/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-ticket-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 15:57:40,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 15:57:40,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 15:57:40,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 15:57:40,215 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 15:57:40,287 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 15:57:40,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 15:57:40,289 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 15:57:40,289 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 15:57:40,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 15:57:40,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 15:57:40,294 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 15:57:40,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 15:57:40,295 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 15:57:40,295 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 15:57:40,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 15:57:40,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 15:57:40,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 15:57:40,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-08 15:57:40,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 15:57:40,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-08 15:57:40,298 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-08 15:57:40,299 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 15:57:40,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-08 15:57:40,299 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 15:57:40,299 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-08 15:57:40,300 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 15:57:40,300 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 15:57:40,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 15:57:40,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 15:57:40,301 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 15:57:40,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 15:57:40,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-08 15:57:40,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-08 15:57:40,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-08 15:57:40,302 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-08 15:57:40,302 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 15:57:40,303 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 15:57:40,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 15:57:40,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 15:57:40,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 15:57:40,864 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 15:57:40,865 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 15:57:40,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2021-10-08 15:57:40,977 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5314c0dc/8a0dfbccc2b143c49e204a01ff8f46c8/FLAG835d060a9 [2021-10-08 15:57:41,796 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 15:57:41,797 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2021-10-08 15:57:41,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5314c0dc/8a0dfbccc2b143c49e204a01ff8f46c8/FLAG835d060a9 [2021-10-08 15:57:42,150 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5314c0dc/8a0dfbccc2b143c49e204a01ff8f46c8 [2021-10-08 15:57:42,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 15:57:42,165 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-08 15:57:42,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 15:57:42,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 15:57:42,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 15:57:42,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 03:57:42" (1/1) ... [2021-10-08 15:57:42,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f28fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:57:42, skipping insertion in model container [2021-10-08 15:57:42,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 03:57:42" (1/1) ... [2021-10-08 15:57:42,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 15:57:42,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 15:57:42,481 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-ticket-4.wvr.c[2789,2802] [2021-10-08 15:57:42,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 15:57:42,514 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 15:57:42,595 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-ticket-4.wvr.c[2789,2802] [2021-10-08 15:57:42,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 15:57:42,630 INFO L208 MainTranslator]: Completed translation [2021-10-08 15:57:42,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:57:42 WrapperNode [2021-10-08 15:57:42,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 15:57:42,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 15:57:42,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 15:57:42,636 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 15:57:42,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:57:42" (1/1) ... [2021-10-08 15:57:42,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:57:42" (1/1) ... [2021-10-08 15:57:42,764 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 15:57:42,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 15:57:42,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 15:57:42,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 15:57:42,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:57:42" (1/1) ... [2021-10-08 15:57:42,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:57:42" (1/1) ... [2021-10-08 15:57:42,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:57:42" (1/1) ... [2021-10-08 15:57:42,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:57:42" (1/1) ... [2021-10-08 15:57:42,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:57:42" (1/1) ... [2021-10-08 15:57:42,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:57:42" (1/1) ... [2021-10-08 15:57:42,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:57:42" (1/1) ... [2021-10-08 15:57:42,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 15:57:42,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 15:57:42,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 15:57:42,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 15:57:42,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:57:42" (1/1) ... [2021-10-08 15:57:42,873 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 15:57:42,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:57:42,924 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 15:57:42,950 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 15:57:43,019 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 15:57:43,020 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 15:57:43,020 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 15:57:43,020 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 15:57:43,021 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 15:57:43,021 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 15:57:43,022 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-08 15:57:43,022 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-08 15:57:43,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-08 15:57:43,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 15:57:43,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-08 15:57:43,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 15:57:43,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 15:57:43,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 15:57:43,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 15:57:43,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-08 15:57:43,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 15:57:43,025 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 15:57:43,990 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 15:57:43,990 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-08 15:57:43,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 03:57:43 BoogieIcfgContainer [2021-10-08 15:57:43,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 15:57:43,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 15:57:43,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 15:57:44,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 15:57:44,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 03:57:42" (1/3) ... [2021-10-08 15:57:44,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2781fae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 03:57:44, skipping insertion in model container [2021-10-08 15:57:44,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:57:42" (2/3) ... [2021-10-08 15:57:44,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2781fae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 03:57:44, skipping insertion in model container [2021-10-08 15:57:44,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 03:57:43" (3/3) ... [2021-10-08 15:57:44,008 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2021-10-08 15:57:44,021 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-08 15:57:44,021 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 15:57:44,021 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-10-08 15:57:44,021 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 15:57:44,069 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,069 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,070 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,070 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,070 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,070 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,071 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,071 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,071 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,071 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,071 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,072 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,072 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,072 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,072 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,072 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,073 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,073 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,073 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,074 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,074 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,074 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,074 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,075 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,075 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,075 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,075 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,076 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,076 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,076 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,076 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,076 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,077 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,077 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,077 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,077 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,078 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,079 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,079 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,079 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,079 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,079 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,080 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,083 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,083 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,083 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,084 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,084 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,084 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,084 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,084 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,085 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,086 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,086 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,087 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,087 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,087 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,087 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,088 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,088 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,088 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,088 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,088 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,089 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,090 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,090 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,090 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,091 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,091 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,091 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,092 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,092 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,093 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,095 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,095 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,096 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,096 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,096 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,096 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,097 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,097 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,097 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,098 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,098 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,098 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,099 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,099 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,100 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,100 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,101 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,102 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,103 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,107 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,108 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,108 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,108 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,109 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,109 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,109 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,109 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,109 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,110 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,114 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,115 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,115 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,115 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,116 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,116 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,119 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,119 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,120 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,122 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,122 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,122 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,123 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,123 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,123 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,124 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,124 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,124 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,124 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,124 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,125 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,125 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,125 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,125 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,126 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,128 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,128 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,129 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,130 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,130 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,130 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,132 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,132 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,133 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,133 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,133 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,133 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,134 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,135 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,136 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,136 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,136 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,147 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,150 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,150 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,151 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,151 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,151 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,157 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,158 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,159 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,159 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,159 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,159 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,162 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,162 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,168 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,168 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,168 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,168 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,175 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,176 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,176 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,176 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,176 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,177 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:57:44,190 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-08 15:57:44,251 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 15:57:44,261 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 15:57:44,261 INFO L340 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2021-10-08 15:57:44,288 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 15:57:44,304 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 185 transitions, 402 flow [2021-10-08 15:57:44,310 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 185 transitions, 402 flow [2021-10-08 15:57:44,313 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 192 places, 185 transitions, 402 flow [2021-10-08 15:57:44,419 INFO L129 PetriNetUnfolder]: 6/181 cut-off events. [2021-10-08 15:57:44,419 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-08 15:57:44,428 INFO L84 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 181 events. 6/181 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 248 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 135. Up to 2 conditions per place. [2021-10-08 15:57:44,438 INFO L116 LiptonReduction]: Number of co-enabled transitions 6996 [2021-10-08 15:57:52,483 INFO L131 LiptonReduction]: Checked pairs total: 18580 [2021-10-08 15:57:52,483 INFO L133 LiptonReduction]: Total number of compositions: 161 [2021-10-08 15:57:52,498 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 60 transitions, 152 flow [2021-10-08 15:57:54,292 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 26648 states, 26022 states have (on average 4.296441472600107) internal successors, (111802), 26647 states have internal predecessors, (111802), 0 states have call successors, (0), 0 states 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 15:57:54,384 INFO L276 IsEmpty]: Start isEmpty. Operand has 26648 states, 26022 states have (on average 4.296441472600107) internal successors, (111802), 26647 states have internal predecessors, (111802), 0 states have call successors, (0), 0 states 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 15:57:54,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 15:57:54,395 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:57:54,395 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 15:57:54,396 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:57:54,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:57:54,516 INFO L82 PathProgramCache]: Analyzing trace with hash 705625, now seen corresponding path program 1 times [2021-10-08 15:57:54,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:57:54,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962225565] [2021-10-08 15:57:54,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:57:54,580 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:57:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:57:54,908 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 15:57:54,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:57:54,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962225565] [2021-10-08 15:57:54,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962225565] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:57:54,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:57:54,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 15:57:54,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525188251] [2021-10-08 15:57:54,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:57:54,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:57:54,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:57:54,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:57:55,031 INFO L87 Difference]: Start difference. First operand has 26648 states, 26022 states have (on average 4.296441472600107) internal successors, (111802), 26647 states have internal predecessors, (111802), 0 states have call successors, (0), 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 15:57:55,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:57:55,966 INFO L93 Difference]: Finished difference Result 26416 states and 106174 transitions. [2021-10-08 15:57:55,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:57:55,968 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 15:57:55,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:57:56,652 INFO L225 Difference]: With dead ends: 26416 [2021-10-08 15:57:56,653 INFO L226 Difference]: Without dead ends: 26372 [2021-10-08 15:57:56,656 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:57:56,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26372 states. [2021-10-08 15:57:58,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26372 to 26372. [2021-10-08 15:57:58,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26372 states, 25764 states have (on average 4.11411271541686) internal successors, (105996), 26371 states have internal predecessors, (105996), 0 states have call successors, (0), 0 states 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 15:57:59,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26372 states to 26372 states and 105996 transitions. [2021-10-08 15:57:59,544 INFO L78 Accepts]: Start accepts. Automaton has 26372 states and 105996 transitions. Word has length 3 [2021-10-08 15:57:59,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:57:59,545 INFO L470 AbstractCegarLoop]: Abstraction has 26372 states and 105996 transitions. [2021-10-08 15:57:59,545 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 15:57:59,545 INFO L276 IsEmpty]: Start isEmpty. Operand 26372 states and 105996 transitions. [2021-10-08 15:57:59,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 15:57:59,546 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:57:59,546 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 15:57:59,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-08 15:57:59,547 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:57:59,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:57:59,548 INFO L82 PathProgramCache]: Analyzing trace with hash -452863311, now seen corresponding path program 1 times [2021-10-08 15:57:59,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:57:59,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255598136] [2021-10-08 15:57:59,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:57:59,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:57:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:57:59,631 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 15:57:59,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:57:59,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255598136] [2021-10-08 15:57:59,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255598136] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:57:59,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:57:59,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 15:57:59,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913801116] [2021-10-08 15:57:59,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:57:59,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:57:59,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:57:59,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:57:59,636 INFO L87 Difference]: Start difference. First operand 26372 states and 105996 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 15:58:00,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:00,563 INFO L93 Difference]: Finished difference Result 32036 states and 121305 transitions. [2021-10-08 15:58:00,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:58:00,563 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 15:58:00,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:01,260 INFO L225 Difference]: With dead ends: 32036 [2021-10-08 15:58:01,260 INFO L226 Difference]: Without dead ends: 32036 [2021-10-08 15:58:01,261 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:58:01,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32036 states. [2021-10-08 15:58:02,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32036 to 26652. [2021-10-08 15:58:02,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26652 states, 26128 states have (on average 4.0813303735456214) internal successors, (106637), 26651 states have internal predecessors, (106637), 0 states have call successors, (0), 0 states 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 15:58:03,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26652 states to 26652 states and 106637 transitions. [2021-10-08 15:58:03,169 INFO L78 Accepts]: Start accepts. Automaton has 26652 states and 106637 transitions. Word has length 6 [2021-10-08 15:58:03,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:03,171 INFO L470 AbstractCegarLoop]: Abstraction has 26652 states and 106637 transitions. [2021-10-08 15:58:03,171 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 15:58:03,172 INFO L276 IsEmpty]: Start isEmpty. Operand 26652 states and 106637 transitions. [2021-10-08 15:58:03,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 15:58:03,172 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:03,173 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 15:58:03,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-08 15:58:03,173 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:03,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:03,174 INFO L82 PathProgramCache]: Analyzing trace with hash -452863310, now seen corresponding path program 1 times [2021-10-08 15:58:03,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:03,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073514100] [2021-10-08 15:58:03,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:03,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:03,230 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 15:58:03,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:03,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073514100] [2021-10-08 15:58:03,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073514100] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:03,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:03,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 15:58:03,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71993161] [2021-10-08 15:58:03,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:58:03,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:03,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:58:03,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:58:03,239 INFO L87 Difference]: Start difference. First operand 26652 states and 106637 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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 15:58:03,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:03,851 INFO L93 Difference]: Finished difference Result 17346 states and 68746 transitions. [2021-10-08 15:58:03,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:58:03,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 15:58:03,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:04,018 INFO L225 Difference]: With dead ends: 17346 [2021-10-08 15:58:04,019 INFO L226 Difference]: Without dead ends: 17346 [2021-10-08 15:58:04,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:58:04,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17346 states. [2021-10-08 15:58:05,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17346 to 17346. [2021-10-08 15:58:05,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17346 states, 17104 states have (on average 4.019293732460243) internal successors, (68746), 17345 states have internal predecessors, (68746), 0 states have call successors, (0), 0 states 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 15:58:05,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17346 states to 17346 states and 68746 transitions. [2021-10-08 15:58:05,252 INFO L78 Accepts]: Start accepts. Automaton has 17346 states and 68746 transitions. Word has length 6 [2021-10-08 15:58:05,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:05,253 INFO L470 AbstractCegarLoop]: Abstraction has 17346 states and 68746 transitions. [2021-10-08 15:58:05,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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 15:58:05,254 INFO L276 IsEmpty]: Start isEmpty. Operand 17346 states and 68746 transitions. [2021-10-08 15:58:05,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 15:58:05,255 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:05,255 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:05,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-08 15:58:05,256 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:05,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:05,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1155001178, now seen corresponding path program 1 times [2021-10-08 15:58:05,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:05,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614953860] [2021-10-08 15:58:05,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:05,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:05,361 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 15:58:05,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:05,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614953860] [2021-10-08 15:58:05,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614953860] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:05,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:05,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 15:58:05,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755286276] [2021-10-08 15:58:05,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 15:58:05,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:05,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 15:58:05,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:58:05,365 INFO L87 Difference]: Start difference. First operand 17346 states and 68746 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:06,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:06,076 INFO L93 Difference]: Finished difference Result 21798 states and 81905 transitions. [2021-10-08 15:58:06,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 15:58:06,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 15:58:06,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:06,232 INFO L225 Difference]: With dead ends: 21798 [2021-10-08 15:58:06,232 INFO L226 Difference]: Without dead ends: 21798 [2021-10-08 15:58:06,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.0ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 15:58:06,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21798 states. [2021-10-08 15:58:07,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21798 to 16390. [2021-10-08 15:58:07,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16390 states, 16209 states have (on average 3.727682151890925) internal