021-10-08 15:52:53,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:52:53,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316398357] [2021-10-08 15:52:53,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:52:53,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:52:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:52:53,222 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:53,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:52:53,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316398357] [2021-10-08 15:52:53,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316398357] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:52:53,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758829539] [2021-10-08 15:52:53,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 15:52:53,223 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:52:53,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:52:53,224 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:52:53,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-08 15:52:53,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 15:52:53,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:52:53,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 15:52:53,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:52:53,383 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:53,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758829539] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:52:53,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:52:53,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-10-08 15:52:53,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86743917] [2021-10-08 15:52:53,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 15:52:53,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:52:53,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 15:52:53,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-08 15:52:53,386 INFO L87 Difference]: Start difference. First operand 39464 states and 171318 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:54,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:52:54,486 INFO L93 Difference]: Finished difference Result 69146 states and 286918 transitions. [2021-10-08 15:52:54,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 15:52:54,486 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-08 15:52:54,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:52:54,956 INFO L225 Difference]: With dead ends: 69146 [2021-10-08 15:52:54,957 INFO L226 Difference]: Without dead ends: 68888 [2021-10-08 15:52:54,957 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 17.5ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-08 15:52:55,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68888 states. [2021-10-08 15:52:57,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68888 to 47882. [2021-10-08 15:52:57,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47882 states, 47850 states have (on average 4.349174503657262) internal successors, (208108), 47881 states have internal predecessors, (208108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:57,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47882 states to 47882 states and 208108 transitions. [2021-10-08 15:52:57,540 INFO L78 Accepts]: Start accepts. Automaton has 47882 states and 208108 transitions. Word has length 14 [2021-10-08 15:52:57,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:52:57,540 INFO L470 AbstractCegarLoop]: Abstraction has 47882 states and 208108 transitions. [2021-10-08 15:52:57,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:57,541 INFO L276 IsEmpty]: Start isEmpty. Operand 47882 states and 208108 transitions. [2021-10-08 15:52:57,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 15:52:57,552 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:52:57,553 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2021-10-08 15:52:57,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-10-08 15:52:57,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:52:57,768 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:52:57,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:52:57,769 INFO L82 PathProgramCache]: Analyzing trace with hash -364463241, now seen corresponding path program 6 times [2021-10-08 15:52:57,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:52:57,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855326721] [2021-10-08 15:52:57,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:52:57,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:52:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:52:57,831 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:57,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:52:57,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855326721] [2021-10-08 15:52:57,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855326721] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:52:57,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274334293] [2021-10-08 15:52:57,832 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 15:52:57,832 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:52:57,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:52:57,834 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:52:57,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-08 15:52:57,965 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-08 15:52:57,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:52:57,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 15:52:57,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:52:58,017 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:52:58,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274334293] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:52:58,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:52:58,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-08 15:52:58,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398615143] [2021-10-08 15:52:58,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 15:52:58,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:52:58,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 15:52:58,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-08 15:52:58,019 INFO L87 Difference]: Start difference. First operand 47882 states and 208108 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:52:59,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:52:59,260 INFO L93 Difference]: Finished difference Result 75608 states and 323268 transitions. [2021-10-08 15:52:59,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 15:52:59,261 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 15:52:59,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:53:00,343 INFO L225 Difference]: With dead ends: 75608 [2021-10-08 15:53:00,343 INFO L226 Difference]: Without dead ends: 75608 [2021-10-08 15:53:00,343 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.3ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-08 15:53:00,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75608 states. [2021-10-08 15:53:02,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75608 to 56270. [2021-10-08 15:53:02,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56270 states, 56238 states have (on average 4.345780433159074) internal successors, (244398), 56269 states have internal predecessors, (244398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:03,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56270 states to 56270 states and 244398 transitions. [2021-10-08 15:53:03,362 INFO L78 Accepts]: Start accepts. Automaton has 56270 states and 244398 transitions. Word has length 16 [2021-10-08 15:53:03,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:53:03,363 INFO L470 AbstractCegarLoop]: Abstraction has 56270 states and 244398 transitions. [2021-10-08 15:53:03,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:03,363 INFO L276 IsEmpty]: Start isEmpty. Operand 56270 states and 244398 transitions. [2021-10-08 15:53:03,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 15:53:03,379 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:53:03,379 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:53:03,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-08 15:53:03,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-08 15:53:03,593 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:53:03,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:53:03,593 