successors, (60422), 16389 states have internal predecessors, (60422), 0 states have call successors, (0), 0 states 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 15:58:07,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16390 states to 16390 states and 60422 transitions. [2021-10-08 15:58:07,557 INFO L78 Accepts]: Start accepts. Automaton has 16390 states and 60422 transitions. Word has length 7 [2021-10-08 15:58:07,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:07,558 INFO L470 AbstractCegarLoop]: Abstraction has 16390 states and 60422 transitions. [2021-10-08 15:58:07,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:07,558 INFO L276 IsEmpty]: Start isEmpty. Operand 16390 states and 60422 transitions. [2021-10-08 15:58:07,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 15:58:07,561 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:07,561 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:07,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-08 15:58:07,563 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:07,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:07,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1155001133, now seen corresponding path program 1 times [2021-10-08 15:58:07,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:07,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749571394] [2021-10-08 15:58:07,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:07,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:07,702 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 15:58:07,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:07,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749571394] [2021-10-08 15:58:07,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749571394] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:07,703 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:07,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 15:58:07,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904135982] [2021-10-08 15:58:07,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 15:58:07,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:07,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 15:58:07,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:58:07,705 INFO L87 Difference]: Start difference. First operand 16390 states and 60422 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:07,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:07,997 INFO L93 Difference]: Finished difference Result 14700 states and 53689 transitions. [2021-10-08 15:58:07,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 15:58:07,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 15:58:07,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:08,120 INFO L225 Difference]: With dead ends: 14700 [2021-10-08 15:58:08,120 INFO L226 Difference]: Without dead ends: 14700 [2021-10-08 15:58:08,121 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.8ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 15:58:08,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14700 states. [2021-10-08 15:58:08,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14700 to 11932. [2021-10-08 15:58:08,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11932 states, 11829 states have (on average 3.597514582804971) internal successors, (42555), 11931 states have internal predecessors, (42555), 0 states have call successors, (0), 0 states 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 15:58:08,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11932 states to 11932 states and 42555 transitions. [2021-10-08 15:58:08,999 INFO L78 Accepts]: Start accepts. Automaton has 11932 states and 42555 transitions. Word has length 7 [2021-10-08 15:58:09,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:09,000 INFO L470 AbstractCegarLoop]: Abstraction has 11932 states and 42555 transitions. [2021-10-08 15:58:09,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:09,001 INFO L276 IsEmpty]: Start isEmpty. Operand 11932 states and 42555 transitions. [2021-10-08 15:58:09,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 15:58:09,003 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:09,003 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:09,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-08 15:58:09,004 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:09,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:09,006 INFO L82 PathProgramCache]: Analyzing trace with hash -757918546, now seen corresponding path program 1 times [2021-10-08 15:58:09,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:09,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596925663] [2021-10-08 15:58:09,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:09,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:09,112 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 15:58:09,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:09,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596925663] [2021-10-08 15:58:09,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596925663] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:09,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:09,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 15:58:09,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028471986] [2021-10-08 15:58:09,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 15:58:09,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:09,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 15:58:09,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:58:09,116 INFO L87 Difference]: Start difference. First operand 11932 states and 42555 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:09,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:09,258 INFO L93 Difference]: Finished difference Result 10412 states and 36512 transitions. [2021-10-08 15:58:09,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 15:58:09,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-08 15:58:09,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:09,318 INFO L225 Difference]: With dead ends: 10412 [2021-10-08 15:58:09,318 INFO L226 Difference]: Without dead ends: 10412 [2021-10-08 15:58:09,319 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.5ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:58:09,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10412 states. [2021-10-08 15:58:09,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10412 to 10412. [2021-10-08 15:58:09,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10412 states, 10333 states have (on average 3.5335333397851545) internal successors, (36512), 10411 states have internal predecessors, (36512), 0 states have call successors, (0), 0 states 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 15:58:09,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10412 states to 10412 states and 36512 transitions. [2021-10-08 15:58:09,969 INFO L78 Accepts]: Start accepts. Automaton has 10412 states and 36512 transitions. Word has length 9 [2021-10-08 15:58:09,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:09,969 INFO L470 AbstractCegarLoop]: Abstraction has 10412 states and 36512 transitions. [2021-10-08 15:58:09,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:09,970 INFO L276 IsEmpty]: Start isEmpty. Operand 10412 states and 36512 transitions. [2021-10-08 15:58:09,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 15:58:09,974 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:09,974 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:09,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-08 15:58:09,975 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:09,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:09,975 INFO L82 PathProgramCache]: Analyzing trace with hash -502753546, now seen corresponding path program 1 times [2021-10-08 15:58:09,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:09,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745902028] [2021-10-08 15:58:09,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:09,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:10,078 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 15:58:10,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:10,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745902028] [2021-10-08 15:58:10,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745902028] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:10,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:10,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-08 15:58:10,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246804581] [2021-10-08 15:58:10,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 15:58:10,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:10,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 15:58:10,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 15:58:10,084 INFO L87 Difference]: Start difference. First operand 10412 states and 36512 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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 15:58:10,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:10,234 INFO L93 Difference]: Finished difference Result 8298 states and 28347 transitions. [2021-10-08 15:58:10,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 15:58:10,235 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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 15:58:10,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:10,280 INFO L225 Difference]: With dead ends: 8298 [2021-10-08 15:58:10,280 INFO L226 Difference]: Without dead ends: 8298 [2021-10-08 15:58:10,281 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.6ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 15:58:10,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8298 states. [2021-10-08 15:58:10,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8298 to 8298. [2021-10-08 15:58:10,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8298 states, 8263 states have (on average 3.430594215176086) internal successors, (28347), 8297 states have internal predecessors, (28347), 0 states have call successors, (0), 0 states 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 15:58:10,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8298 states to 8298 states and 28347 transitions. [2021-10-08 15:58:10,950 INFO L78 Accepts]: Start accepts. Automaton has 8298 states and 28347 transitions. Word has length 12 [2021-10-08 15:58:10,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:10,951 INFO L470 AbstractCegarLoop]: Abstraction has 8298 states and 28347 transitions. [2021-10-08 15:58:10,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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 15:58:10,952 INFO L276 IsEmpty]: Start isEmpty. Operand 8298 states and 28347 transitions. [2021-10-08 15:58:10,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 15:58:10,964 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:10,964 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:10,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-08 15:58:10,965 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:10,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:10,971 INFO L82 PathProgramCache]: Analyzing trace with hash -789572342, now seen corresponding path program 1 times [2021-10-08 15:58:10,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:10,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615149777] [2021-10-08 15:58:10,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:10,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:11,152 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 15:58:11,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:11,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615149777] [2021-10-08 15:58:11,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615149777] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:11,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:11,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-08 15:58:11,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173589368] [2021-10-08 15:58:11,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 15:58:11,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:11,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 15:58:11,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-08 15:58:11,157 INFO L87 Difference]: Start difference. First operand 8298 states and 28347 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 15:58:11,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:11,710 INFO L93 Difference]: Finished difference Result 10450 states and 36083 transitions. [2021-10-08 15:58:11,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 15:58:11,711 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 15:58:11,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:11,784 INFO L225 Difference]: With dead ends: 10450 [2021-10-08 15:58:11,785 INFO L226 Difference]: Without dead ends: 10450 [2021-10-08 15:58:11,785 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 88.7ms TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-10-08 15:58:11,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10450 states. [2021-10-08 15:58:12,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10450 to 8380. [2021-10-08 15:58:12,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8380 states, 8346 states have (on average 3.3841361131080756) internal successors, (28244), 8379 states have internal predecessors, (28244), 0 states have call successors, (0), 0 states 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 15:58:12,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8380 states to 8380 states and 28244 transitions. [2021-10-08 15:58:12,157 INFO L78 Accepts]: Start accepts. Automaton has 8380 states and 28244 transitions. Word has length 14 [2021-10-08 15:58:12,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:12,158 INFO L470 AbstractCegarLoop]: Abstraction has 8380 states and 28244 transitions. [2021-10-08 15:58:12,158 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 15:58:12,159 INFO L276 IsEmpty]: Start isEmpty. Operand 8380 states and 28244 transitions. [2021-10-08 15:58:12,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 15:58:12,162 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:12,162 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:12,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-08 15:58:12,162 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:12,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:12,163 INFO L82 PathProgramCache]: Analyzing trace with hash -789572297, now seen corresponding path program 1 times [2021-10-08 15:58:12,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:12,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010682783] [2021-10-08 15:58:12,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:12,164 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:12,206 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 15:58:12,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:12,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010682783] [2021-10-08 15:58:12,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010682783] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:12,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:12,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 15:58:12,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108518013] [2021-10-08 15:58:12,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:58:12,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:12,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:58:12,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:58:12,210 INFO L87 Difference]: Start difference. First operand 8380 states and 28244 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 15:58:12,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:12,406 INFO L93 Difference]: Finished difference Result 8438 states and 27964 transitions. [2021-10-08 15:58:12,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 15:58:12,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 15:58:12,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:12,472 INFO L225 Difference]: With dead ends: 8438 [2021-10-08 15:58:12,472 INFO L226 Difference]: Without dead ends: 8370 [2021-10-08 15:58:12,473 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:58:12,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8370 states. [2021-10-08 15:58:13,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8370 to 7836. [2021-10-08 15:58:13,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7836 states, 7812 states have (on average 3.4097542242703534) internal successors, (26637), 7835 states have internal predecessors, (26637), 0 states have call successors, (0), 0 states 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 15:58:13,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7836 states to 7836 states and 26637 transitions. [2021-10-08 15:58:13,112 INFO L78 Accepts]: Start accepts. Automaton has 7836 states and 26637 transitions. Word has length 14 [2021-10-08 15:58:13,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:13,113 INFO L470 AbstractCegarLoop]: Abstraction has 7836 states and 26637 transitions. [2021-10-08 15:58:13,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 15:58:13,113 INFO L276 IsEmpty]: Start isEmpty. Operand 7836 states and 26637 transitions. [2021-10-08 15:58:13,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 15:58:13,116 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:13,116 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:13,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-08 15:58:13,117 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:13,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:13,117 INFO L82 PathProgramCache]: Analyzing trace with hash -974861369, now seen corresponding path program 1 times [2021-10-08 15:58:13,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:13,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843656318] [2021-10-08 15:58:13,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:13,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:13,156 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 15:58:13,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:13,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843656318] [2021-10-08 15:58:13,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843656318] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:13,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:13,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 15:58:13,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599253035] [2021-10-08 15:58:13,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:58:13,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:13,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:58:13,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:58:13,159 INFO L87 Difference]: Start difference. First operand 7836 states and 26637 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 15:58:13,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:13,288 INFO L93 Difference]: Finished difference Result 7474 states and 25065 transitions. [2021-10-08 15:58:13,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 15:58:13,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 15:58:13,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:13,330 INFO L225 Difference]: With dead ends: 7474 [2021-10-08 15:58:13,330 INFO L226 Difference]: Without dead ends: 7474 [2021-10-08 15:58:13,331 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:58:13,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7474 states. [2021-10-08 15:58:13,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7474 to 6492. [2021-10-08 15:58:13,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6492 states, 6479 states have (on average 3.49776200030869) internal successors, (22662), 6491 states have internal predecessors, (22662), 0 states have call successors, (0), 0 states 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 15:58:13,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6492 states to 6492 states and 22662 transitions. [2021-10-08 15:58:13,580 INFO L78 Accepts]: Start accepts. Automaton has 6492 states and 22662 transitions. Word has length 14 [2021-10-08 15:58:13,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:13,580 INFO L470 AbstractCegarLoop]: Abstraction has 6492 states and 22662 transitions. [2021-10-08 15:58:13,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 15:58:13,581 INFO L276 IsEmpty]: Start isEmpty. Operand 6492 states and 22662 transitions. [2021-10-08 15:58:13,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 15:58:13,585 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:13,585 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:13,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-08 15:58:13,586 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:13,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:13,587 INFO L82 PathProgramCache]: Analyzing trace with hash -974861413, now seen corresponding path program 1 times [2021-10-08 15:58:13,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:13,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725577569] [2021-10-08 15:58:13,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:13,588 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:13,688 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 15:58:13,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:13,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725577569] [2021-10-08 15:58:13,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725577569] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:13,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:13,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-08 15:58:13,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295332903] [2021-10-08 15:58:13,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 15:58:13,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:13,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 15:58:13,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-08 15:58:13,691 INFO L87 Difference]: Start difference. First operand 6492 states and 22662 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 15:58:14,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:14,090 INFO L93 Difference]: Finished difference Result 8452 states and 29931 transitions. [2021-10-08 15:58:14,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 15:58:14,091 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 15:58:14,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:14,138 INFO L225 Difference]: With dead ends: 8452 [2021-10-08 15:58:14,138 INFO L226 Difference]: Without dead ends: 8326 [2021-10-08 15:58:14,139 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 75.5ms TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:58:14,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8326 states. [2021-10-08 15:58:14,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8326 to 6090. [2021-10-08 15:58:14,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6090 states, 6078 states have (on average 3.451628825271471) internal successors, (20979), 6089 states have internal predecessors, (20979), 0 states have call successors, (0), 0 states 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 15:58:14,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6090 states to 6090 states and 20979 transitions. [2021-10-08 15:58:14,524 INFO L78 Accepts]: Start accepts. Automaton has 6090 states and 20979 transitions. Word has length 14 [2021-10-08 15:58:14,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:14,525 INFO L470 AbstractCegarLoop]: Abstraction has 6090 states and 20979 transitions. [2021-10-08 15:58:14,525 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 15:58:14,525 INFO L276 IsEmpty]: Start isEmpty. Operand 6090 states and 20979 transitions. [2021-10-08 15:58:14,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 15:58:14,530 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:14,530 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:14,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-08 15:58:14,531 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:14,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:14,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1233727079, now seen corresponding path program 1 times [2021-10-08 15:58:14,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:14,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802600217] [2021-10-08 15:58:14,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:14,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:14,633 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 15:58:14,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:14,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802600217] [2021-10-08 15:58:14,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802600217] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:14,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:14,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-08 15:58:14,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712519106] [2021-10-08 15:58:14,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 15:58:14,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:14,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 15:58:14,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-08 15:58:14,636 INFO L87 Difference]: Start difference. First operand 6090 states and 20979 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:15,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:15,036 INFO L93 Difference]: Finished difference Result 8290 states and 29228 transitions. [2021-10-08 15:58:15,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 15:58:15,036 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 15:58:15,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:15,067 INFO L225 Difference]: With dead ends: 8290 [2021-10-08 15:58:15,067 INFO L226 Difference]: Without dead ends: 8074 [2021-10-08 15:58:15,068 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 71.1ms TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:58:15,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8074 states. [2021-10-08 15:58:15,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8074 to 5978. [2021-10-08 15:58:15,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5978 states, 5967 states have (on average 3.4424333836098544) internal successors, (20541), 5977 states have internal predecessors, (20541), 0 states have call successors, (0), 0 states 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 15:58:15,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 20541 transitions. [2021-10-08 15:58:15,364 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 20541 transitions. Word has length 15 [2021-10-08 15:58:15,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:15,365 INFO L470 AbstractCegarLoop]: Abstraction has 5978 states and 20541 transitions. [2021-10-08 15:58:15,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:15,365 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 20541 transitions. [2021-10-08 15:58:15,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 15:58:15,375 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:15,376 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:15,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-08 15:58:15,376 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:15,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:15,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1355512607, now seen corresponding path program 1 times [2021-10-08 15:58:15,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:15,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640709548] [2021-10-08 15:58:15,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:15,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:15,513 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 15:58:15,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:15,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640709548] [2021-10-08 15:58:15,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640709548] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:15,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:15,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-08 15:58:15,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514312602] [2021-10-08 15:58:15,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 15:58:15,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:15,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 15:58:15,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 15:58:15,518 INFO L87 Difference]: Start difference. First operand 5978 states and 20541 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:15,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:15,931 INFO L93 Difference]: Finished difference Result 8052 states and 28376 transitions. [2021-10-08 15:58:15,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 15:58:15,932 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 15:58:15,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:15,969 INFO L225 Difference]: With dead ends: 8052 [2021-10-08 15:58:15,970 INFO L226 Difference]: Without dead ends: 7740 [2021-10-08 15:58:15,970 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 71.3ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:58:15,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7740 states. [2021-10-08 15:58:16,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7740 to 5864. [2021-10-08 15:58:16,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5864 states, 5854 states have (on average 3.45097369320123) internal successors, (20202), 5863 states have internal predecessors, (20202), 0 states have call successors, (0), 0 states 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 15:58:16,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5864 states to 5864 states and 20202 transitions. [2021-10-08 15:58:16,291 INFO L78 Accepts]: Start accepts. Automaton has 5864 states and 20202 transitions. Word has length 17 [2021-10-08 15:58:16,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:16,292 INFO L470 AbstractCegarLoop]: Abstraction has 5864 states and 20202 transitions. [2021-10-08 15:58:16,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:16,292 INFO L276 IsEmpty]: Start isEmpty. Operand 5864 states and 20202 transitions. [2021-10-08 15:58:16,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 15:58:16,312 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:16,312 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:16,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-08 15:58:16,313 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:16,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:16,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1812632362, now seen corresponding path program 1 times [2021-10-08 15:58:16,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:16,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598574837] [2021-10-08 15:58:16,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:16,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:16,476 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 15:58:16,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:16,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598574837] [2021-10-08 15:58:16,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598574837] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:16,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:16,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-08 15:58:16,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291726681] [2021-10-08 15:58:16,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 15:58:16,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:16,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 15:58:16,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-08 15:58:16,480 INFO L87 Difference]: Start difference. First operand 5864 states and 20202 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:17,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:17,352 INFO L93 Difference]: Finished difference Result 10376 states and 35765 transitions. [2021-10-08 15:58:17,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 15:58:17,353 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 15:58:17,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:17,410 INFO L225 Difference]: With dead ends: 10376 [2021-10-08 15:58:17,411 INFO L226 Difference]: Without dead ends: 10220 [2021-10-08 15:58:17,411 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 234.6ms TimeCoverageRelationStatistics Valid=190, Invalid=460, Unknown=0, NotChecked=0, Total=650 [2021-10-08 15:58:17,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10220 states. [2021-10-08 15:58:17,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10220 to 6736. [2021-10-08 15:58:17,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6736 states, 6726 states have (on average 3.436068986024383) internal successors, (23111), 6735 states have internal predecessors, (23111), 0 states have call successors, (0), 0 states 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 15:58:17,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6736 states to 6736 states and 23111 transitions. [2021-10-08 15:58:17,674 INFO L78 Accepts]: Start accepts. Automaton has 6736 states and 23111 transitions. Word has length 21 [2021-10-08 15:58:17,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:17,674 INFO L470 AbstractCegarLoop]: Abstraction has 6736 states and 23111 transitions. [2021-10-08 15:58:17,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:17,675 INFO L276 IsEmpty]: Start isEmpty. Operand 6736 states and 23111 transitions. [2021-10-08 15:58:17,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 15:58:17,690 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:17,690 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:17,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-08 15:58:17,690 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:17,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:17,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1808651300, now seen corresponding path program 1 times [2021-10-08 15:58:17,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:17,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936032589] [2021-10-08 15:58:17,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:17,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:17,801 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 15:58:17,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:17,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936032589] [2021-10-08 15:58:17,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936032589] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:17,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:17,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-08 15:58:17,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511262992] [2021-10-08 15:58:17,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 15:58:17,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:17,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 15:58:17,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-08 15:58:17,804 INFO L87 Difference]: Start difference. First operand 6736 states and 23111 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:18,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:18,665 INFO L93 Difference]: Finished difference Result 10498 states and 36031 transitions. [2021-10-08 15:58:18,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 15:58:18,666 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 15:58:18,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:18,703 INFO L225 Difference]: With dead ends: 10498 [2021-10-08 15:58:18,703 INFO L226 Difference]: Without dead ends: 10296 [2021-10-08 15:58:18,704 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 230.2ms TimeCoverageRelationStatistics Valid=190, Invalid=460, Unknown=0, NotChecked=0, Total=650 [2021-10-08 15:58:18,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10296 states. [2021-10-08 15:58:18,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10296 to 6994. [2021-10-08 15:58:18,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6994 states, 6984 states have (on average 3.4262600229095073) internal successors, (23929), 6993 states have internal predecessors, (23929), 0 states have call successors, (0), 0 states 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 15:58:19,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6994 states to 6994 states and 23929 transitions. [2021-10-08 15:58:19,003 INFO L78 Accepts]: Start accepts. Automaton has 6994 states and 23929 transitions. Word has length 21 [2021-10-08 15:58:19,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:19,003 INFO L470 AbstractCegarLoop]: Abstraction has 6994 states and 23929 transitions. [2021-10-08 15:58:19,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:19,004 INFO L276 IsEmpty]: Start isEmpty. Operand 6994 states and 23929 transitions. [2021-10-08 15:58:19,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 15:58:19,018 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:19,018 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:19,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-08 15:58:19,018 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:19,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:19,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1478049590, now seen corresponding path program 2 times [2021-10-08 15:58:19,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:19,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047930144] [2021-10-08 15:58:19,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:19,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:19,126 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 15:58:19,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:19,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047930144] [2021-10-08 15:58:19,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047930144] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:19,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:19,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-08 15:58:19,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437919304] [2021-10-08 15:58:19,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 15:58:19,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:19,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 15:58:19,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-08 15:58:19,130 INFO L87 Difference]: Start difference. First operand 6994 states and 23929 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:19,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:19,984 INFO L93 Difference]: Finished difference Result 13776 states and 46140 transitions. [2021-10-08 15:58:19,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 15:58:19,985 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 15:58:19,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:20,059 INFO L225 Difference]: With dead ends: 13776 [2021-10-08 15:58:20,059 INFO L226 Difference]: Without dead ends: 13610 [2021-10-08 15:58:20,060 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 250.7ms TimeCoverageRelationStatistics Valid=231, Invalid=581, Unknown=0, NotChecked=0, Total=812 [2021-10-08 15:58:20,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13610 states. [2021-10-08 15:58:20,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13610 to 7344. [2021-10-08 15:58:20,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7344 states, 7334 states have (on average 3.4098718298336514) internal successors, (25008), 7343 states have internal predecessors, (25008), 0 states have call successors, (0), 0 states 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 15:58:20,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7344 states to 7344 states and 25008 transitions. [2021-10-08 15:58:20,524 INFO L78 Accepts]: Start accepts. Automaton has 7344 states and 25008 transitions. Word has length 21 [2021-10-08 15:58:20,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:20,524 INFO L470 AbstractCegarLoop]: Abstraction has 7344 states and 25008 transitions. [2021-10-08 15:58:20,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:20,525 INFO L276 IsEmpty]: Start isEmpty. Operand 7344 states and 25008 transitions. [2021-10-08 15:58:20,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 15:58:20,544 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:20,544 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:20,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-08 15:58:20,544 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:20,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:20,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1599596870, now seen corresponding path program 3 times [2021-10-08 15:58:20,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:20,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745805983] [2021-10-08 15:58:20,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:20,546 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:20,659 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 15:58:20,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:20,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745805983] [2021-10-08 15:58:20,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745805983] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:20,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:20,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-08 15:58:20,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901344210] [2021-10-08 15:58:20,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 15:58:20,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:20,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 15:58:20,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-08 15:58:20,662 INFO L87 Difference]: Start difference. First operand 7344 states and 25008 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:21,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:21,733 INFO L93 Difference]: Finished difference Result 12102 states and 41891 transitions. [2021-10-08 15:58:21,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 15:58:21,733 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 15:58:21,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:21,798 INFO L225 Difference]: With dead ends: 12102 [2021-10-08 15:58:21,799 INFO L226 Difference]: Without dead ends: 11954 [2021-10-08 15:58:21,800 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 341.7ms TimeCoverageRelationStatistics Valid=286, Invalid=770, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 15:58:21,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11954 states. [2021-10-08 15:58:22,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11954 to 7212. [2021-10-08 15:58:22,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7212 states, 7202 states have (on average 3.418911413496251) internal successors, (24623), 7211 states have internal predecessors, (24623), 0 states have call successors, (0), 0 states 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 15:58:22,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7212 states to 7212 states and 24623 transitions. [2021-10-08 15:58:22,196 INFO L78 Accepts]: Start accepts. Automaton has 7212 states and 24623 transitions. Word has length 21 [2021-10-08 15:58:22,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:22,196 INFO L470 AbstractCegarLoop]: Abstraction has 7212 states and 24623 transitions. [2021-10-08 15:58:22,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:22,197 INFO L276 IsEmpty]: Start isEmpty. Operand 7212 states and 24623 transitions. [2021-10-08 15:58:22,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 15:58:22,218 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:22,219 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:22,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-08 15:58:22,219 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:22,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:22,220 INFO L82 PathProgramCache]: Analyzing trace with hash -26215318, now seen corresponding path program 2 times [2021-10-08 15:58:22,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:22,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729878075] [2021-10-08 15:58:22,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:22,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:22,356 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 15:58:22,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:22,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729878075] [2021-10-08 15:58:22,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729878075] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:22,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:22,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 15:58:22,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211512425] [2021-10-08 15:58:22,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 15:58:22,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:22,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 15:58:22,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-08 15:58:22,361 INFO L87 Difference]: Start difference. First operand 7212 states and 24623 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:23,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:23,376 INFO L93 Difference]: Finished difference Result 12096 states and 41573 transitions. [2021-10-08 15:58:23,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 15:58:23,377 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 15:58:23,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:23,421 INFO L225 Difference]: With dead ends: 12096 [2021-10-08 15:58:23,421 INFO L226 Difference]: Without dead ends: 11894 [2021-10-08 15:58:23,422 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 325.4ms TimeCoverageRelationStatistics Valid=292, Invalid=764, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 15:58:23,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11894 states. [2021-10-08 15:58:23,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11894 to 7716. [2021-10-08 15:58:23,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7716 states, 7706 states have (on average 3.436542953542694) internal successors, (26482), 7715 states have internal predecessors, (26482), 0 states have call successors, (0), 0 states 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 15:58:23,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7716 states to 7716 states and 26482 transitions. [2021-10-08 15:58:23,831 INFO L78 Accepts]: Start accepts. Automaton has 7716 states and 26482 transitions. Word has length 21 [2021-10-08 15:58:23,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:23,831 INFO L470 AbstractCegarLoop]: Abstraction has 7716 states and 26482 transitions. [2021-10-08 15:58:23,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:23,832 INFO L276 IsEmpty]: Start isEmpty. Operand 7716 states and 26482 transitions. [2021-10-08 15:58:23,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 15:58:23,850 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:23,850 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:23,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-08 15:58:23,851 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:23,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:23,851 INFO L82 PathProgramCache]: Analyzing trace with hash -30196380, now seen corresponding path program 4 times [2021-10-08 15:58:23,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:23,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904583992] [2021-10-08 15:58:23,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:23,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:23,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:23,981 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 15:58:23,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:23,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904583992] [2021-10-08 15:58:23,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904583992] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:23,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:23,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 15:58:23,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712246325] [2021-10-08 15:58:23,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 15:58:23,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:23,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 15:58:23,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-08 15:58:23,984 INFO L87 Difference]: Start difference. First operand 7716 states and 26482 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:25,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:25,039 INFO L93 Difference]: Finished difference Result 12084 states and 41454 transitions. [2021-10-08 15:58:25,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 15:58:25,039 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 15:58:25,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:25,084 INFO L225 Difference]: With dead ends: 12084 [2021-10-08 15:58:25,084 INFO L226 Difference]: Without dead ends: 11946 [2021-10-08 15:58:25,085 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 352.9ms TimeCoverageRelationStatistics Valid=309, Invalid=813, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 15:58:25,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11946 states. [2021-10-08 15:58:25,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11946 to 7566. [2021-10-08 15:58:25,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7566 states, 7556 states have (on average 3.4444150344097406) internal successors, (26026), 7565 states have internal predecessors, (26026), 0 states have call successors, (0), 0 states 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 15:58:25,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7566 states to 7566 states and 26026 transitions. [2021-10-08 15:58:25,339 INFO L78 Accepts]: Start accepts. Automaton has 7566 states and 26026 transitions. Word has length 21 [2021-10-08 15:58:25,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:25,340 INFO L470 AbstractCegarLoop]: Abstraction has 7566 states and 26026 transitions. [2021-10-08 15:58:25,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:25,340 INFO L276 IsEmpty]: Start isEmpty. Operand 7566 states and 26026 transitions. [2021-10-08 15:58:25,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 15:58:25,354 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:25,354 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:25,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-08 15:58:25,355 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:25,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:25,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1754512406, now seen corresponding path program 3 times [2021-10-08 15:58:25,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:25,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564027754] [2021-10-08 15:58:25,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:25,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:25,473 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 15:58:25,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:25,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564027754] [2021-10-08 15:58:25,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564027754] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:25,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:25,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 15:58:25,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016130958] [2021-10-08 15:58:25,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 15:58:25,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:25,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 15:58:25,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-08 15:58:25,477 INFO L87 Difference]: Start difference. First operand 7566 states and 26026 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:26,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:26,429 INFO L93 Difference]: Finished difference Result 10144 states and 35392 transitions. [2021-10-08 15:58:26,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 15:58:26,430 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 15:58:26,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:26,472 INFO L225 Difference]: With dead ends: 10144 [2021-10-08 15:58:26,472 INFO L226 Difference]: Without dead ends: 9982 [2021-10-08 15:58:26,473 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 396.6ms TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-10-08 15:58:26,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9982 states. [2021-10-08 15:58:26,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9982 to 7176. [2021-10-08 15:58:26,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7176 states, 7166 states have (on average 3.433854312029026) internal successors, (24607), 7175 states have internal predecessors, (24607), 0 states have call successors, (0), 0 states 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 15:58:26,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7176 states to 7176 states and 24607 transitions. [2021-10-08 15:58:26,737 INFO L78 Accepts]: Start accepts. Automaton has 7176 states and 24607 transitions. Word has length 21 [2021-10-08 15:58:26,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:26,737 INFO L470 AbstractCegarLoop]: Abstraction has 7176 states and 24607 transitions. [2021-10-08 15:58:26,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:26,737 INFO L276 IsEmpty]: Start isEmpty. Operand 7176 states and 24607 transitions. [2021-10-08 15:58:26,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 15:58:26,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:26,752 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:26,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-08 15:58:26,753 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:26,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:26,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1758493468, now seen corresponding path program 5 times [2021-10-08 15:58:26,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:26,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755494973] [2021-10-08 15:58:26,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:26,754 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:26,888 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 15:58:26,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:26,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755494973] [2021-10-08 15:58:26,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755494973] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:26,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:26,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 15:58:26,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903779143] [2021-10-08 15:58:26,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 15:58:26,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:26,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 15:58:26,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-08 15:58:26,892 INFO L87 Difference]: Start difference. First operand 7176 states and 24607 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:27,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:27,736 INFO L93 Difference]: Finished difference Result 9738 states and 33897 transitions. [2021-10-08 15:58:27,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 15:58:27,737 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 15:58:27,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:27,800 INFO L225 Difference]: With dead ends: 9738 [2021-10-08 15:58:27,800 INFO L226 Difference]: Without dead ends: 9536 [2021-10-08 15:58:27,802 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 220.5ms TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-10-08 15:58:27,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9536 states. [2021-10-08 15:58:28,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9536 to 6188. [2021-10-08 15:58:28,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6188 states, 6178 states have (on average 3.3996438977015213) internal successors, (21003), 6187 states have internal predecessors, (21003), 0 states have call successors, (0), 0 states 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 15:58:28,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6188 states to 6188 states and 21003 transitions. [2021-10-08 15:58:28,266 INFO L78 Accepts]: Start accepts. Automaton has 6188 states and 21003 transitions. Word has length 21 [2021-10-08 15:58:28,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:28,267 INFO L470 AbstractCegarLoop]: Abstraction has 6188 states and 21003 transitions. [2021-10-08 15:58:28,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:28,267 INFO L276 IsEmpty]: Start isEmpty. Operand 6188 states and 21003 transitions. [2021-10-08 15:58:28,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 15:58:28,279 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:28,279 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:28,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-08 15:58:28,279 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:28,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:28,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1622557482, now seen corresponding path program 4 times [2021-10-08 15:58:28,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:28,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019930720] [2021-10-08 15:58:28,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:28,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:28,413 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 15:58:28,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:28,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019930720] [2021-10-08 15:58:28,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019930720] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:28,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:28,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 15:58:28,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895953686] [2021-10-08 15:58:28,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 15:58:28,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:28,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 15:58:28,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-08 15:58:28,416 INFO L87 Difference]: Start difference. First operand 6188 states and 21003 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:29,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:29,201 INFO L93 Difference]: Finished difference Result 8282 states and 28809 transitions. [2021-10-08 15:58:29,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 15:58:29,202 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 15:58:29,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:29,230 INFO L225 Difference]: With dead ends: 8282 [2021-10-08 15:58:29,231 INFO L226 Difference]: Without dead ends: 8142 [2021-10-08 15:58:29,231 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 240.4ms TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-10-08 15:58:29,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8142 states. [2021-10-08 15:58:29,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8142 to 6144. [2021-10-08 15:58:29,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6144 states, 6135 states have (on average 3.4) internal successors, (20859), 6143 states have internal predecessors, (20859), 0 states have call successors, (0), 0 states 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 15:58:29,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6144 states to 6144 states and 20859 transitions. [2021-10-08 15:58:29,406 INFO L78 Accepts]: Start accepts. Automaton has 6144 states and 20859 transitions. Word has length 21 [2021-10-08 15:58:29,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:29,407 INFO L470 AbstractCegarLoop]: Abstraction has 6144 states and 20859 transitions. [2021-10-08 15:58:29,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:29,407 INFO L276 IsEmpty]: Start isEmpty. Operand 6144 states and 20859 transitions. [2021-10-08 15:58:29,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 15:58:29,417 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:29,417 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:29,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-08 15:58:29,417 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:29,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:29,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1616792821, now seen corresponding path program 1 times [2021-10-08 15:58:29,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:29,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928651435] [2021-10-08 15:58:29,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:29,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:29,526 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 15:58:29,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:29,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928651435] [2021-10-08 15:58:29,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928651435] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:29,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:29,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 15:58:29,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659471837] [2021-10-08 15:58:29,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 15:58:29,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:29,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 15:58:29,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-08 15:58:29,528 INFO L87 Difference]: Start difference. First operand 6144 states and 20859 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:30,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:30,410 INFO L93 Difference]: Finished difference Result 8440 states and 29206 transitions. [2021-10-08 15:58:30,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 15:58:30,410 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 15:58:30,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:30,444 INFO L225 Difference]: With dead ends: 8440 [2021-10-08 15:58:30,445 INFO L226 Difference]: Without dead ends: 8262 [2021-10-08 15:58:30,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 197.3ms TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-10-08 15:58:30,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8262 states. [2021-10-08 15:58:30,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8262 to 6088. [2021-10-08 15:58:30,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6088 states, 6079 states have (on average 3.3954597795690082) internal successors, (20641), 6087 states have internal predecessors, (20641), 0 states have call successors, (0), 0 states 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 15:58:30,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6088 states to 6088 states and 20641 transitions. [2021-10-08 15:58:30,631 INFO L78 Accepts]: Start accepts. Automaton has 6088 states and 20641 transitions. Word has length 21 [2021-10-08 15:58:30,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:30,631 INFO L470 AbstractCegarLoop]: Abstraction has 6088 states and 20641 transitions. [2021-10-08 15:58:30,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:30,631 INFO L276 IsEmpty]: Start isEmpty. Operand 6088 states and 20641 transitions. [2021-10-08 15:58:30,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 15:58:30,643 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:30,643 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:30,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-08 15:58:30,643 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:30,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:30,643 INFO L82 PathProgramCache]: Analyzing trace with hash 2085973406, now seen corresponding path program 6 times [2021-10-08 15:58:30,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:30,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370596243] [2021-10-08 15:58:30,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:30,644 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:30,755 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 15:58:30,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:30,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370596243] [2021-10-08 15:58:30,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370596243] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:30,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:30,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 15:58:30,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962111020] [2021-10-08 15:58:30,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 15:58:30,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:30,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 15:58:30,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-08 15:58:30,757 INFO L87 Difference]: Start difference. First operand 6088 states and 20641 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:31,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:31,440 INFO L93 Difference]: Finished difference Result 8318 states and 28867 transitions. [2021-10-08 15:58:31,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 15:58:31,442 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 15:58:31,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:31,480 INFO L225 Difference]: With dead ends: 8318 [2021-10-08 15:58:31,481 INFO L226 Difference]: Without dead ends: 8108 [2021-10-08 15:58:31,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 208.2ms TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-10-08 15:58:31,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8108 states. [2021-10-08 15:58:31,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8108 to 5506. [2021-10-08 15:58:31,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5506 states, 5498 states have (on average 3.434157875591124) internal successors, (18881), 5505 states have internal predecessors, (18881), 0 states have call successors, (0), 0 states 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 15:58:31,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5506 states to 5506 states and 18881 transitions. [2021-10-08 15:58:31,718 INFO L78 Accepts]: Start accepts. Automaton has 5506 states and 18881 transitions. Word has length 21 [2021-10-08 15:58:31,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:31,719 INFO L470 AbstractCegarLoop]: Abstraction has 5506 states and 18881 transitions. [2021-10-08 15:58:31,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:31,719 INFO L276 IsEmpty]: Start isEmpty. Operand 5506 states and 18881 transitions. [2021-10-08 15:58:31,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 15:58:31,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:31,732 