INFO L82 PathProgramCache]: Analyzing trace with hash -109248352, now seen corresponding path program 2 times [2021-10-08 15:53:03,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:53:03,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421567097] [2021-10-08 15:53:03,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:53:03,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:53:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:53:03,698 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 15:53:03,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:53:03,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421567097] [2021-10-08 15:53:03,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421567097] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:53:03,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093260765] [2021-10-08 15:53:03,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:53:03,700 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:53:03,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:53:03,701 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:53:03,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-08 15:53:03,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 15:53:03,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:53:03,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 15:53:03,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:53:03,880 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:53:03,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093260765] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:53:03,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:53:03,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-08 15:53:03,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114676496] [2021-10-08 15:53:03,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 15:53:03,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:53:03,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 15:53:03,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-08 15:53:03,883 INFO L87 Difference]: Start difference. First operand 56270 states and 244398 transitions. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:07,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:53:07,672 INFO L93 Difference]: Finished difference Result 222362 states and 912546 transitions. [2021-10-08 15:53:07,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 15:53:07,676 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 15:53:07,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:53:09,328 INFO L225 Difference]: With dead ends: 222362 [2021-10-08 15:53:09,328 INFO L226 Difference]: Without dead ends: 221330 [2021-10-08 15:53:09,328 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 109.3ms TimeCoverageRelationStatistics Valid=139, Invalid=241, Unknown=0, NotChecked=0, Total=380 [2021-10-08 15:53:10,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221330 states. [2021-10-08 15:53:15,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221330 to 75596. [2021-10-08 15:53:15,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75596 states, 75564 states have (on average 4.419856016092319) internal successors, (333982), 75595 states have internal predecessors, (333982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:16,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75596 states to 75596 states and 333982 transitions. [2021-10-08 15:53:16,531 INFO L78 Accepts]: Start accepts. Automaton has 75596 states and 333982 transitions. Word has length 16 [2021-10-08 15:53:16,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:53:16,531 INFO L470 AbstractCegarLoop]: Abstraction has 75596 states and 333982 transitions. [2021-10-08 15:53:16,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:16,532 INFO L276 IsEmpty]: Start isEmpty. Operand 75596 states and 333982 transitions. [2021-10-08 15:53:16,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 15:53:16,551 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:53:16,551 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:53:16,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-08 15:53:16,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-08 15:53:16,752 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:53:16,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:53:16,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1419907215, now seen corresponding path program 4 times [2021-10-08 15:53:16,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:53:16,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399533235] [2021-10-08 15:53:16,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:53:16,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:53:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:53:16,826 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:53:16,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:53:16,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399533235] [2021-10-08 15:53:16,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399533235] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:53:16,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034275826] [2021-10-08 15:53:16,827 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 15:53:16,827 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:53:16,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:53:16,829 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:53:16,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-08 15:53:16,931 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 15:53:16,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:53:16,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 15:53:16,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:53:16,985 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:53:16,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034275826] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:53:16,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:53:16,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-10-08 15:53:16,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137129225] [2021-10-08 15:53:16,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 15:53:16,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:53:16,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 15:53:16,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-08 15:53:16,987 INFO L87 Difference]: Start difference. First operand 75596 states and 333982 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:19,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:53:19,167 INFO L93 Difference]: Finished difference Result 126444 states and 534906 transitions. [2021-10-08 15:53:19,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 15:53:19,168 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 15:53:19,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:53:20,180 INFO L225 Difference]: With dead ends: 126444 [2021-10-08 15:53:20,185 INFO L226 Difference]: Without dead ends: 126166 [2021-10-08 15:53:20,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 26.8ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-08 15:53:20,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126166 states. [2021-10-08 15:53:24,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126166 to 86784. [2021-10-08 15:53:24,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86784 states, 86752 states have (on average 4.434871818517152) internal successors, (384734), 86783 states have internal predecessors, (384734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:25,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86784 states to 86784 states and 384734 transitions. [2021-10-08 15:53:25,090 INFO L78 Accepts]: Start accepts. Automaton has 86784 states and 384734 transitions. Word has length 16 [2021-10-08 15:53:25,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:53:25,090 INFO L470 AbstractCegarLoop]: Abstraction has 86784 states and 384734 transitions. [2021-10-08 15:53:25,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:25,091 INFO L276 IsEmpty]: Start isEmpty. Operand 86784 states and 384734 transitions. [2021-10-08 15:53:25,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 15:53:25,101 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:53:25,101 INFO L512 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2021-10-08 