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:31,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-08 15:58:31,732 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:31,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:31,733 INFO L82 PathProgramCache]: Analyzing trace with hash 2085915887, now seen corresponding path program 2 times [2021-10-08 15:58:31,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:31,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073826348] [2021-10-08 15:58:31,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:31,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:31,866 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 15:58:31,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:31,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073826348] [2021-10-08 15:58:31,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073826348] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:31,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:31,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 15:58:31,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134132630] [2021-10-08 15:58:31,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 15:58:31,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:31,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 15:58:31,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-08 15:58:31,869 INFO L87 Difference]: Start difference. First operand 5506 states and 18881 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:32,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:32,730 INFO L93 Difference]: Finished difference Result 7598 states and 26713 transitions. [2021-10-08 15:58:32,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 15:58:32,731 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 15:58:32,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:32,755 INFO L225 Difference]: With dead ends: 7598 [2021-10-08 15:58:32,755 INFO L226 Difference]: Without dead ends: 7332 [2021-10-08 15:58:32,755 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 228.6ms TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-10-08 15:58:32,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7332 states. [2021-10-08 15:58:32,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7332 to 5266. [2021-10-08 15:58:32,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5266 states, 5259 states have (on average 3.453888571971858) internal successors, (18164), 5265 states have internal predecessors, (18164), 0 states have call successors, (0), 0 states 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 15:58:32,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5266 states to 5266 states and 18164 transitions. [2021-10-08 15:58:32,918 INFO L78 Accepts]: Start accepts. Automaton has 5266 states and 18164 transitions. Word has length 21 [2021-10-08 15:58:32,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:32,918 INFO L470 AbstractCegarLoop]: Abstraction has 5266 states and 18164 transitions. [2021-10-08 15:58:32,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:32,919 INFO L276 IsEmpty]: Start isEmpty. Operand 5266 states and 18164 transitions. [2021-10-08 15:58:32,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 15:58:32,929 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:32,929 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:32,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-08 15:58:32,930 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:32,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:32,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1086757367, now seen corresponding path program 1 times [2021-10-08 15:58:32,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:32,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338874151] [2021-10-08 15:58:32,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:32,931 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:33,058 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 15:58:33,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:33,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338874151] [2021-10-08 15:58:33,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338874151] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:33,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:33,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 15:58:33,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695074246] [2021-10-08 15:58:33,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 15:58:33,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:33,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 15:58:33,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-08 15:58:33,061 INFO L87 Difference]: Start difference. First operand 5266 states and 18164 transitions. Second operand has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15:58:33,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:33,922 INFO L93 Difference]: Finished difference Result 10698 states and 36117 transitions. [2021-10-08 15:58:33,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 15:58:33,923 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15:58:33,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:33,964 INFO L225 Difference]: With dead ends: 10698 [2021-10-08 15:58:33,965 INFO L226 Difference]: Without dead ends: 10612 [2021-10-08 15:58:33,965 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 237.0ms TimeCoverageRelationStatistics Valid=217, Invalid=539, Unknown=0, NotChecked=0, Total=756 [2021-10-08 15:58:33,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10612 states. [2021-10-08 15:58:34,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10612 to 5730. [2021-10-08 15:58:34,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5730 states, 5723 states have (on average 3.4467936396994583) internal successors, (19726), 5729 states have internal predecessors, (19726), 0 states have call successors, (0), 0 states 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 15:58:34,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5730 states to 5730 states and 19726 transitions. [2021-10-08 15:58:34,294 INFO L78 Accepts]: Start accepts. Automaton has 5730 states and 19726 transitions. Word has length 22 [2021-10-08 15:58:34,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:34,295 INFO L470 AbstractCegarLoop]: Abstraction has 5730 states and 19726 transitions. [2021-10-08 15:58:34,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15:58:34,295 INFO L276 IsEmpty]: Start isEmpty. Operand 5730 states and 19726 transitions. [2021-10-08 15:58:34,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 15:58:34,308 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:34,308 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:34,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-08 15:58:34,309 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:34,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:34,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1247321867, now seen corresponding path program 2 times [2021-10-08 15:58:34,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:34,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143514872] [2021-10-08 15:58:34,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:34,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:34,442 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 15:58:34,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:34,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143514872] [2021-10-08 15:58:34,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143514872] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:34,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:34,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 15:58:34,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881274077] [2021-10-08 15:58:34,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 15:58:34,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:34,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 15:58:34,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-08 15:58:34,446 INFO L87 Difference]: Start difference. First operand 5730 states and 19726 transitions. Second operand has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15:58:35,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:35,551 INFO L93 Difference]: Finished difference Result 10286 states and 35836 transitions. [2021-10-08 15:58:35,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 15:58:35,552 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15:58:35,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:35,603 INFO L225 Difference]: With dead ends: 10286 [2021-10-08 15:58:35,603 INFO L226 Difference]: Without dead ends: 10136 [2021-10-08 15:58:35,604 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 270.5ms TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2021-10-08 15:58:35,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10136 states. [2021-10-08 15:58:35,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10136 to 5716. [2021-10-08 15:58:35,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5716 states, 5709 states have (on average 3.4463128393764233) internal successors, (19675), 5715 states have internal predecessors, (19675), 0 states have call successors, (0), 0 states 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 15:58:35,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5716 states to 5716 states and 19675 transitions. [2021-10-08 15:58:35,935 INFO L78 Accepts]: Start accepts. Automaton has 5716 states and 19675 transitions. Word has length 22 [2021-10-08 15:58:35,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:35,936 INFO L470 AbstractCegarLoop]: Abstraction has 5716 states and 19675 transitions. [2021-10-08 15:58:35,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15:58:35,936 INFO L276 IsEmpty]: Start isEmpty. Operand 5716 states and 19675 transitions. [2021-10-08 15:58:35,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 15:58:35,962 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:35,962 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:35,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-08 15:58:35,963 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:35,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:35,963 INFO L82 PathProgramCache]: Analyzing trace with hash 997428809, now seen corresponding path program 3 times [2021-10-08 15:58:35,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:35,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093663205] [2021-10-08 15:58:35,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:35,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:36,139 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 15:58:36,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:36,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093663205] [2021-10-08 15:58:36,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093663205] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:36,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:36,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 15:58:36,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872608891] [2021-10-08 15:58:36,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 15:58:36,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:36,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 15:58:36,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-08 15:58:36,141 INFO L87 Difference]: Start difference. First operand 5716 states and 19675 transitions. Second operand has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15:58:36,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:36,872 INFO L93 Difference]: Finished difference Result 9068 states and 31555 transitions. [2021-10-08 15:58:36,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 15:58:36,873 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15:58:36,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:36,990 INFO L225 Difference]: With dead ends: 9068 [2021-10-08 15:58:36,991 INFO L226 Difference]: Without dead ends: 8742 [2021-10-08 15:58:36,991 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 184.4ms TimeCoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2021-10-08 15:58:37,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8742 states. [2021-10-08 15:58:37,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8742 to 6090. [2021-10-08 15:58:37,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6090 states, 6083 states have (on average 3.43646227190531) internal successors, (20904), 6089 states have internal predecessors, (20904), 0 states have call successors, (0), 0 states 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 15:58:37,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6090 states to 6090 states and 20904 transitions. [2021-10-08 15:58:37,173 INFO L78 Accepts]: Start accepts. Automaton has 6090 states and 20904 transitions. Word has length 22 [2021-10-08 15:58:37,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:37,174 INFO L470 AbstractCegarLoop]: Abstraction has 6090 states and 20904 transitions. [2021-10-08 15:58:37,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15:58:37,174 INFO L276 IsEmpty]: Start isEmpty. Operand 6090 states and 20904 transitions. [2021-10-08 15:58:37,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 15:58:37,189 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:37,189 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:37,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-08 15:58:37,189 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:37,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:37,190 INFO L82 PathProgramCache]: Analyzing trace with hash 532553927, now seen corresponding path program 4 times [2021-10-08 15:58:37,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:37,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602050131] [2021-10-08 15:58:37,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:37,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:37,326 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 15:58:37,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:37,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602050131] [2021-10-08 15:58:37,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602050131] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:37,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:37,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 15:58:37,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979900196] [2021-10-08 15:58:37,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 15:58:37,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:37,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 15:58:37,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:58:37,330 INFO L87 Difference]: Start difference. First operand 6090 states and 20904 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 15:58:38,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:38,059 INFO L93 Difference]: Finished difference Result 9966 states and 34751 transitions. [2021-10-08 15:58:38,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 15:58:38,060 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 15:58:38,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:38,099 INFO L225 Difference]: With dead ends: 9966 [2021-10-08 15:58:38,099 INFO L226 Difference]: Without dead ends: 9782 [2021-10-08 15:58:38,100 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 217.1ms TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2021-10-08 15:58:38,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9782 states. [2021-10-08 15:58:38,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9782 to 7098. [2021-10-08 15:58:38,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7098 states, 7091 states have (on average 3.5196728247073756) internal successors, (24958), 7097 states have internal predecessors, (24958), 0 states have call successors, (0), 0 states 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 15:58:38,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7098 states to 7098 states and 24958 transitions. [2021-10-08 15:58:38,338 INFO L78 Accepts]: Start accepts. Automaton has 7098 states and 24958 transitions. Word has length 22 [2021-10-08 15:58:38,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:38,338 INFO L470 AbstractCegarLoop]: Abstraction has 7098 states and 24958 transitions. [2021-10-08 15:58:38,338 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 15:58:38,338 INFO L276 IsEmpty]: Start isEmpty. Operand 7098 states and 24958 transitions. [2021-10-08 15:58:38,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 15:58:38,351 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:38,352 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:38,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-08 15:58:38,352 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:38,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:38,353 INFO L82 PathProgramCache]: Analyzing trace with hash -574360759, now seen corresponding path program 5 times [2021-10-08 15:58:38,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:38,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930897487] [2021-10-08 15:58:38,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:38,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:38,528 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 15:58:38,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:38,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930897487] [2021-10-08 15:58:38,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930897487] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:38,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:38,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 15:58:38,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443383165] [2021-10-08 15:58:38,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 15:58:38,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:38,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 15:58:38,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-08 15:58:38,532 INFO L87 Difference]: Start difference. First operand 7098 states and 24958 transitions. Second operand has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15:58:39,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:39,422 INFO L93 Difference]: Finished difference Result 12300 states and 41260 transitions. [2021-10-08 15:58:39,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 15:58:39,422 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15:58:39,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:39,462 INFO L225 Difference]: With dead ends: 12300 [2021-10-08 15:58:39,462 INFO L226 Difference]: Without dead ends: 12196 [2021-10-08 15:58:39,463 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 229.4ms TimeCoverageRelationStatistics Valid=219, Invalid=537, Unknown=0, NotChecked=0, Total=756 [2021-10-08 15:58:39,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12196 states. [2021-10-08 15:58:39,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12196 to 7390. [2021-10-08 15:58:39,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7390 states, 7383 states have (on average 3.5160503860219423) internal successors, (25959), 7389 states have internal predecessors, (25959), 0 states have call successors, (0), 0 states 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 15:58:39,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7390 states to 7390 states and 25959 transitions. [2021-10-08 15:58:39,720 INFO L78 Accepts]: Start accepts. Automaton has 7390 states and 25959 transitions. Word has length 22 [2021-10-08 15:58:39,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:39,720 INFO L470 AbstractCegarLoop]: Abstraction has 7390 states and 25959 transitions. [2021-10-08 15:58:39,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15:58:39,720 INFO L276 IsEmpty]: Start isEmpty. Operand 7390 states and 25959 transitions. [2021-10-08 15:58:39,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 15:58:39,737 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:39,737 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:39,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-10-08 15:58:39,737 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:39,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:39,738 INFO L82 PathProgramCache]: Analyzing trace with hash -708420259, now seen corresponding path program 6 times [2021-10-08 15:58:39,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:39,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740248066] [2021-10-08 15:58:39,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:39,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:39,874 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 15:58:39,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:39,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740248066] [2021-10-08 15:58:39,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740248066] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:39,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:39,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 15:58:39,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676538374] [2021-10-08 15:58:39,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 15:58:39,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:39,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 15:58:39,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-08 15:58:39,877 INFO L87 Difference]: Start difference. First operand 7390 states and 25959 transitions. Second operand has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15:58:40,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:40,850 INFO L93 Difference]: Finished difference Result 11734 states and 40514 transitions. [2021-10-08 15:58:40,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 15:58:40,850 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15:58:40,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:40,892 INFO L225 Difference]: With dead ends: 11734 [2021-10-08 15:58:40,892 INFO L226 Difference]: Without dead ends: 11614 [2021-10-08 15:58:40,893 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 325.9ms TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 15:58:40,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11614 states. [2021-10-08 15:58:41,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11614 to 7504. [2021-10-08 15:58:41,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7504 states, 7497 states have (on average 3.5164732559690544) internal successors, (26363), 7503 states have internal predecessors, (26363), 0 states have call successors, (0), 0 states 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 15:58:41,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7504 states to 7504 states and 26363 transitions. [2021-10-08 15:58:41,141 INFO L78 Accepts]: Start accepts. Automaton has 7504 states and 26363 transitions. Word has length 22 [2021-10-08 15:58:41,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:41,141 INFO L470 AbstractCegarLoop]: Abstraction has 7504 states and 26363 transitions. [2021-10-08 15:58:41,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15:58:41,142 INFO L276 IsEmpty]: Start isEmpty. Operand 7504 states and 26363 transitions. [2021-10-08 15:58:41,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 15:58:41,158 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:41,158 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:41,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-10-08 15:58:41,159 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:41,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:41,159 INFO L82 PathProgramCache]: Analyzing trace with hash -929470653, now seen corresponding path program 7 times [2021-10-08 15:58:41,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:41,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115877410] [2021-10-08 15:58:41,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:41,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:41,265 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 15:58:41,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:41,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115877410] [2021-10-08 15:58:41,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115877410] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:41,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:41,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 15:58:41,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193935217] [2021-10-08 15:58:41,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 15:58:41,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:41,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 15:58:41,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-08 15:58:41,268 INFO L87 Difference]: Start difference. First operand 7504 states and 26363 transitions. Second operand has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15:58:42,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:42,070 INFO L93 Difference]: Finished difference Result 10216 states and 35316 transitions. [2021-10-08 15:58:42,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 15:58:42,071 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15:58:42,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:42,108 INFO L225 Difference]: With dead ends: 10216 [2021-10-08 15:58:42,108 INFO L226 Difference]: Without dead ends: 10122 [2021-10-08 15:58:42,109 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 215.3ms TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2021-10-08 15:58:42,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10122 states. [2021-10-08 15:58:42,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10122 to 7892. [2021-10-08 15:58:42,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7892 states, 7885 states have (on average 3.499556119213697) internal successors, (27594), 7891 states have internal predecessors, (27594), 0 states have call successors, (0), 0 states 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 15:58:42,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7892 states to 7892 states and 27594 transitions. [2021-10-08 15:58:42,356 INFO L78 Accepts]: Start accepts. Automaton has 7892 states and 27594 transitions. Word has length 22 [2021-10-08 15:58:42,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:42,356 INFO L470 AbstractCegarLoop]: Abstraction has 7892 states and 27594 transitions. [2021-10-08 15:58:42,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15:58:42,357 INFO L276 IsEmpty]: Start isEmpty. Operand 7892 states and 27594 transitions. [2021-10-08 15:58:42,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 15:58:42,376 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:42,377 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:42,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-10-08 15:58:42,377 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:42,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:42,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1021337772, now seen corresponding path program 1 times [2021-10-08 15:58:42,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:42,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372398362] [2021-10-08 15:58:42,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:42,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:42,497 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 15:58:42,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:42,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372398362] [2021-10-08 15:58:42,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372398362] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:42,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:42,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 15:58:42,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143208452] [2021-10-08 15:58:42,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 15:58:42,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:42,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 15:58:42,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-08 15:58:42,500 INFO L87 Difference]: Start difference. First operand 7892 states and 27594 transitions. Second operand has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15:58:43,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:43,532 INFO L93 Difference]: Finished difference Result 10128 states and 35042 transitions. [2021-10-08 15:58:43,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 15:58:43,533 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15:58:43,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:43,584 INFO L225 Difference]: With dead ends: 10128 [2021-10-08 15:58:43,584 INFO L226 Difference]: Without dead ends: 9900 [2021-10-08 15:58:43,585 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 214.6ms TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2021-10-08 15:58:43,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9900 states. [2021-10-08 15:58:43,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9900 to 8006. [2021-10-08 15:58:43,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8006 states, 7999 states have (on average 3.4899362420302538) internal successors, (27916), 8005 states have internal predecessors, (27916), 0 states have call successors, (0), 0 states 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 15:58:43,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8006 states to 8006 states and 27916 transitions. [2021-10-08 15:58:43,883 INFO L78 Accepts]: Start accepts. Automaton has 8006 states and 27916 transitions. Word has length 22 [2021-10-08 15:58:43,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:43,883 INFO L470 AbstractCegarLoop]: Abstraction has 8006 states and 27916 transitions. [2021-10-08 15:58:43,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15:58:43,884 INFO L276 IsEmpty]: Start isEmpty. Operand 8006 states and 27916 transitions. [2021-10-08 15:58:43,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 15:58:43,904 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:43,905 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:43,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-10-08 15:58:43,905 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:43,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:43,906 INFO L82 PathProgramCache]: Analyzing trace with hash -704942097, now seen corresponding path program 8 times [2021-10-08 15:58:43,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:43,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845049891] [2021-10-08 15:58:43,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:43,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:44,058 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 15:58:44,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:44,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845049891] [2021-10-08 15:58:44,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845049891] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:44,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:44,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 15:58:44,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516183794] [2021-10-08 15:58:44,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 15:58:44,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:44,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 15:58:44,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:58:44,062 INFO L87 Difference]: Start difference. First operand 8006 states and 27916 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 15:58:44,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:44,762 INFO L93 Difference]: Finished difference Result 10708 states and 36868 transitions. [2021-10-08 15:58:44,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 15:58:44,763 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 15:58:44,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:44,804 INFO L225 Difference]: With dead ends: 10708 [2021-10-08 15:58:44,804 INFO L226 Difference]: Without dead ends: 10614 [2021-10-08 15:58:44,805 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 227.1ms TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2021-10-08 15:58:44,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10614 states. [2021-10-08 15:58:45,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10614 to 8504. [2021-10-08 15:58:45,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8504 states, 8497 states have (on average 3.4993527127221373) internal successors, (29734), 8503 states have internal predecessors, (29734), 0 states have call successors, (0), 0 states 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 15:58:45,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8504 states to 8504 states and 29734 transitions. [2021-10-08 15:58:45,093 INFO L78 Accepts]: Start accepts. Automaton has 8504 states and 29734 transitions. Word has length 22 [2021-10-08 15:58:45,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:45,093 INFO L470 AbstractCegarLoop]: Abstraction has 8504 states and 29734 transitions. [2021-10-08 15:58:45,093 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 15:58:45,093 INFO L276 IsEmpty]: Start isEmpty. Operand 8504 states and 29734 transitions. [2021-10-08 15:58:45,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 15:58:45,117 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:45,117 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:45,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-10-08 15:58:45,118 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:45,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:45,119 INFO L82 PathProgramCache]: Analyzing trace with hash -704999616, now seen corresponding path program 2 times [2021-10-08 15:58:45,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:45,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974346288] [2021-10-08 15:58:45,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:45,119 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:45,263 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 15:58:45,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:45,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974346288] [2021-10-08 15:58:45,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974346288] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:45,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:45,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 15:58:45,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272096466] [2021-10-08 15:58:45,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 15:58:45,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:45,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 15:58:45,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:58:45,266 INFO L87 Difference]: Start difference. First operand 8504 states and 29734 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 15:58:45,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:45,934 INFO L93 Difference]: Finished difference Result 10548 states and 36426 transitions. [2021-10-08 15:58:45,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 15:58:45,935 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 15:58:45,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:45,976 INFO L225 Difference]: With dead ends: 10548 [2021-10-08 15:58:45,976 INFO L226 Difference]: Without dead ends: 10324 [2021-10-08 15:58:45,977 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 209.4ms TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2021-10-08 15:58:46,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10324 states. [2021-10-08 15:58:46,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10324 to 8332. [2021-10-08 15:58:46,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8332 states, 8325 states have (on average 3.507867867867868) internal successors, (29203), 8331 states have internal predecessors, (29203), 0 states have call successors, (0), 0 states 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 15:58:46,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8332 states to 8332 states and 29203 transitions. [2021-10-08 15:58:46,237 INFO L78 Accepts]: Start accepts. Automaton has 8332 states and 29203 transitions. Word has length 22 [2021-10-08 15:58:46,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:46,237 INFO L470 AbstractCegarLoop]: Abstraction has 8332 states and 29203 transitions. [2021-10-08 15:58:46,238 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 15:58:46,238 INFO L276 IsEmpty]: Start isEmpty. Operand 8332 states and 29203 transitions. [2021-10-08 15:58:46,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 15:58:46,256 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:46,256 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:46,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-10-08 15:58:46,257 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:46,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:46,257 INFO L82 PathProgramCache]: Analyzing trace with hash 213656003, now seen corresponding path program 9 times [2021-10-08 15:58:46,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:46,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035943924] [2021-10-08 15:58:46,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:46,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:46,375 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 15:58:46,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:46,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035943924] [2021-10-08 15:58:46,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035943924] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:46,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:46,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 15:58:46,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804295043] [2021-10-08 15:58:46,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 15:58:46,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:46,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 15:58:46,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-08 15:58:46,377 INFO L87 Difference]: Start difference. First operand 8332 states and 29203 transitions. Second operand has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15:58:46,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:46,990 INFO L93 Difference]: Finished difference Result 9634 states and 33520 transitions. [2021-10-08 15:58:46,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 15:58:46,991 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15:58:46,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:47,024 INFO L225 Difference]: With dead ends: 9634 [2021-10-08 15:58:47,024 INFO L226 Difference]: Without dead ends: 9328 [2021-10-08 15:58:47,025 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 157.6ms TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2021-10-08 15:58:47,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9328 states. [2021-10-08 15:58:47,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9328 to 6846. [2021-10-08 15:58:47,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6846 states, 6839 states have (on average 3.474192133352829) internal successors, (23760), 6845 states have internal predecessors, (23760), 0 states have call successors, (0), 0 states 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 15:58:47,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6846 states to 6846 states and 23760 transitions. [2021-10-08 15:58:47,227 INFO L78 Accepts]: Start accepts. Automaton has 6846 states and 23760 transitions. Word has length 22 [2021-10-08 15:58:47,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:47,228 INFO L470 AbstractCegarLoop]: Abstraction has 6846 states and 23760 transitions. [2021-10-08 15:58:47,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15:58:47,228 INFO L276 IsEmpty]: Start isEmpty. Operand 6846 states and 23760 transitions. [2021-10-08 15:58:47,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 15:58:47,241 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:47,241 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:47,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-10-08 15:58:47,242 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:47,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:47,242 INFO L82 PathProgramCache]: Analyzing trace with hash 426874947, now seen corresponding path program 10 times [2021-10-08 15:58:47,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:47,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788324117] [2021-10-08 15:58:47,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:47,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:47,374 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 15:58:47,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:47,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788324117] [2021-10-08 15:58:47,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788324117] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:47,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:47,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 15:58:47,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314094654] [2021-10-08 15:58:47,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 15:58:47,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:47,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 15:58:47,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:58:47,382 INFO L87 Difference]: Start difference. First operand 6846 states and 23760 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 15:58:48,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:48,077 INFO L93 Difference]: Finished difference Result 8192 states and 28806 transitions. [2021-10-08 15:58:48,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 15:58:48,078 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 15:58:48,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:48,107 INFO L225 Difference]: With dead ends: 8192 [2021-10-08 15:58:48,107 INFO L226 Difference]: Without dead ends: 8070 [2021-10-08 15:58:48,107 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 166.8ms TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-10-08 15:58:48,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8070 states. [2021-10-08 15:58:48,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8070 to 6308. [2021-10-08 15:58:48,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6308 states, 6302 states have (on average 3.501586797841955) internal successors, (22067), 6307 states have internal predecessors, (22067), 0 states have call successors, (0), 0 states 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 15:58:48,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6308 states to 6308 states and 22067 transitions. [2021-10-08 15:58:48,286 INFO L78 Accepts]: Start accepts. Automaton has 6308 states and 22067 transitions. Word has length 22 [2021-10-08 15:58:48,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:48,286 INFO L470 AbstractCegarLoop]: Abstraction has 6308 states and 22067 transitions. [2021-10-08 15:58:48,286 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 15:58:48,286 INFO L276 IsEmpty]: Start isEmpty. Operand 6308 states and 22067 transitions. [2021-10-08 15:58:48,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 15:58:48,298 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:48,298 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:48,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-10-08 15:58:48,298 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:48,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:48,298 INFO L82 PathProgramCache]: Analyzing trace with hash 426817428, now seen corresponding path program 3 times [2021-10-08 15:58:48,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:48,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201584381] [2021-10-08 15:58:48,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:48,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:48,422 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 15:58:48,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:48,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201584381] [2021-10-08 15:58:48,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201584381] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:48,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:48,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 15:58:48,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309447464] [2021-10-08 15:58:48,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 15:58:48,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:48,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 15:58:48,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:58:48,426 INFO L87 Difference]: Start difference. First operand 6308 states and 22067 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 15:58:49,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:49,030 INFO L93 Difference]: Finished difference Result 7708 states and 27294 transitions. [2021-10-08 15:58:49,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 15:58:49,030 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 15:58:49,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:49,056 INFO L225 Difference]: With dead ends: 7708 [2021-10-08 15:58:49,056 INFO L226 Difference]: Without dead ends: 7318 [2021-10-08 15:58:49,057 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 152.0ms TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-10-08 15:58:49,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7318 states. [2021-10-08 15:58:49,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7318 to 4924. [2021-10-08 15:58:49,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4924 states, 4918 states have (on average 3.425579503863359) internal successors, (16847), 4923 states have internal predecessors, (16847), 0 states have call successors, (0), 0 states 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 15:58:49,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4924 states to 4924 states and 16847 transitions. [2021-10-08 15:58:49,196 INFO L78 Accepts]: Start accepts. Automaton has 4924 states and 16847 transitions. Word has length 22 [2021-10-08 15:58:49,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:49,197 INFO L470 AbstractCegarLoop]: Abstraction has 4924 states and 16847 transitions. [2021-10-08 15:58:49,197 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 15:58:49,197 INFO L276 IsEmpty]: Start isEmpty. Operand 4924 states and 16847 transitions. [2021-10-08 15:58:49,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 15:58:49,207 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:49,207 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:49,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-10-08 15:58:49,207 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:49,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:49,207 INFO L82 PathProgramCache]: Analyzing trace with hash 2116444040, now seen corresponding path program 4 times [2021-10-08 15:58:49,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:49,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311353499] [2021-10-08 15:58:49,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:49,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:49,342 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 15:58:49,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:49,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311353499] [2021-10-08 15:58:49,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311353499] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:49,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:49,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 15:58:49,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471738974] [2021-10-08 15:58:49,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 15:58:49,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:49,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 15:58:49,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-08 15:58:49,345 INFO L87 Difference]: Start difference. First operand 4924 states and 16847 transitions. Second operand has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15:58:49,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:49,929 INFO L93 Difference]: Finished difference Result 6590 states and 23461 transitions. [2021-10-08 15:58:49,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 15:58:49,929 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15:58:49,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:49,966 INFO L225 Difference]: With dead ends: 6590 [2021-10-08 15:58:49,966 INFO L226 Difference]: Without dead ends: 6154 [2021-10-08 15:58:49,967 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 137.4ms TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-10-08 15:58:49,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6154 states. [2021-10-08 15:58:50,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6154 to 4624. [2021-10-08 15:58:50,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4624 states, 4619 states have (on average 3.424767265641914) internal successors, (15819), 4623 states have internal predecessors, (15819), 0 states have call successors, (0), 0 states 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 15:58:50,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4624 states to 4624 states and 15819 transitions. [2021-10-08 15:58:50,128 INFO L78 Accepts]: Start accepts. Automaton has 4624 states and 15819 transitions. Word has length 22 [2021-10-08 15:58:50,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:50,128 INFO L470 AbstractCegarLoop]: Abstraction has 4624 states and 15819 transitions. [2021-10-08 15:58:50,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 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 15:58:50,129 INFO L276 IsEmpty]: Start isEmpty. Operand 4624 states and 15819 transitions. [2021-10-08 15:58:50,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 15:58:50,137 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:50,138 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:50,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-10-08 15:58:50,138 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:50,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:50,138 INFO L82 PathProgramCache]: Analyzing trace with hash 2041295787, now seen corresponding path program 1 times [2021-10-08 15:58:50,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:50,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981602716] [2021-10-08 15:58:50,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:50,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:50,250 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 15:58:50,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:50,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981602716] [2021-10-08 15:58:50,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981602716] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:50,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:50,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 15:58:50,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200288041] [2021-10-08 15:58:50,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 15:58:50,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:50,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 15:58:50,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-08 15:58:50,253 INFO L87 Difference]: Start difference. First operand 4624 states and 15819 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 15:58:50,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:50,836 INFO L93 Difference]: Finished difference Result 6252 states and 22260 transitions. [2021-10-08 15:58:50,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 15:58:50,836 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 15:58:50,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:50,856 INFO L225 Difference]: With dead ends: 6252 [2021-10-08 15:58:50,856 INFO L226 Difference]: Without dead ends: 5748 [2021-10-08 15:58:50,856 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 172.6ms TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-10-08 15:58:50,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5748 states. [2021-10-08 15:58:50,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5748 to 4352. [2021-10-08 15:58:50,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4352 states, 4347 states have (on average 3.409937888198758) internal successors, (14823), 4351 states have internal predecessors, (14823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:58:50,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4352 states to 4352 states and 14823 transitions. [2021-10-08 15:58:50,970 INFO L78 Accepts]: Start accepts. Automaton has 4352 states and 14823 transitions. Word has length 23 [2021-10-08 15:58:50,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:50,970 INFO L470 AbstractCegarLoop]: Abstraction has 4352 states and 14823 transitions. [2021-10-08 15:58:50,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 15:58:50,971 INFO L276 IsEmpty]: Start isEmpty. Operand 4352 states and 14823 transitions. [2021-10-08 15:58:50,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 15:58:50,980 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:50,980 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:50,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-10-08 15:58:50,981 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:50,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:50,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1006128875, now seen corresponding path program 2 times [2021-10-08 15:58:50,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:50,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015768749] [2021-10-08 15:58:50,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:50,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:51,096 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 15:58:51,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:51,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015768749] [2021-10-08 15:58:51,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015768749] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:51,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:51,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 15:58:51,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111434762] [2021-10-08 15:58:51,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 15:58:51,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:51,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 15:58:51,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-08 15:58:51,101 INFO L87 Difference]: Start difference. First operand 4352 states and 14823 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 15:58:51,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:51,711 INFO L93 Difference]: Finished difference Result 5776 states and 20551 transitions. [2021-10-08 15:58:51,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 15:58:51,712 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 15:58:51,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:51,731 INFO L225 Difference]: With dead ends: 5776 [2021-10-08 15:58:51,731 INFO L226 Difference]: Without dead ends: 5022 [2021-10-08 15:58:51,732 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 162.5ms TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-10-08 15:58:51,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5022 states. [2021-10-08 15:58:51,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5022 to 3692. [2021-10-08 15:58:51,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3692 states, 3688 states have (on average 3.4674620390455533) internal successors, (12788), 3691 states have internal predecessors, (12788), 0 states have call successors, (0), 0 states 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 15:58:51,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3692 states to 3692 states and 12788 transitions. [2021-10-08 15:58:51,847 INFO L78 Accepts]: Start accepts. Automaton has 3692 states and 12788 transitions. Word has length 23 [2021-10-08 15:58:51,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:51,847 INFO L470 AbstractCegarLoop]: Abstraction has 3692 states and 12788 transitions. [2021-10-08 15:58:51,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 15:58:51,848 INFO L276 IsEmpty]: Start isEmpty. Operand 3692 states and 12788 transitions. [2021-10-08 15:58:51,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:58:51,855 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:51,856 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:51,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-10-08 15:58:51,856 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:51,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:51,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1999905633, now seen corresponding path program 1 times [2021-10-08 15:58:51,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:51,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238848891] [2021-10-08 15:58:51,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:51,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:51,975 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 15:58:51,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:51,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238848891] [2021-10-08 15:58:51,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238848891] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:51,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:51,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 15:58:51,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623323044] [2021-10-08 15:58:51,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 15:58:51,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:51,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 15:58:51,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:58:51,981 INFO L87 Difference]: Start difference. First operand 3692 states and 12788 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:58:52,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:52,893 INFO L93 Difference]: Finished difference Result 6814 states and 23928 transitions. [2021-10-08 15:58:52,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 15:58:52,893 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 28 [2021-10-08 15:58:52,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:52,917 INFO L225 Difference]: With dead ends: 6814 [2021-10-08 15:58:52,917 INFO L226 Difference]: Without dead ends: 6798 [2021-10-08 15:58:52,918 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 314.1ms TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2021-10-08 15:58:52,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6798 states. [2021-10-08 15:58:53,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6798 to 3828. [2021-10-08 15:58:53,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3828 states, 3824 states have (on average 3.4597280334728033) internal successors, (13230), 3827 states have internal predecessors, (13230), 0 states have call successors, (0), 0 states 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 15:58:53,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3828 states to 3828 states and 13230 transitions. [2021-10-08 15:58:53,036 INFO L78 Accepts]: Start accepts. Automaton has 3828 states and 13230 transitions. Word has length 28 [2021-10-08 15:58:53,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:53,036 INFO L470 AbstractCegarLoop]: Abstraction has 3828 states and 13230 transitions. [2021-10-08 15:58:53,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:58:53,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3828 states and 13230 transitions. [2021-10-08 15:58:53,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:58:53,046 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:53,046 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:53,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-10-08 15:58:53,046 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:53,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:53,047 INFO L82 PathProgramCache]: Analyzing trace with hash -2003886695, now seen corresponding path program 1 times [2021-10-08 15:58:53,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:53,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455435715] [2021-10-08 15:58:53,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:53,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:53,169 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 15:58:53,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:53,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455435715] [2021-10-08 15:58:53,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455435715] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:53,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:53,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 15:58:53,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488081976] [2021-10-08 15:58:53,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 15:58:53,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:53,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 15:58:53,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:58:53,173 INFO L87 Difference]: Start difference. First operand 3828 states and 13230 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:58:54,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:54,106 INFO L93 Difference]: Finished difference Result 6854 states and 24031 transitions. [2021-10-08 15:58:54,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 15:58:54,107 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 28 [2021-10-08 15:58:54,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:54,129 INFO L225 Difference]: With dead ends: 6854 [2021-10-08 15:58:54,129 INFO L226 Difference]: Without dead ends: 6806 [2021-10-08 15:58:54,130 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 320.8ms TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2021-10-08 15:58:54,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6806 states. [2021-10-08 15:58:54,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6806 to 3804. [2021-10-08 15:58:54,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3804 states, 3800 states have (on average 3.4642105263157896) internal successors, (13164), 3803 states have internal predecessors, (13164), 0 states have call successors, (0), 0 states 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 15:58:54,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3804 states to 3804 states and 13164 transitions. [2021-10-08 15:58:54,249 INFO L78 Accepts]: Start accepts. Automaton has 3804 states and 13164 transitions. Word has length 28 [2021-10-08 15:58:54,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:54,249 INFO L470 AbstractCegarLoop]: Abstraction has 3804 states and 13164 transitions. [2021-10-08 15:58:54,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:58:54,250 INFO L276 IsEmpty]: Start isEmpty. Operand 3804 states and 13164 transitions. [2021-10-08 15:58:54,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:58:54,259 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:54,259 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:54,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-10-08 15:58:54,260 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:54,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:54,260 INFO L82 PathProgramCache]: Analyzing trace with hash -995620289, now seen corresponding path program 2 times [2021-10-08 15:58:54,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:54,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961150235] [2021-10-08 15:58:54,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:54,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:54,386 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 15:58:54,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:54,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961150235] [2021-10-08 15:58:54,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961150235] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:54,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:54,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 15:58:54,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941999037] [2021-10-08 15:58:54,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 15:58:54,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:54,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 15:58:54,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:58:54,388 INFO L87 Difference]: Start difference. First operand 3804 states and 13164 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:58:55,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:55,330 INFO L93 Difference]: Finished difference Result 8590 states and 29550 transitions. [2021-10-08 15:58:55,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 15:58:55,331 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 28 [2021-10-08 15:58:55,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:55,357 INFO L225 Difference]: With dead ends: 8590 [2021-10-08 15:58:55,357 INFO L226 Difference]: Without dead ends: 8566 [2021-10-08 15:58:55,358 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 312.1ms TimeCoverageRelationStatistics Valid=259, Invalid=671, Unknown=0, NotChecked=0, Total=930 [2021-10-08 15:58:55,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8566 states. [2021-10-08 15:58:55,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8566 to 3806. [2021-10-08 15:58:55,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3806 states, 3802 states have (on average 3.4631772751183587) internal successors, (13167), 3805 states have internal predecessors, (13167), 0 states have call successors, (0), 0 states 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 15:58:55,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3806 states to 3806 states and 13167 transitions. [2021-10-08 15:58:55,495 INFO L78 Accepts]: Start accepts. Automaton has 3806 states and 13167 transitions. Word has length 28 [2021-10-08 15:58:55,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:55,495 INFO L470 AbstractCegarLoop]: Abstraction has 3806 states and 13167 transitions. [2021-10-08 15:58:55,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:58:55,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3806 states and 13167 transitions. [2021-10-08 15:58:55,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:58:55,504 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:55,504 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:55,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-10-08 15:58:55,504 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:55,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:55,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1117167569, now seen corresponding path program 3 times [2021-10-08 15:58:55,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:55,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560656771] [2021-10-08 