15:53:25,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-08 15:53:25,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:53:25,310 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:53:25,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:53:25,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1938156631, now seen corresponding path program 7 times [2021-10-08 15:53:25,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:53:25,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609106425] [2021-10-08 15:53:25,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:53:25,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:53:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:53:25,387 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:53:25,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:53:25,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609106425] [2021-10-08 15:53:25,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609106425] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:53:25,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243731091] [2021-10-08 15:53:25,388 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 15:53:25,388 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:53:25,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:53:25,389 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:53:25,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-08 15:53:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:53:25,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 15:53:25,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:53:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:53:25,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243731091] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:53:25,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:53:25,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-08 15:53:25,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842807056] [2021-10-08 15:53:25,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 15:53:25,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:53:25,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 15:53:25,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-08 15:53:25,550 INFO L87 Difference]: Start difference. First operand 86784 states and 384734 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:28,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:53:28,097 INFO L93 Difference]: Finished difference Result 134112 states and 585416 transitions. [2021-10-08 15:53:28,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 15:53:28,097 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 15:53:28,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:53:29,670 INFO L225 Difference]: With dead ends: 134112 [2021-10-08 15:53:29,670 INFO L226 Difference]: Without dead ends: 134112 [2021-10-08 15:53:29,671 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.3ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-08 15:53:29,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134112 states. [2021-10-08 15:53:33,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134112 to 98798. [2021-10-08 15:53:34,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98798 states, 98766 states have (on average 4.420488832189215) internal successors, (436594), 98797 states have internal predecessors, (436594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:35,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98798 states to 98798 states and 436594 transitions. [2021-10-08 15:53:35,615 INFO L78 Accepts]: Start accepts. Automaton has 98798 states and 436594 transitions. Word has length 18 [2021-10-08 15:53:35,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:53:35,619 INFO L470 AbstractCegarLoop]: Abstraction has 98798 states and 436594 transitions. [2021-10-08 15:53:35,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:35,620 INFO L276 IsEmpty]: Start isEmpty. Operand 98798 states and 436594 transitions. [2021-10-08 15:53:35,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 15:53:35,672 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:53:35,672 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:53:35,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-08 15:53:35,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:53:35,885 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:53:35,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:53:35,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1268782864, now seen corresponding path program 5 times [2021-10-08 15:53:35,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:53:35,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806280603] [2021-10-08 15:53:35,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:53:35,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:53:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:53:36,042 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:53:36,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:53:36,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806280603] [2021-10-08 15:53:36,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806280603] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:53:36,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388055407] [2021-10-08 15:53:36,043 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 15:53:36,043 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:53:36,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:53:36,053 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:53:36,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-08 15:53:36,238 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-08 15:53:36,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:53:36,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 15:53:36,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:53:36,303 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:53:36,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388055407] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:53:36,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:53:36,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-10-08 15:53:36,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728680470] [2021-10-08 15:53:36,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 15:53:36,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:53:36,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 15:53:36,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-08 15:53:36,306 INFO L87 Difference]: Start difference. First operand 98798 states and 436594 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:39,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:53:39,925 INFO L93 Difference]: Finished difference Result 164544 states and 695290 transitions. [2021-10-08 15:53:39,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 15:53:39,926 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 15:53:39,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:53:42,076 INFO L225 Difference]: With dead ends: 164544 [2021-10-08 15:53:42,077 INFO L226 Difference]: Without dead ends: 164216 [2021-10-08 15:53:42,077 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 39.2ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-08 15:53:42,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164216 states. [2021-10-08 15:53:48,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164216 to 111590. [2021-10-08 15:53:48,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111590 states, 111558 states have (on average 4.430825220961293) internal successors, (494294), 111589 states have internal predecessors, (494294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:50,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111590 states to 111590 states and 494294 transitions. [2021-10-08 15:53:50,047 INFO L78 Accepts]: Start accepts. Automaton has 111590 states and 494294 transitions. Word has length 18 [2021-10-08 15:53:50,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:53:50,047 INFO L470 AbstractCegarLoop]: Abstraction has 111590 states and 494294 transitions. [2021-10-08 15:53:50,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:50,048 INFO L276 IsEmpty]: Start isEmpty. Operand 111590 states and 494294 transitions. [2021-10-08 15:53:50,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 15:53:50,067 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:53:50,068 