15:58:55,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:55,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:55,650 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 15:58:55,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:55,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560656771] [2021-10-08 15:58:55,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560656771] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:55,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:55,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 15:58:55,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711259809] [2021-10-08 15:58:55,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 15:58:55,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:55,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 15:58:55,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:58:55,654 INFO L87 Difference]: Start difference. First operand 3806 states and 13167 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:58:56,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:56,729 INFO L93 Difference]: Finished difference Result 7392 states and 26026 transitions. [2021-10-08 15:58:56,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 15:58:56,731 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 28 [2021-10-08 15:58:56,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:56,761 INFO L225 Difference]: With dead ends: 7392 [2021-10-08 15:58:56,762 INFO L226 Difference]: Without dead ends: 7358 [2021-10-08 15:58:56,762 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 375.7ms TimeCoverageRelationStatistics Valid=280, Invalid=842, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 15:58:56,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7358 states. [2021-10-08 15:58:56,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7358 to 3796. [2021-10-08 15:58:56,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3796 states, 3792 states have (on average 3.4662447257383966) internal successors, (13144), 3795 states have internal predecessors, (13144), 0 states have call successors, (0), 0 states 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 15:58:56,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3796 states to 3796 states and 13144 transitions. [2021-10-08 15:58:56,884 INFO L78 Accepts]: Start accepts. Automaton has 3796 states and 13144 transitions. Word has length 28 [2021-10-08 15:58:56,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:56,884 INFO L470 AbstractCegarLoop]: Abstraction has 3796 states and 13144 transitions. [2021-10-08 15:58:56,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:58:56,884 INFO L276 IsEmpty]: Start isEmpty. Operand 3796 states and 13144 transitions. [2021-10-08 15:58:56,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:58:56,892 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:56,892 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:56,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-10-08 15:58:56,892 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:56,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:56,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1062654317, now seen corresponding path program 2 times [2021-10-08 15:58:56,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:56,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380787950] [2021-10-08 15:58:56,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:56,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:57,027 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 15:58:57,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:57,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380787950] [2021-10-08 15:58:57,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380787950] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:57,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:57,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 15:58:57,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661283291] [2021-10-08 15:58:57,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 15:58:57,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:57,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 15:58:57,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:58:57,030 INFO L87 Difference]: Start difference. First operand 3796 states and 13144 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:58:58,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:58,158 INFO L93 Difference]: Finished difference Result 7330 states and 25722 transitions. [2021-10-08 15:58:58,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 15:58:58,159 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 28 [2021-10-08 15:58:58,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:58,183 INFO L225 Difference]: With dead ends: 7330 [2021-10-08 15:58:58,184 INFO L226 Difference]: Without dead ends: 7314 [2021-10-08 15:58:58,184 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 388.0ms TimeCoverageRelationStatistics Valid=317, Invalid=873, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 15:58:58,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7314 states. [2021-10-08 15:58:58,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7314 to 3844. [2021-10-08 15:58:58,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3844 states, 3840 states have (on average 3.4546875) internal successors, (13266), 3843 states have internal predecessors, (13266), 0 states have call successors, (0), 0 states 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 15:58:58,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3844 states to 3844 states and 13266 transitions. [2021-10-08 15:58:58,314 INFO L78 Accepts]: Start accepts. Automaton has 3844 states and 13266 transitions. Word has length 28 [2021-10-08 15:58:58,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:58,315 INFO L470 AbstractCegarLoop]: Abstraction has 3844 states and 13266 transitions. [2021-10-08 15:58:58,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:58:58,315 INFO L276 IsEmpty]: Start isEmpty. Operand 3844 states and 13266 transitions. [2021-10-08 15:58:58,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:58:58,323 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:58,323 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:58,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-10-08 15:58:58,323 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:58,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:58,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1066635379, now seen corresponding path program 4 times [2021-10-08 15:58:58,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:58,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319150519] [2021-10-08 15:58:58,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:58,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:58,466 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 15:58:58,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:58,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319150519] [2021-10-08 15:58:58,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319150519] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:58,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:58,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 15:58:58,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977957233] [2021-10-08 15:58:58,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 15:58:58,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:58,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 15:58:58,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:58:58,469 INFO L87 Difference]: Start difference. First operand 3844 states and 13266 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:58:59,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:58:59,548 INFO L93 Difference]: Finished difference Result 7364 states and 25812 transitions. [2021-10-08 15:58:59,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 15:58:59,549 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 28 [2021-10-08 15:58:59,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:58:59,576 INFO L225 Difference]: With dead ends: 7364 [2021-10-08 15:58:59,576 INFO L226 Difference]: Without dead ends: 7284 [2021-10-08 15:58:59,577 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 400.9ms TimeCoverageRelationStatistics Valid=330, Invalid=930, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 15:58:59,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7284 states. [2021-10-08 15:58:59,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7284 to 3788. [2021-10-08 15:58:59,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3788 states, 3784 states have (on average 3.4651162790697674) internal successors, (13112), 3787 states have internal predecessors, (13112), 0 states have call successors, (0), 0 states 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 15:58:59,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3788 states to 3788 states and 13112 transitions. [2021-10-08 15:58:59,726 INFO L78 Accepts]: Start accepts. Automaton has 3788 states and 13112 transitions. Word has length 28 [2021-10-08 15:58:59,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:58:59,726 INFO L470 AbstractCegarLoop]: Abstraction has 3788 states and 13112 transitions. [2021-10-08 15:58:59,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:58:59,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3788 states and 13112 transitions. [2021-10-08 15:58:59,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:58:59,736 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:58:59,736 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:58:59,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-10-08 15:58:59,736 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:58:59,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:58:59,737 INFO L82 PathProgramCache]: Analyzing trace with hash 702885971, now seen corresponding path program 3 times [2021-10-08 15:58:59,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:58:59,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648564723] [2021-10-08 15:58:59,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:58:59,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:58:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:58:59,880 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 15:58:59,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:58:59,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648564723] [2021-10-08 15:58:59,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648564723] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:58:59,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:58:59,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 15:58:59,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971962537] [2021-10-08 15:58:59,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 15:58:59,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:58:59,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 15:58:59,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:58:59,884 INFO L87 Difference]: Start difference. First operand 3788 states and 13112 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:00,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:00,871 INFO L93 Difference]: Finished difference Result 5816 states and 20665 transitions. [2021-10-08 15:59:00,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 15:59:00,872 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 28 [2021-10-08 15:59:00,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:00,893 INFO L225 Difference]: With dead ends: 5816 [2021-10-08 15:59:00,893 INFO L226 Difference]: Without dead ends: 5800 [2021-10-08 15:59:00,894 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 323.7ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 15:59:00,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5800 states. [2021-10-08 15:59:01,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5800 to 4004. [2021-10-08 15:59:01,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4004 states, 4000 states have (on average 3.4545) internal successors, (13818), 4003 states have internal predecessors, (13818), 0 states have call successors, (0), 0 states 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 15:59:01,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4004 states to 4004 states and 13818 transitions. [2021-10-08 15:59:01,038 INFO L78 Accepts]: Start accepts. Automaton has 4004 states and 13818 transitions. Word has length 28 [2021-10-08 15:59:01,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:01,038 INFO L470 AbstractCegarLoop]: Abstraction has 4004 states and 13818 transitions. [2021-10-08 15:59:01,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:01,038 INFO L276 IsEmpty]: Start isEmpty. Operand 4004 states and 13818 transitions. [2021-10-08 15:59:01,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:01,049 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:01,049 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:01,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-10-08 15:59:01,049 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:01,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:01,050 INFO L82 PathProgramCache]: Analyzing trace with hash 698904909, now seen corresponding path program 5 times [2021-10-08 15:59:01,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:01,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267089456] [2021-10-08 15:59:01,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:01,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:01,195 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 15:59:01,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:01,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267089456] [2021-10-08 15:59:01,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267089456] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:01,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:01,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 15:59:01,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762516186] [2021-10-08 15:59:01,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 15:59:01,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:01,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 15:59:01,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:59:01,198 INFO L87 Difference]: Start difference. First operand 4004 states and 13818 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:02,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:02,201 INFO L93 Difference]: Finished difference Result 5866 states and 20806 transitions. [2021-10-08 15:59:02,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 15:59:02,206 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 28 [2021-10-08 15:59:02,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:02,230 INFO L225 Difference]: With dead ends: 5866 [2021-10-08 15:59:02,230 INFO L226 Difference]: Without dead ends: 5794 [2021-10-08 15:59:02,231 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 344.9ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 15:59:02,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5794 states. [2021-10-08 15:59:02,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5794 to 3956. [2021-10-08 15:59:02,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3956 states, 3952 states have (on average 3.4595141700404857) internal successors, (13672), 3955 states have internal predecessors, (13672), 0 states have call successors, (0), 0 states 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 15:59:02,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3956 states to 3956 states and 13672 transitions. [2021-10-08 15:59:02,368 INFO L78 Accepts]: Start accepts. Automaton has 3956 states and 13672 transitions. Word has length 28 [2021-10-08 15:59:02,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:02,368 INFO L470 AbstractCegarLoop]: Abstraction has 3956 states and 13672 transitions. [2021-10-08 15:59:02,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:02,369 INFO L276 IsEmpty]: Start isEmpty. Operand 3956 states and 13672 transitions. [2021-10-08 15:59:02,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:02,378 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:02,379 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:02,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-10-08 15:59:02,379 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:02,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:02,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1541703391, now seen corresponding path program 4 times [2021-10-08 15:59:02,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:02,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997007976] [2021-10-08 15:59:02,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:02,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:02,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:02,523 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 15:59:02,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:02,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997007976] [2021-10-08 15:59:02,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997007976] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:02,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:02,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 15:59:02,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757821112] [2021-10-08 15:59:02,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 15:59:02,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:02,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 15:59:02,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:59:02,526 INFO L87 Difference]: Start difference. First operand 3956 states and 13672 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:03,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:03,495 INFO L93 Difference]: Finished difference Result 5768 states and 20511 transitions. [2021-10-08 15:59:03,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 15:59:03,495 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 28 [2021-10-08 15:59:03,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:03,518 INFO L225 Difference]: With dead ends: 5768 [2021-10-08 15:59:03,518 INFO L226 Difference]: Without dead ends: 5752 [2021-10-08 15:59:03,519 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 353.8ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 15:59:03,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5752 states. [2021-10-08 15:59:03,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5752 to 4004. [2021-10-08 15:59:03,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4004 states, 4000 states have (on average 3.4485) internal successors, (13794), 4003 states have internal predecessors, (13794), 0 states have call successors, (0), 0 states 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 15:59:03,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4004 states to 4004 states and 13794 transitions. [2021-10-08 15:59:03,652 INFO L78 Accepts]: Start accepts. Automaton has 4004 states and 13794 transitions. Word has length 28 [2021-10-08 15:59:03,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:03,653 INFO L470 AbstractCegarLoop]: Abstraction has 4004 states and 13794 transitions. [2021-10-08 15:59:03,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:03,653 INFO L276 IsEmpty]: Start isEmpty. Operand 4004 states and 13794 transitions. [2021-10-08 15:59:03,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:03,665 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:03,666 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:03,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-10-08 15:59:03,666 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:03,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:03,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1538565098, now seen corresponding path program 1 times [2021-10-08 15:59:03,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:03,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690258548] [2021-10-08 15:59:03,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:03,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:03,806 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 15:59:03,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:03,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690258548] [2021-10-08 15:59:03,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690258548] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:03,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:03,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 15:59:03,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001398361] [2021-10-08 15:59:03,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 15:59:03,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:03,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 15:59:03,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:59:03,810 INFO L87 Difference]: Start difference. First operand 4004 states and 13794 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:04,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:04,765 INFO L93 Difference]: Finished difference Result 5880 states and 20808 transitions. [2021-10-08 15:59:04,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 15:59:04,770 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 28 [2021-10-08 15:59:04,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:04,794 INFO L225 Difference]: With dead ends: 5880 [2021-10-08 15:59:04,795 INFO L226 Difference]: Without dead ends: 5802 [2021-10-08 15:59:04,795 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 333.5ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 15:59:04,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5802 states. [2021-10-08 15:59:04,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5802 to 3956. [2021-10-08 15:59:04,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3956 states, 3952 states have (on average 3.4534412955465585) internal successors, (13648), 3955 states have internal predecessors, (13648), 0 states have call successors, (0), 0 states 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 15:59:04,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3956 states to 3956 states and 13648 transitions. [2021-10-08 15:59:04,935 INFO L78 Accepts]: Start accepts. Automaton has 3956 states and 13648 transitions. Word has length 28 [2021-10-08 15:59:04,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:04,936 INFO L470 AbstractCegarLoop]: Abstraction has 3956 states and 13648 transitions. [2021-10-08 15:59:04,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:04,936 INFO L276 IsEmpty]: Start isEmpty. Operand 3956 states and 13648 transitions. [2021-10-08 15:59:04,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:04,947 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:04,947 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:04,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-10-08 15:59:04,947 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:04,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:04,948 INFO L82 PathProgramCache]: Analyzing trace with hash 2007688164, now seen corresponding path program 2 times [2021-10-08 15:59:04,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:04,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527900728] [2021-10-08 15:59:04,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:04,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:05,086 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 15:59:05,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:05,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527900728] [2021-10-08 15:59:05,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527900728] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:05,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:05,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 15:59:05,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668868169] [2021-10-08 15:59:05,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 15:59:05,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:05,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 15:59:05,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:59:05,090 INFO L87 Difference]: Start difference. First operand 3956 states and 13648 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:06,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:06,116 INFO L93 Difference]: Finished difference Result 5862 states and 20739 transitions. [2021-10-08 15:59:06,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 15:59:06,117 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 28 [2021-10-08 15:59:06,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:06,138 INFO L225 Difference]: With dead ends: 5862 [2021-10-08 15:59:06,139 INFO L226 Difference]: Without dead ends: 5820 [2021-10-08 15:59:06,139 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 354.3ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 15:59:06,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5820 states. [2021-10-08 15:59:06,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5820 to 4028. [2021-10-08 15:59:06,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4028 states, 4024 states have (on average 3.4378727634194832) internal successors, (13834), 4027 states have internal predecessors, (13834), 0 states have call successors, (0), 0 states 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 15:59:06,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4028 states to 4028 states and 13834 transitions. [2021-10-08 15:59:06,279 INFO L78 Accepts]: Start accepts. Automaton has 4028 states and 13834 transitions. Word has length 28 [2021-10-08 15:59:06,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:06,279 INFO L470 AbstractCegarLoop]: Abstraction has 4028 states and 13834 transitions. [2021-10-08 15:59:06,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:06,280 INFO L276 IsEmpty]: Start isEmpty. Operand 4028 states and 13834 transitions. [2021-10-08 15:59:06,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:06,291 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:06,291 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:06,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-10-08 15:59:06,292 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:06,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:06,292 INFO L82 PathProgramCache]: Analyzing trace with hash 2007661005, now seen corresponding path program 6 times [2021-10-08 15:59:06,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:06,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253059354] [2021-10-08 15:59:06,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:06,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:06,455 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 15:59:06,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:06,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253059354] [2021-10-08 15:59:06,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253059354] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:06,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:06,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 15:59:06,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015969615] [2021-10-08 15:59:06,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 15:59:06,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:06,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 15:59:06,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:59:06,458 INFO L87 Difference]: Start difference. First operand 4028 states and 13834 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:07,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:07,429 INFO L93 Difference]: Finished difference Result 5830 states and 20650 transitions. [2021-10-08 15:59:07,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 15:59:07,430 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 28 [2021-10-08 15:59:07,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:07,449 INFO L225 Difference]: With dead ends: 5830 [2021-10-08 15:59:07,449 INFO L226 Difference]: Without dead ends: 5650 [2021-10-08 15:59:07,450 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 363.6ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 15:59:07,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5650 states. [2021-10-08 15:59:07,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5650 to 3884. [2021-10-08 15:59:07,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3884 states, 3880 states have (on average 3.447938144329897) internal successors, (13378), 3883 states have internal predecessors, (13378), 0 states have call successors, (0), 0 states 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 15:59:07,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 13378 transitions. [2021-10-08 15:59:07,596 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 13378 transitions. Word has length 28 [2021-10-08 15:59:07,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:07,597 INFO L470 AbstractCegarLoop]: Abstraction has 3884 states and 13378 transitions. [2021-10-08 15:59:07,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:07,597 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 13378 transitions. [2021-10-08 15:59:07,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:07,607 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:07,607 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:07,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-10-08 15:59:07,607 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:07,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:07,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1787910401, now seen corresponding path program 7 times [2021-10-08 15:59:07,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:07,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200817061] [2021-10-08 15:59:07,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:07,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:07,758 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 15:59:07,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:07,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200817061] [2021-10-08 15:59:07,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200817061] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:07,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:07,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 15:59:07,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832845505] [2021-10-08 15:59:07,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 15:59:07,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:07,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 15:59:07,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:59:07,762 INFO L87 Difference]: Start difference. First operand 3884 states and 13378 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:59:08,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:08,801 INFO L93 Difference]: Finished difference Result 8404 states and 28861 transitions. [2021-10-08 15:59:08,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 15:59:08,802 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 28 [2021-10-08 15:59:08,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:08,844 INFO L225 Difference]: With dead ends: 8404 [2021-10-08 15:59:08,844 INFO L226 Difference]: Without dead ends: 8380 [2021-10-08 15:59:08,845 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 334.1ms TimeCoverageRelationStatistics Valid=246, Invalid=624, Unknown=0, NotChecked=0, Total=870 [2021-10-08 15:59:08,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8380 states. [2021-10-08 15:59:08,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8380 to 3914. [2021-10-08 15:59:08,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3914 states, 3910 states have (on average 3.4421994884910485) internal successors, (13459), 3913 states have internal predecessors, (13459), 0 states have call successors, (0), 0 states 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 15:59:08,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3914 states to 3914 states and 13459 transitions. [2021-10-08 15:59:08,993 INFO L78 Accepts]: Start accepts. Automaton has 3914 states and 13459 transitions. Word has length 28 [2021-10-08 15:59:08,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:08,993 INFO L470 AbstractCegarLoop]: Abstraction has 3914 states and 13459 transitions. [2021-10-08 15:59:08,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:59:08,993 INFO L276 IsEmpty]: Start isEmpty. Operand 3914 states and 13459 transitions. [2021-10-08 15:59:09,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:09,002 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:09,002 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:09,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-10-08 15:59:09,002 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:09,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:09,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1948474901, now seen corresponding path program 8 times [2021-10-08 15:59:09,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:09,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167502169] [2021-10-08 15:59:09,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:09,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:09,138 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 15:59:09,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:09,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167502169] [2021-10-08 