INFO L512 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2021-10-08 15:53:50,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-08 15:53:50,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-08 15:53:50,269 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:53:50,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:53:50,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1447271113, now seen corresponding path program 8 times [2021-10-08 15:53:50,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:53:50,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870639095] [2021-10-08 15:53:50,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:53:50,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:53:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:53:50,352 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:53:50,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:53:50,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870639095] [2021-10-08 15:53:50,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870639095] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:53:50,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543893367] [2021-10-08 15:53:50,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:53:50,353 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:53:50,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:53:50,354 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:53:50,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-08 15:53:50,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 15:53:50,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:53:50,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 15:53:50,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:53:50,550 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:53:50,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543893367] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:53:50,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:53:50,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-08 15:53:50,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258851986] [2021-10-08 15:53:50,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 15:53:50,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:53:50,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 15:53:50,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-08 15:53:50,552 INFO L87 Difference]: Start difference. First operand 111590 states and 494294 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:53,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:53:53,255 INFO L93 Difference]: Finished difference Result 169324 states and 740436 transitions. [2021-10-08 15:53:53,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 15:53:53,255 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 15:53:53,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:53:55,090 INFO L225 Difference]: With dead ends: 169324 [2021-10-08 15:53:55,091 INFO L226 Difference]: Without dead ends: 169324 [2021-10-08 15:53:55,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.0ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-08 15:53:55,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169324 states. [2021-10-08 15:54:00,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169324 to 125268. [2021-10-08 15:54:00,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125268 states, 125236 states have (on average 4.418777348366285) internal successors, (553390), 125267 states have internal predecessors, (553390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:54:02,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125268 states to 125268 states and 553390 transitions. [2021-10-08 15:54:02,511 INFO L78 Accepts]: Start accepts. Automaton has 125268 states and 553390 transitions. Word has length 20 [2021-10-08 15:54:02,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:54:02,511 INFO L470 AbstractCegarLoop]: Abstraction has 125268 states and 553390 transitions. [2021-10-08 15:54:02,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:54:02,512 INFO L276 IsEmpty]: Start isEmpty. Operand 125268 states and 553390 transitions. [2021-10-08 15:54:02,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 15:54:02,543 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:54:02,543 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:54:02,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-10-08 15:54:02,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-08 15:54:02,748 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:54:02,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:54:02,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1640910698, now seen corresponding path program 1 times [2021-10-08 15:54:02,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:54:02,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532109797] [2021-10-08 15:54:02,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:54:02,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:54:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:54:02,818 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 15:54:02,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:54:02,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532109797] [2021-10-08 15:54:02,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532109797] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:54:02,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023579868] [2021-10-08 15:54:02,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:54:02,819 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:54:02,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:54:02,821 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:54:02,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-08 15:54:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:54:02,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 15:54:02,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:54:02,991 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 15:54:02,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023579868] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:54:02,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:54:02,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-08 15:54:02,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265170006] [2021-10-08 15:54:02,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 15:54:02,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:54:02,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 15:54:02,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 15:54:02,994 INFO L87 Difference]: Start difference. First operand 125268 states and 553390 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:54:07,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:54:07,013 INFO L93 Difference]: Finished difference Result 248136 states and 1064518 transitions. [2021-10-08 15:54:07,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 15:54:07,014 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 15:54:07,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:54:09,696 INFO L225 Difference]: With dead ends: 248136 [2021-10-08 15:54:09,696 INFO L226 Difference]: Without dead ends: 248136 [2021-10-08 15:54:09,697 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 15:54:10,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248136 states. [2021-10-08 15:54:18,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248136 to 136976. [2021-10-08 15:54:18,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136976 states, 136944 states have (on average 4.392686061455778) internal successors, (601552), 136975 states have internal predecessors, (601552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:54:21,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136976 states to 136976 states and 601552 transitions. [2021-10-08 15:54:21,108 INFO L78 Accepts]: Start accepts. Automaton has 136976 states and 601552 transitions. Word has length 20 [2021-10-08 15:54:21,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:54:21,108 INFO L470 AbstractCegarLoop]: Abstraction has 136976 states and 601552 transitions. [2021-10-08 15:54:21,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:54:21,109 INFO L276 IsEmpty]: Start isEmpty. Operand 136976 states and 601552 transitions. [2021-10-08 15:54:21,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 15:54:21,159 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:54:21,159 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:54:21,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-08 15:54:21,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-08 15:54:21,372 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:54:21,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:54:21,373 INFO L82 PathProgramCache]: Analyzing trace with hash -470363409, now seen corresponding path program 6 times [2021-10-08 15:54:21,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:54:21,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326093250] [2021-10-08 15:54:21,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:54:21,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:54:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:54:21,513 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:54:21,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:54:21,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326093250] [2021-10-08 15:54:21,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326093250] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:54:21,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848428410] [2021-10-08 15:54:21,514 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 15:54:21,514 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:54:21,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:54:21,526 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:54:21,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-08 15:54:21,739 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-08 15:54:21,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:54:21,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 15:54:21,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:54:21,831 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:54:21,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848428410] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:54:21,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:54:21,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2021-10-08 15:54:21,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453617449] [2021-10-08 15:54:21,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 15:54:21,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:54:21,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 15:54:21,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-08 15:54:21,834 INFO L87 Difference]: Start difference. First operand 136976 states and 601552 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:54:27,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:54:27,222 INFO L93 Difference]: Finished difference Result 232096 states and 971232 transitions. [2021-10-08 15:54:27,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 15:54:27,223 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 15:54:27,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:54:30,914 INFO L225 Difference]: With dead ends: 232096 [2021-10-08 15:54:30,915 INFO L226 Difference]: Without dead ends: 231658 [2021-10-08 15:54:30,917 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 37.1ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-08 15:54:31,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231658 states. [2021-10-08 15:54:39,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231658 to 152980. [2021-10-08 15:54:40,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152980 states, 152948 states have (on average 4.395520046028715) internal successors, (672286), 152979 states have internal predecessors, (672286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:54:41,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152980 states to 152980 states and 672286 transitions. [2021-10-08 15:54:41,974 INFO L78 Accepts]: Start accepts. Automaton has 152980 states and 672286 transitions. Word has length 20 [2021-10-08 15:54:41,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:54:41,974 INFO L470 AbstractCegarLoop]: Abstraction has 152980 states and 672286 transitions. [2021-10-08 15:54:41,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:54:41,974 INFO L276 IsEmpty]: Start isEmpty. Operand 152980 states and 672286 transitions. [2021-10-08 15:54:42,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 15:54:42,031 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:54:42,031 INFO L512 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1] [2021-10-08 15:54:42,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-08 15:54:42,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-08 15:54:42,247 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:54:42,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:54:42,248 INFO L82 PathProgramCache]: Analyzing trace with hash 741877271, now seen corresponding path program 9 times [2021-10-08 15:54:42,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:54:42,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415544535] [2021-10-08 15:54:42,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:54:42,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:54:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:54:42,346 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:54:42,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:54:42,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415544535] [2021-10-08 15:54:42,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415544535] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:54:42,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460918498] [2021-10-08 15:54:42,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 15:54:42,348 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:54:42,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:54:42,349 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:54:42,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-08 15:54:42,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-10-08 15:54:42,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:54:42,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 15:54:42,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:54:42,580 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:54:42,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460918498] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:54:42,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:54:42,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-08 15:54:42,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561171828] [2021-10-08 15:54:42,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 15:54:42,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:54:42,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 15:54:42,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:54:42,581 INFO L87 Difference]: Start difference. First operand 152980 states and 672286 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:54:46,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:54:46,716 INFO L93 Difference]: Finished difference Result 237648 states and 1029256 transitions. [2021-10-08 15:54:46,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 15:54:46,716 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 15:54:46,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:54:49,492 INFO L225 Difference]: With dead ends: 237648 [2021-10-08 15:54:49,492 INFO L226 Difference]: Without dead ends: 237648 [2021-10-08 15:54:49,493 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:54:49,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237648 states. [2021-10-08 15:54:59,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237648 to 174304. [2021-10-08 15:54:59,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174304 states, 174272 states have (on average 4.3856500183621) internal successors, (764296), 174303 states have internal predecessors, (764296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:55:03,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174304 states to 174304 states and 764296 transitions. [2021-10-08 15:55:03,029 INFO L78 Accepts]: Start accepts. Automaton has 174304 states and 764296 transitions. Word has length 22 [2021-10-08 15:55:03,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:55:03,029 INFO L470 AbstractCegarLoop]: Abstraction has 174304 states and 764296 transitions. [2021-10-08 15:55:03,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:55:03,030 