15:59:09,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167502169] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:09,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:09,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 15:59:09,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838539303] [2021-10-08 15:59:09,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 15:59:09,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:09,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 15:59:09,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:59:09,140 INFO L87 Difference]: Start difference. First operand 3914 states and 13459 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:59:10,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:10,208 INFO L93 Difference]: Finished difference Result 7842 states and 27504 transitions. [2021-10-08 15:59:10,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 15:59:10,209 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 28 [2021-10-08 15:59:10,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:10,237 INFO L225 Difference]: With dead ends: 7842 [2021-10-08 15:59:10,237 INFO L226 Difference]: Without dead ends: 7800 [2021-10-08 15:59:10,238 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 388.5ms TimeCoverageRelationStatistics Valid=250, Invalid=742, Unknown=0, NotChecked=0, Total=992 [2021-10-08 15:59:10,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7800 states. [2021-10-08 15:59:10,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7800 to 3908. [2021-10-08 15:59:10,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3908 states, 3904 states have (on average 3.4431352459016393) internal successors, (13442), 3907 states have internal predecessors, (13442), 0 states have call successors, (0), 0 states 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 15:59:10,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3908 states to 3908 states and 13442 transitions. [2021-10-08 15:59:10,372 INFO L78 Accepts]: Start accepts. Automaton has 3908 states and 13442 transitions. Word has length 28 [2021-10-08 15:59:10,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:10,372 INFO L470 AbstractCegarLoop]: Abstraction has 3908 states and 13442 transitions. [2021-10-08 15:59:10,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:59:10,373 INFO L276 IsEmpty]: Start isEmpty. Operand 3908 states and 13442 transitions. [2021-10-08 15:59:10,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:10,381 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:10,381 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:10,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-10-08 15:59:10,382 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:10,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:10,382 INFO L82 PathProgramCache]: Analyzing trace with hash 296275775, now seen corresponding path program 9 times [2021-10-08 15:59:10,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:10,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088253436] [2021-10-08 15:59:10,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:10,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:10,515 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 15:59:10,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:10,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088253436] [2021-10-08 15:59:10,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088253436] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:10,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:10,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 15:59:10,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958811595] [2021-10-08 15:59:10,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 15:59:10,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:10,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 15:59:10,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:59:10,518 INFO L87 Difference]: Start difference. First operand 3908 states and 13442 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:59:11,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:11,507 INFO L93 Difference]: Finished difference Result 7418 states and 25934 transitions. [2021-10-08 15:59:11,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 15:59:11,508 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 28 [2021-10-08 15:59:11,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:11,538 INFO L225 Difference]: With dead ends: 7418 [2021-10-08 15:59:11,538 INFO L226 Difference]: Without dead ends: 7382 [2021-10-08 15:59:11,539 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 350.4ms TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2021-10-08 15:59:11,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7382 states. [2021-10-08 15:59:11,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7382 to 3998. [2021-10-08 15:59:11,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3998 states, 3994 states have (on average 3.423885828743115) internal successors, (13675), 3997 states have internal predecessors, (13675), 0 states have call successors, (0), 0 states 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 15:59:11,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 13675 transitions. [2021-10-08 15:59:11,699 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 13675 transitions. Word has length 28 [2021-10-08 15:59:11,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:11,699 INFO L470 AbstractCegarLoop]: Abstraction has 3998 states and 13675 transitions. [2021-10-08 15:59:11,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:59:11,700 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 13675 transitions. [2021-10-08 15:59:11,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:11,709 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:11,710 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:11,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-10-08 15:59:11,710 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:11,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:11,710 INFO L82 PathProgramCache]: Analyzing trace with hash 289095434, now seen corresponding path program 3 times [2021-10-08 15:59:11,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:11,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942858567] [2021-10-08 15:59:11,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:11,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:11,854 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 15:59:11,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:11,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942858567] [2021-10-08 15:59:11,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942858567] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:11,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:11,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 15:59:11,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633986824] [2021-10-08 15:59:11,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 15:59:11,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:11,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 15:59:11,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:59:11,857 INFO L87 Difference]: Start difference. First operand 3998 states and 13675 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:59:12,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:12,818 INFO L93 Difference]: Finished difference Result 7436 states and 25954 transitions. [2021-10-08 15:59:12,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 15:59:12,819 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 28 [2021-10-08 15:59:12,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:12,847 INFO L225 Difference]: With dead ends: 7436 [2021-10-08 15:59:12,847 INFO L226 Difference]: Without dead ends: 7322 [2021-10-08 15:59:12,847 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 339.9ms TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2021-10-08 15:59:12,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7322 states. [2021-10-08 15:59:12,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7322 to 3926. [2021-10-08 15:59:12,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3926 states, 3922 states have (on average 3.434727180010199) internal successors, (13471), 3925 states have internal predecessors, (13471), 0 states have call successors, (0), 0 states 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 15:59:13,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3926 states to 3926 states and 13471 transitions. [2021-10-08 15:59:13,008 INFO L78 Accepts]: Start accepts. Automaton has 3926 states and 13471 transitions. Word has length 28 [2021-10-08 15:59:13,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:13,009 INFO L470 AbstractCegarLoop]: Abstraction has 3926 states and 13471 transitions. [2021-10-08 15:59:13,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:59:13,009 INFO L276 IsEmpty]: Start isEmpty. Operand 3926 states and 13471 transitions. [2021-10-08 15:59:13,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:13,018 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:13,019 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:13,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-10-08 15:59:13,019 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:13,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:13,020 INFO L82 PathProgramCache]: Analyzing trace with hash -546543313, now seen corresponding path program 10 times [2021-10-08 15:59:13,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:13,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413234778] [2021-10-08 15:59:13,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:13,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:13,158 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 15:59:13,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:13,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413234778] [2021-10-08 15:59:13,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413234778] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:13,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:13,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 15:59:13,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643245687] [2021-10-08 15:59:13,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 15:59:13,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:13,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 15:59:13,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:59:13,162 INFO L87 Difference]: Start difference. First operand 3926 states and 13471 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:14,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:14,347 INFO L93 Difference]: Finished difference Result 8096 states and 28297 transitions. [2021-10-08 15:59:14,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 15:59:14,348 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 28 [2021-10-08 15:59:14,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:14,385 INFO L225 Difference]: With dead ends: 8096 [2021-10-08 15:59:14,386 INFO L226 Difference]: Without dead ends: 8060 [2021-10-08 15:59:14,386 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 404.7ms TimeCoverageRelationStatistics Valid=317, Invalid=873, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 15:59:14,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8060 states. [2021-10-08 15:59:14,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8060 to 3998. [2021-10-08 15:59:14,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3998 states, 3994 states have (on average 3.4193790686029044) internal successors, (13657), 3997 states have internal predecessors, (13657), 0 states have call successors, (0), 0 states 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 15:59:14,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 13657 transitions. [2021-10-08 15:59:14,587 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 13657 transitions. Word has length 28 [2021-10-08 15:59:14,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:14,587 INFO L470 AbstractCegarLoop]: Abstraction has 3998 states and 13657 transitions. [2021-10-08 15:59:14,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:14,587 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 13657 transitions. [2021-10-08 15:59:14,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:14,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:14,597 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:14,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-10-08 15:59:14,597 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:14,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:14,597 INFO L82 PathProgramCache]: Analyzing trace with hash -553723654, now seen corresponding path program 4 times [2021-10-08 15:59:14,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:14,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299867575] [2021-10-08 15:59:14,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:14,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:14,746 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 15:59:14,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:14,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299867575] [2021-10-08 15:59:14,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299867575] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:14,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:14,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 15:59:14,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523468253] [2021-10-08 15:59:14,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 15:59:14,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:14,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 15:59:14,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:59:14,750 INFO L87 Difference]: Start difference. First operand 3998 states and 13657 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:16,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:16,004 INFO L93 Difference]: Finished difference Result 8096 states and 28272 transitions. [2021-10-08 15:59:16,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 15:59:16,005 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 28 [2021-10-08 15:59:16,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:16,052 INFO L225 Difference]: With dead ends: 8096 [2021-10-08 15:59:16,053 INFO L226 Difference]: Without dead ends: 7952 [2021-10-08 15:59:16,053 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 436.6ms TimeCoverageRelationStatistics Valid=317, Invalid=873, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 15:59:16,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7952 states. [2021-10-08 15:59:16,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7952 to 3896. [2021-10-08 15:59:16,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3896 states, 3892 states have (on average 3.436793422404933) internal successors, (13376), 3895 states have internal predecessors, (13376), 0 states have call successors, (0), 0 states 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 15:59:16,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3896 states to 3896 states and 13376 transitions. [2021-10-08 15:59:16,269 INFO L78 Accepts]: Start accepts. Automaton has 3896 states and 13376 transitions. Word has length 28 [2021-10-08 15:59:16,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:16,270 INFO L470 AbstractCegarLoop]: Abstraction has 3896 states and 13376 transitions. [2021-10-08 15:59:16,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:16,270 INFO L276 IsEmpty]: Start isEmpty. Operand 3896 states and 13376 transitions. [2021-10-08 15:59:16,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:16,280 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:16,280 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:16,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-10-08 15:59:16,280 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:16,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:16,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1825644035, now seen corresponding path program 5 times [2021-10-08 15:59:16,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:16,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465761449] [2021-10-08 15:59:16,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:16,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:16,450 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 15:59:16,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:16,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465761449] [2021-10-08 15:59:16,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465761449] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:16,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:16,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-08 15:59:16,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395266083] [2021-10-08 15:59:16,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 15:59:16,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:16,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 15:59:16,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-08 15:59:16,454 INFO L87 Difference]: Start difference. First operand 3896 states and 13376 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 15:59:17,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:17,618 INFO L93 Difference]: Finished difference Result 5976 states and 21086 transitions. [2021-10-08 15:59:17,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 15:59:17,619 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 28 [2021-10-08 15:59:17,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:17,645 INFO L225 Difference]: With dead ends: 5976 [2021-10-08 15:59:17,646 INFO L226 Difference]: Without dead ends: 5960 [2021-10-08 15:59:17,646 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 452.8ms TimeCoverageRelationStatistics Valid=346, Invalid=1060, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 15:59:17,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5960 states. [2021-10-08 15:59:17,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5960 to 4088. [2021-10-08 15:59:17,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4088 states, 4084 states have (on average 3.4299706170421156) internal successors, (14008), 4087 states have internal predecessors, (14008), 0 states have call successors, (0), 0 states 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 15:59:17,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 14008 transitions. [2021-10-08 15:59:17,818 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 14008 transitions. Word has length 28 [2021-10-08 15:59:17,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:17,818 INFO L470 AbstractCegarLoop]: Abstraction has 4088 states and 14008 transitions. [2021-10-08 15:59:17,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 15:59:17,818 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 14008 transitions. [2021-10-08 15:59:17,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:17,830 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:17,830 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:17,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-10-08 15:59:17,831 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:17,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:17,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1829625097, now seen corresponding path program 11 times [2021-10-08 15:59:17,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:17,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116825343] [2021-10-08 15:59:17,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:17,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:18,059 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 15:59:18,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:18,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116825343] [2021-10-08 15:59:18,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116825343] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:18,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:18,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-08 15:59:18,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362200944] [2021-10-08 15:59:18,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 15:59:18,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:18,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 15:59:18,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-08 15:59:18,063 INFO L87 Difference]: Start difference. First operand 4088 states and 14008 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 15:59:19,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:19,278 INFO L93 Difference]: Finished difference Result 6010 states and 21195 transitions. [2021-10-08 15:59:19,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 15:59:19,279 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 28 [2021-10-08 15:59:19,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:19,302 INFO L225 Difference]: With dead ends: 6010 [2021-10-08 15:59:19,302 INFO L226 Difference]: Without dead ends: 5938 [2021-10-08 15:59:19,303 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 465.9ms TimeCoverageRelationStatistics Valid=346, Invalid=1060, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 15:59:19,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5938 states. [2021-10-08 15:59:19,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5938 to 4040. [2021-10-08 15:59:19,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4040 states, 4036 states have (on average 3.4345887016848367) internal successors, (13862), 4039 states have internal predecessors, (13862), 0 states have call successors, (0), 0 states 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 15:59:19,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4040 states to 4040 states and 13862 transitions. [2021-10-08 15:59:19,451 INFO L78 Accepts]: Start accepts. Automaton has 4040 states and 13862 transitions. Word has length 28 [2021-10-08 15:59:19,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:19,451 INFO L470 AbstractCegarLoop]: Abstraction has 4040 states and 13862 transitions. [2021-10-08 15:59:19,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 15:59:19,453 INFO L276 IsEmpty]: Start isEmpty. Operand 4040 states and 13862 transitions. [2021-10-08 15:59:19,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:19,462 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:19,463 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:19,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-10-08 15:59:19,463 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:19,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:19,463 INFO L82 PathProgramCache]: Analyzing trace with hash -986826615, now seen corresponding path program 6 times [2021-10-08 15:59:19,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:19,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984011411] [2021-10-08 15:59:19,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:19,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:19,626 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 15:59:19,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:19,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984011411] [2021-10-08 15:59:19,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984011411] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:19,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:19,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-08 15:59:19,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610117961] [2021-10-08 15:59:19,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 15:59:19,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:19,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 15:59:19,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-08 15:59:19,629 INFO L87 Difference]: Start difference. First operand 4040 states and 13862 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 15:59:20,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:20,841 INFO L93 Difference]: Finished difference Result 5930 states and 20941 transitions. [2021-10-08 15:59:20,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 15:59:20,842 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 28 [2021-10-08 15:59:20,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:20,865 INFO L225 Difference]: With dead ends: 5930 [2021-10-08 15:59:20,865 INFO L226 Difference]: Without dead ends: 5914 [2021-10-08 15:59:20,866 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 460.7ms TimeCoverageRelationStatistics Valid=346, Invalid=1060, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 15:59:20,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5914 states. [2021-10-08 15:59:20,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5914 to 4088. [2021-10-08 15:59:20,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4088 states, 4084 states have (on average 3.42409402546523) internal successors, (13984), 4087 states have internal predecessors, (13984), 0 states have call successors, (0), 0 states 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 15:59:21,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 13984 transitions. [2021-10-08 15:59:21,016 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 13984 transitions. Word has length 28 [2021-10-08 15:59:21,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:21,017 INFO L470 AbstractCegarLoop]: Abstraction has 4088 states and 13984 transitions. [2021-10-08 15:59:21,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 15:59:21,017 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 13984 transitions. [2021-10-08 15:59:21,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:21,027 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:21,027 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:21,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-10-08 15:59:21,028 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:21,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:21,029 INFO L82 PathProgramCache]: Analyzing trace with hash -989964908, now seen corresponding path program 5 times [2021-10-08 15:59:21,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:21,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777588317] [2021-10-08 15:59:21,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:21,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:21,205 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 15:59:21,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:21,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777588317] [2021-10-08 15:59:21,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777588317] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:21,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:21,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-08 15:59:21,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991855449] [2021-10-08 15:59:21,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 15:59:21,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:21,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 15:59:21,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-08 15:59:21,209 INFO L87 Difference]: Start difference. First operand 4088 states and 13984 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 15:59:22,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:22,386 INFO L93 Difference]: Finished difference Result 6000 states and 21127 transitions. [2021-10-08 15:59:22,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 15:59:22,387 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 28 [2021-10-08 15:59:22,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:22,409 INFO L225 Difference]: With dead ends: 6000 [2021-10-08 15:59:22,410 INFO L226 Difference]: Without dead ends: 5922 [2021-10-08 15:59:22,410 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 460.5ms TimeCoverageRelationStatistics Valid=346, Invalid=1060, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 15:59:22,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5922 states. [2021-10-08 15:59:22,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5922 to 4040. [2021-10-08 15:59:22,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4040 states, 4036 states have (on average 3.4286422200198214) internal successors, (13838), 4039 states have internal predecessors, (13838), 0 states have call successors, (0), 0 states 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 15:59:22,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4040 states to 4040 states and 13838 transitions. [2021-10-08 15:59:22,529 INFO L78 Accepts]: Start accepts. Automaton has 4040 states and 13838 transitions. Word has length 28 [2021-10-08 15:59:22,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:22,529 INFO L470 AbstractCegarLoop]: Abstraction has 4040 states and 13838 transitions. [2021-10-08 15:59:22,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 15:59:22,529 INFO L276 IsEmpty]: Start isEmpty. Operand 4040 states and 13838 transitions. [2021-10-08 15:59:22,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:22,539 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:22,539 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:22,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-10-08 15:59:22,540 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:22,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:22,540 INFO L82 PathProgramCache]: Analyzing trace with hash -520841842, now seen corresponding path program 6 times [2021-10-08 15:59:22,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:22,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972888660] [2021-10-08 15:59:22,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:22,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:22,694 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 15:59:22,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:22,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972888660] [2021-10-08 15:59:22,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972888660] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:22,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:22,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-08 15:59:22,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304028390] [2021-10-08 15:59:22,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 15:59:22,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:22,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 15:59:22,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-08 15:59:22,696 INFO L87 Difference]: Start difference. First operand 4040 states and 13838 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 15:59:23,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:23,760 INFO L93 Difference]: Finished difference Result 6028 states and 21169 transitions. [2021-10-08 15:59:23,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 15:59:23,761 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 28 [2021-10-08 15:59:23,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:23,783 INFO L225 Difference]: With dead ends: 6028 [2021-10-08 15:59:23,783 INFO L226 Difference]: Without dead ends: 5986 [2021-10-08 15:59:23,783 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 394.9ms TimeCoverageRelationStatistics Valid=346, Invalid=1060, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 15:59:23,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5986 states. [2021-10-08 15:59:23,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5986 to 4112. [2021-10-08 15:59:23,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4112 states, 4108 states have (on average 3.4138266796494645) internal successors, (14024), 4111 states have internal predecessors, (14024), 0 states have call successors, (0), 0 states 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 15:59:23,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4112 states to 4112 states and 14024 transitions. [2021-10-08 15:59:23,912 INFO L78 Accepts]: Start accepts. Automaton has 4112 states and 14024 transitions. Word has length 28 [2021-10-08 15:59:23,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:23,913 INFO L470 AbstractCegarLoop]: Abstraction has 4112 states and 14024 transitions. [2021-10-08 15:59:23,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 15:59:23,913 INFO L276 IsEmpty]: Start isEmpty. Operand 4112 states and 14024 transitions. [2021-10-08 15:59:23,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:23,923 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:23,923 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:23,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-10-08 15:59:23,923 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:23,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:23,924 INFO L82 PathProgramCache]: Analyzing trace with hash -520869001, now seen corresponding path program 12 times [2021-10-08 15:59:23,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:23,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558624374] [2021-10-08 15:59:23,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:23,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:24,060 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 15:59:24,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:24,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558624374] [2021-10-08 15:59:24,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558624374] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:24,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:24,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-08 