INFO L276 IsEmpty]: Start isEmpty. Operand 174304 states and 764296 transitions. [2021-10-08 15:55:03,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 15:55:03,092 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:55:03,092 INFO L512 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:55:03,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-08 15:55:03,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:55:03,306 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:55:03,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:55:03,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1047653618, now seen corresponding path program 7 times [2021-10-08 15:55:03,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:55:03,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047848458] [2021-10-08 15:55:03,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:55:03,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:55:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:55:03,483 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:55:03,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:55:03,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047848458] [2021-10-08 15:55:03,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047848458] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:55:03,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968499320] [2021-10-08 15:55:03,483 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 15:55:03,484 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:55:03,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:55:03,493 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:55:03,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-08 15:55:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:55:03,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 15:55:03,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:55:03,698 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:55:03,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968499320] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:55:03,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:55:03,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2021-10-08 15:55:03,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385305199] [2021-10-08 15:55:03,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 15:55:03,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:55:03,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 15:55:03,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:55:03,700 INFO L87 Difference]: Start difference. First operand 174304 states and 764296 transitions. Second operand has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:55:10,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:55:10,109 INFO L93 Difference]: Finished difference Result 294412 states and 1229382 transitions. [2021-10-08 15:55:10,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 15:55:10,110 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 15:55:10,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:55:14,555 INFO L225 Difference]: With dead ends: 294412 [2021-10-08 15:55:14,556 INFO L226 Difference]: Without dead ends: 293904 [2021-10-08 15:55:14,558 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 56.9ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:55:15,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293904 states. [2021-10-08 15:55:27,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293904 to 192530. [2021-10-08 15:55:28,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192530 states, 192498 states have (on average 4.387245581772278) internal successors, (844536), 192529 states have internal predecessors, (844536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:55:30,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192530 states to 192530 states and 844536 transitions. [2021-10-08 15:55:30,933 INFO L78 Accepts]: Start accepts. Automaton has 192530 states and 844536 transitions. Word has length 22 [2021-10-08 15:55:30,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:55:30,935 INFO L470 AbstractCegarLoop]: Abstraction has 192530 states and 844536 transitions. [2021-10-08 15:55:30,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:55:30,936 INFO L276 IsEmpty]: Start isEmpty. Operand 192530 states and 844536 transitions. [2021-10-08 15:55:31,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 15:55:31,011 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:55:31,011 INFO L512 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1] [2021-10-08 15:55:31,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-10-08 15:55:31,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-10-08 15:55:31,227 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:55:31,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:55:31,228 INFO L82 PathProgramCache]: Analyzing trace with hash -20500745, now seen corresponding path program 10 times [2021-10-08 15:55:31,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:55:31,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352778269] [2021-10-08 15:55:31,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:55:31,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:55:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:55:31,344 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:55:31,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:55:31,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352778269] [2021-10-08 15:55:31,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352778269] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:55:31,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259441964] [2021-10-08 15:55:31,348 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 15:55:31,349 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:55:31,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:55:31,354 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:55:31,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-08 15:55:31,516 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 15:55:31,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:55:31,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 15:55:31,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:55:31,589 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:55:31,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259441964] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:55:31,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:55:31,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-08 15:55:31,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669238649] [2021-10-08 15:55:31,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 15:55:31,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:55:31,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 15:55:31,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:55:31,592 INFO L87 Difference]: Start difference. First operand 192530 states and 844536 transitions. Second operand has 13 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:55:37,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:55:37,968 INFO L93 Difference]: Finished difference Result 297970 states and 1290610 transitions. [2021-10-08 15:55:37,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 15:55:37,969 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 15:55:37,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:55:43,036 INFO L225 Difference]: With dead ends: 297970 [2021-10-08 15:55:43,036 INFO L226 Difference]: Without dead ends: 297970 [2021-10-08 15:55:43,036 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.9ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:55:43,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297970 states. [2021-10-08 15:55:57,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297970 to 215908. [2021-10-08 15:55:58,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215908 states, 215876 states have (on average 4.379440048916971) internal successors, (945416), 215907 states have internal predecessors, (945416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:56:01,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215908 states to 215908 states and 945416 transitions. [2021-10-08 15:56:01,425 INFO L78 Accepts]: Start accepts. Automaton has 215908 states and 945416 transitions. Word has length 24 [2021-10-08 15:56:01,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:56:01,427 INFO L470 AbstractCegarLoop]: Abstraction has 215908 states and 945416 transitions. [2021-10-08 15:56:01,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:56:01,427 INFO L276 IsEmpty]: Start isEmpty. Operand 215908 states and 945416 transitions. [2021-10-08 15:56:01,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 15:56:01,498 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:56:01,498 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-08 15:56:01,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-10-08 15:56:01,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-10-08 15:56:01,713 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:56:01,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:56:01,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1411169433, now seen corresponding path program 3 times [2021-10-08 15:56:01,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:56:01,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681757864] [2021-10-08 15:56:01,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:56:01,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:56:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:56:01,792 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 15:56:01,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:56:01,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681757864] [2021-10-08 15:56:01,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681757864] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:56:01,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674338786] [2021-10-08 15:56:01,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 15:56:01,793 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:56:01,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:56:01,794 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:56:01,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-08 15:56:01,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-08 15:56:01,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:56:01,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 15:56:01,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:56:02,081 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 15:56:02,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674338786] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:56:02,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:56:02,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 11 [2021-10-08 15:56:02,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105228331] [2021-10-08 15:56:02,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 15:56:02,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:56:02,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 15:56:02,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:56:02,085 INFO L87 Difference]: Start difference. First operand 215908 states and 945416 transitions. Second operand has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:56:13,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:56:13,376 INFO L93 Difference]: Finished difference Result 644226 states and 2620086 transitions. [2021-10-08 15:56:13,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 15:56:13,377 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 15:56:13,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:56:22,077 INFO L225 Difference]: With dead ends: 644226 [2021-10-08 15:56:22,077 INFO L226 Difference]: Without dead ends: 643422 [2021-10-08 15:56:22,079 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 189.6ms TimeCoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2021-10-08 15:56:23,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643422 states. [2021-10-08 15:56:57,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643422 to 293372. [2021-10-08 15:56:58,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293372 states, 293340 states have (on average 4.449607963455376) internal successors, (1305248), 293371 states have internal predecessors, (1305248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:57:02,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293372 states to 293372 states and 1305248 transitions. [2021-10-08 15:57:02,978 INFO L78 Accepts]: Start accepts. Automaton has 293372 states and 1305248 transitions. Word has length 24 [2021-10-08 15:57:02,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:57:02,978 INFO L470 AbstractCegarLoop]: Abstraction has 293372 states and 1305248 transitions. [2021-10-08 15:57:02,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:57:02,979 INFO L276 IsEmpty]: Start isEmpty. Operand 293372 states and 1305248 transitions. [2021-10-08 15:57:03,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 15:57:03,056 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:57:03,056 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-08 15:57:03,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-08 15:57:03,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:57:03,273 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2021-10-08 15:57:03,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:57:03,275 INFO L82 PathProgramCache]: Analyzing trace with hash 673996604, now seen corresponding path program 1 times [2021-10-08 15:57:03,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:57:03,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633282777] [2021-10-08 15:57:03,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:57:03,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:57:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:57:03,360 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 15:57:03,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:57:03,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633282777] [2021-10-08 15:57:03,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633282777] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:57:03,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278110675] [2021-10-08 15:57:03,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:57:03,362 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:57:03,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:57:03,363 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:57:03,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-08 15:57:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:57:03,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 15:57:03,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:57:03,694 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 15:57:03,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278110675] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:57:03,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 15:57:03,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-08 15:57:03,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249808063] [2021-10-08 15:57:03,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 15:57:03,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:57:03,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 15:57:03,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2021-10-08 15:57:03,697 INFO L87 Difference]: Start difference. First operand 293372 states and 1305248 transitions. Second operand has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:57:32,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:57:32,976 INFO L93 Difference]: Finished difference Result 1040430 states and 4512002 transitions. [2021-10-08 15:57:32,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 15:57:32,977 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 15:57:32,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:57:51,724 INFO L225 Difference]: With dead ends: 1040430 [2021-10-08 15:57:51,724 INFO L226 Difference]: Without dead ends: 1040430 [2021-10-08 15:57:51,725 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 61.0ms TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2021-10-08 15:57:54,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040430 states. [2021-10-08 15:58:55,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040430 to 547778. [2021-10-08 15:58:59,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547778 states, 547746 states have (on average 4.43689228218919) internal successors, (2430290), 547777 states have internal predecessors, (2430290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)