15:59:24,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354914514] [2021-10-08 15:59:24,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 15:59:24,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:24,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 15:59:24,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-08 15:59:24,063 INFO L87 Difference]: Start difference. First operand 4112 states and 14024 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 15:59:25,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:25,155 INFO L93 Difference]: Finished difference Result 5974 states and 21029 transitions. [2021-10-08 15:59:25,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 15:59:25,155 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 28 [2021-10-08 15:59:25,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:25,174 INFO L225 Difference]: With dead ends: 5974 [2021-10-08 15:59:25,175 INFO L226 Difference]: Without dead ends: 5602 [2021-10-08 15:59:25,175 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 398.8ms TimeCoverageRelationStatistics Valid=346, Invalid=1060, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 15:59:25,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5602 states. [2021-10-08 15:59:25,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5602 to 3872. [2021-10-08 15:59:25,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3872 states, 3868 states have (on average 3.422957600827301) internal successors, (13240), 3871 states have internal predecessors, (13240), 0 states have call successors, (0), 0 states 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 15:59:25,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3872 states to 3872 states and 13240 transitions. [2021-10-08 15:59:25,285 INFO L78 Accepts]: Start accepts. Automaton has 3872 states and 13240 transitions. Word has length 28 [2021-10-08 15:59:25,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:25,286 INFO L470 AbstractCegarLoop]: Abstraction has 3872 states and 13240 transitions. [2021-10-08 15:59:25,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 15:59:25,286 INFO L276 IsEmpty]: Start isEmpty. Operand 3872 states and 13240 transitions. [2021-10-08 15:59:25,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:25,294 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:25,294 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:25,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-10-08 15:59:25,294 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:25,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:25,295 INFO L82 PathProgramCache]: Analyzing trace with hash 416139743, now seen corresponding path program 7 times [2021-10-08 15:59:25,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:25,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132637545] [2021-10-08 15:59:25,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:25,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:25,422 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 15:59:25,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:25,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132637545] [2021-10-08 15:59:25,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132637545] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:25,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:25,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 15:59:25,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326901049] [2021-10-08 15:59:25,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 15:59:25,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:25,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 15:59:25,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:59:25,424 INFO L87 Difference]: Start difference. First operand 3872 states and 13240 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:59:26,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:26,304 INFO L93 Difference]: Finished difference Result 7122 states and 24722 transitions. [2021-10-08 15:59:26,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 15:59:26,305 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 28 [2021-10-08 15:59:26,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:26,330 INFO L225 Difference]: With dead ends: 7122 [2021-10-08 15:59:26,331 INFO L226 Difference]: Without dead ends: 7106 [2021-10-08 15:59:26,331 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 313.2ms TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2021-10-08 15:59:26,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7106 states. [2021-10-08 15:59:26,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7106 to 4008. [2021-10-08 15:59:26,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4008 states, 4004 states have (on average 3.417082917082917) internal successors, (13682), 4007 states have internal predecessors, (13682), 0 states have call successors, (0), 0 states 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 15:59:26,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 13682 transitions. [2021-10-08 15:59:26,463 INFO L78 Accepts]: Start accepts. Automaton has 4008 states and 13682 transitions. Word has length 28 [2021-10-08 15:59:26,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:26,463 INFO L470 AbstractCegarLoop]: Abstraction has 4008 states and 13682 transitions. [2021-10-08 15:59:26,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:59:26,464 INFO L276 IsEmpty]: Start isEmpty. Operand 4008 states and 13682 transitions. [2021-10-08 15:59:26,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:26,472 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:26,472 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:26,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-10-08 15:59:26,472 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:26,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:26,473 INFO L82 PathProgramCache]: Analyzing trace with hash 412158681, now seen corresponding path program 13 times [2021-10-08 15:59:26,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:26,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911674519] [2021-10-08 15:59:26,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:26,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:26,581 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 15:59:26,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:26,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911674519] [2021-10-08 15:59:26,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911674519] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:26,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:26,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 15:59:26,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302312401] [2021-10-08 15:59:26,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 15:59:26,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:26,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 15:59:26,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:59:26,582 INFO L87 Difference]: Start difference. First operand 4008 states and 13682 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:59:27,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:27,532 INFO L93 Difference]: Finished difference Result 7170 states and 24851 transitions. [2021-10-08 15:59:27,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 15:59:27,532 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 28 [2021-10-08 15:59:27,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:27,556 INFO L225 Difference]: With dead ends: 7170 [2021-10-08 15:59:27,557 INFO L226 Difference]: Without dead ends: 7122 [2021-10-08 15:59:27,557 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 320.3ms TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2021-10-08 15:59:27,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7122 states. [2021-10-08 15:59:27,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7122 to 3978. [2021-10-08 15:59:27,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3978 states, 3974 states have (on average 3.4240060392551586) internal successors, (13607), 3977 states have internal predecessors, (13607), 0 states have call successors, (0), 0 states 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 15:59:27,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3978 states to 3978 states and 13607 transitions. [2021-10-08 15:59:27,708 INFO L78 Accepts]: Start accepts. Automaton has 3978 states and 13607 transitions. Word has length 28 [2021-10-08 15:59:27,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:27,709 INFO L470 AbstractCegarLoop]: Abstraction has 3978 states and 13607 transitions. [2021-10-08 15:59:27,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:59:27,709 INFO L276 IsEmpty]: Start isEmpty. Operand 3978 states and 13607 transitions. [2021-10-08 15:59:27,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:27,719 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:27,719 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:27,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-10-08 15:59:27,719 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:27,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:27,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1420425087, now seen corresponding path program 14 times [2021-10-08 15:59:27,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:27,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49689478] [2021-10-08 15:59:27,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:27,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:27,853 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 15:59:27,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:27,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49689478] [2021-10-08 15:59:27,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49689478] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:27,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:27,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 15:59:27,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522346849] [2021-10-08 15:59:27,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 15:59:27,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:27,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 15:59:27,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:59:27,856 INFO L87 Difference]: Start difference. First operand 3978 states and 13607 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:59:28,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:28,809 INFO L93 Difference]: Finished difference Result 8954 states and 30500 transitions. [2021-10-08 15:59:28,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 15:59:28,810 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 28 [2021-10-08 15:59:28,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:28,837 INFO L225 Difference]: With dead ends: 8954 [2021-10-08 15:59:28,838 INFO L226 Difference]: Without dead ends: 8930 [2021-10-08 15:59:28,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 319.3ms TimeCoverageRelationStatistics Valid=259, Invalid=671, Unknown=0, NotChecked=0, Total=930 [2021-10-08 15:59:28,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8930 states. [2021-10-08 15:59:28,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8930 to 3980. [2021-10-08 15:59:28,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3980 states, 3976 states have (on average 3.4230382293762576) internal successors, (13610), 3979 states have internal predecessors, (13610), 0 states have call successors, (0), 0 states 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 15:59:28,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3980 states to 3980 states and 13610 transitions. [2021-10-08 15:59:28,992 INFO L78 Accepts]: Start accepts. Automaton has 3980 states and 13610 transitions. Word has length 28 [2021-10-08 15:59:28,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:28,992 INFO L470 AbstractCegarLoop]: Abstraction has 3980 states and 13610 transitions. [2021-10-08 15:59:28,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:59:28,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3980 states and 13610 transitions. [2021-10-08 15:59:29,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:29,001 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:29,001 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:29,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-10-08 15:59:29,002 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:29,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:29,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1298877807, now seen corresponding path program 15 times [2021-10-08 15:59:29,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:29,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967039372] [2021-10-08 15:59:29,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:29,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:29,130 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 15:59:29,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:29,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967039372] [2021-10-08 15:59:29,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967039372] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:29,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:29,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 15:59:29,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853212262] [2021-10-08 15:59:29,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 15:59:29,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:29,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 15:59:29,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:59:29,133 INFO L87 Difference]: Start difference. First operand 3980 states and 13610 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:59:30,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:30,225 INFO L93 Difference]: Finished difference Result 7708 states and 26846 transitions. [2021-10-08 15:59:30,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 15:59:30,226 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 28 [2021-10-08 15:59:30,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:30,257 INFO L225 Difference]: With dead ends: 7708 [2021-10-08 15:59:30,257 INFO L226 Difference]: Without dead ends: 7674 [2021-10-08 15:59:30,258 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 392.6ms TimeCoverageRelationStatistics Valid=280, Invalid=842, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 15:59:30,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7674 states. [2021-10-08 15:59:30,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7674 to 3970. [2021-10-08 15:59:30,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3970 states, 3966 states have (on average 3.425869894099849) internal successors, (13587), 3969 states have internal predecessors, (13587), 0 states have call successors, (0), 0 states 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 15:59:30,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3970 states to 3970 states and 13587 transitions. [2021-10-08 15:59:30,402 INFO L78 Accepts]: Start accepts. Automaton has 3970 states and 13587 transitions. Word has length 28 [2021-10-08 15:59:30,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:30,402 INFO L470 AbstractCegarLoop]: Abstraction has 3970 states and 13587 transitions. [2021-10-08 15:59:30,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:59:30,403 INFO L276 IsEmpty]: Start isEmpty. Operand 3970 states and 13587 transitions. [2021-10-08 15:59:30,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:30,411 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:30,411 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:30,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-10-08 15:59:30,411 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:30,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:30,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1422707937, now seen corresponding path program 8 times [2021-10-08 15:59:30,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:30,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788219309] [2021-10-08 15:59:30,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:30,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:30,541 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 15:59:30,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:30,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788219309] [2021-10-08 15:59:30,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788219309] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:30,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:30,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 15:59:30,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667283232] [2021-10-08 15:59:30,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 15:59:30,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:30,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 15:59:30,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:59:30,543 INFO L87 Difference]: Start difference. First operand 3970 states and 13587 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:31,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:31,590 INFO L93 Difference]: Finished difference Result 7440 states and 25779 transitions. [2021-10-08 15:59:31,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 15:59:31,590 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 28 [2021-10-08 15:59:31,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:31,616 INFO L225 Difference]: With dead ends: 7440 [2021-10-08 15:59:31,616 INFO L226 Difference]: Without dead ends: 7424 [2021-10-08 15:59:31,616 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 385.3ms TimeCoverageRelationStatistics Valid=317, Invalid=873, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 15:59:31,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7424 states. [2021-10-08 15:59:31,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7424 to 4018. [2021-10-08 15:59:31,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4018 states, 4014 states have (on average 3.415296462381664) internal successors, (13709), 4017 states have internal predecessors, (13709), 0 states have call successors, (0), 0 states 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 15:59:31,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4018 states to 4018 states and 13709 transitions. [2021-10-08 15:59:31,763 INFO L78 Accepts]: Start accepts. Automaton has 4018 states and 13709 transitions. Word has length 28 [2021-10-08 15:59:31,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:31,764 INFO L470 AbstractCegarLoop]: Abstraction has 4018 states and 13709 transitions. [2021-10-08 15:59:31,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:31,764 INFO L276 IsEmpty]: Start isEmpty. Operand 4018 states and 13709 transitions. [2021-10-08 15:59:31,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:31,774 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:31,774 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:31,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-10-08 15:59:31,774 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:31,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:31,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1426688999, now seen corresponding path program 16 times [2021-10-08 15:59:31,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:31,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116950663] [2021-10-08 15:59:31,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:31,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:31,925 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 15:59:31,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:31,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116950663] [2021-10-08 15:59:31,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116950663] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:31,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:31,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 15:59:31,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088837732] [2021-10-08 15:59:31,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 15:59:31,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:31,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 15:59:31,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:59:31,928 INFO L87 Difference]: Start difference. First operand 4018 states and 13709 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:32,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:32,963 INFO L93 Difference]: Finished difference Result 7464 states and 25844 transitions. [2021-10-08 15:59:32,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 15:59:32,964 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 28 [2021-10-08 15:59:32,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:32,990 INFO L225 Difference]: With dead ends: 7464 [2021-10-08 15:59:32,991 INFO L226 Difference]: Without dead ends: 7384 [2021-10-08 15:59:32,991 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 399.5ms TimeCoverageRelationStatistics Valid=330, Invalid=930, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 15:59:33,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7384 states. [2021-10-08 15:59:33,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7384 to 3962. [2021-10-08 15:59:33,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3962 states, 3958 states have (on average 3.4247094492167762) internal successors, (13555), 3961 states have internal predecessors, (13555), 0 states have call successors, (0), 0 states 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 15:59:33,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3962 states to 3962 states and 13555 transitions. [2021-10-08 15:59:33,125 INFO L78 Accepts]: Start accepts. Automaton has 3962 states and 13555 transitions. Word has length 28 [2021-10-08 15:59:33,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:33,125 INFO L470 AbstractCegarLoop]: Abstraction has 3962 states and 13555 transitions. [2021-10-08 15:59:33,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:33,125 INFO L276 IsEmpty]: Start isEmpty. Operand 3962 states and 13555 transitions. [2021-10-08 15:59:33,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:33,134 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:33,134 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:33,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-10-08 15:59:33,134 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:33,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:33,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1143962271, now seen corresponding path program 9 times [2021-10-08 15:59:33,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:33,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502476197] [2021-10-08 15:59:33,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:33,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:33,269 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 15:59:33,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:33,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502476197] [2021-10-08 15:59:33,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502476197] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:33,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:33,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 15:59:33,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7246735] [2021-10-08 15:59:33,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 15:59:33,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:33,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 15:59:33,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:59:33,272 INFO L87 Difference]: Start difference. First operand 3962 states and 13555 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:34,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:34,214 INFO L93 Difference]: Finished difference Result 5962 states and 20982 transitions. [2021-10-08 15:59:34,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 15:59:34,215 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 28 [2021-10-08 15:59:34,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:34,234 INFO L225 Difference]: With dead ends: 5962 [2021-10-08 15:59:34,234 INFO L226 Difference]: Without dead ends: 5946 [2021-10-08 15:59:34,236 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 331.6ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 15:59:34,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5946 states. [2021-10-08 15:59:34,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5946 to 4130. [2021-10-08 15:59:34,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4130 states, 4126 states have (on average 3.419049927290354) internal successors, (14107), 4129 states have internal predecessors, (14107), 0 states have call successors, (0), 0 states 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 15:59:34,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 14107 transitions. [2021-10-08 15:59:34,360 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 14107 transitions. Word has length 28 [2021-10-08 15:59:34,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:34,360 INFO L470 AbstractCegarLoop]: Abstraction has 4130 states and 14107 transitions. [2021-10-08 15:59:34,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:34,361 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 14107 transitions. [2021-10-08 15:59:34,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:34,371 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:34,371 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:34,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-10-08 15:59:34,371 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:34,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:34,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1139981209, now seen corresponding path program 17 times [2021-10-08 15:59:34,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:34,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196706129] [2021-10-08 15:59:34,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:34,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:34,492 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 15:59:34,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:34,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196706129] [2021-10-08 15:59:34,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196706129] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:34,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:34,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 15:59:34,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985860040] [2021-10-08 15:59:34,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 15:59:34,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:34,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 15:59:34,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:59:34,495 INFO L87 Difference]: Start difference. First operand 4130 states and 14107 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:35,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:35,435 INFO L93 Difference]: Finished difference Result 6026 states and 21163 transitions. [2021-10-08 15:59:35,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 15:59:35,436 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 28 [2021-10-08 15:59:35,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:35,456 INFO L225 Difference]: With dead ends: 6026 [2021-10-08 15:59:35,456 INFO L226 Difference]: Without dead ends: 5954 [2021-10-08 15:59:35,457 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 331.7ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 15:59:35,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5954 states. [2021-10-08 15:59:35,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5954 to 4082. [2021-10-08 15:59:35,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4082 states, 4078 states have (on average 3.42349190779794) internal successors, (13961), 4081 states have internal predecessors, (13961), 0 states have call successors, (0), 0 states 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 15:59:35,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4082 states to 4082 states and 13961 transitions. [2021-10-08 15:59:35,577 INFO L78 Accepts]: Start accepts. Automaton has 4082 states and 13961 transitions. Word has length 28 [2021-10-08 15:59:35,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:35,578 INFO L470 AbstractCegarLoop]: Abstraction has 4082 states and 13961 transitions. [2021-10-08 15:59:35,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:35,578 INFO L276 IsEmpty]: Start isEmpty. Operand 4082 states and 13961 transitions. [2021-10-08 15:59:35,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:35,588 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:35,588 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:35,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-10-08 15:59:35,588 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:35,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:35,589 INFO L82 PathProgramCache]: Analyzing trace with hash 226064863, now seen corresponding path program 10 times [2021-10-08 15:59:35,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:35,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260900632] [2021-10-08 15:59:35,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:35,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:35,719 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 15:59:35,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:35,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260900632] [2021-10-08 15:59:35,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260900632] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:35,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:35,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 15:59:35,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453347105] [2021-10-08 15:59:35,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 15:59:35,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:35,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 15:59:35,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:59:35,721 INFO L87 Difference]: Start difference. First operand 4082 states and 13961 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:36,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:36,684 INFO L93 Difference]: Finished difference Result 5914 states and 20828 transitions. [2021-10-08 15:59:36,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 15:59:36,685 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 28 [2021-10-08 15:59:36,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:36,704 INFO L225 Difference]: With dead ends: 5914 [2021-10-08 15:59:36,705 INFO L226 Difference]: Without dead ends: 5898 [2021-10-08 15:59:36,705 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 330.0ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 15:59:36,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5898 states. [2021-10-08 15:59:36,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5898 to 4130. [2021-10-08 15:59:36,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4130 states, 4126 states have (on average 3.413233155598643) internal successors, (14083), 4129 states have internal predecessors, (14083), 0 states have call successors, (0), 0 states 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 15:59:36,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 14083 transitions. [2021-10-08 15:59:36,824 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 14083 transitions. Word has length 28 [2021-10-08 15:59:36,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:36,824 INFO L470 AbstractCegarLoop]: Abstraction has 4130 states and 14083 transitions. [2021-10-08 15:59:36,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:36,825 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 14083 transitions. [2021-10-08 15:59:36,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:36,834 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:36,834 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:36,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-10-08 15:59:36,835 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:36,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:36,835 INFO L82 PathProgramCache]: Analyzing trace with hash 220300202, now seen corresponding path program 1 times [2021-10-08 15:59:36,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:36,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786184572] [2021-10-08 15:59:36,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:36,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:36,962 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 15:59:36,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:36,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786184572] [2021-10-08 15:59:36,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786184572] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:36,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:36,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 15:59:36,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475481391] [2021-10-08 15:59:36,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 15:59:36,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:36,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 15:59:36,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:59:36,965 INFO L87 Difference]: Start difference. First operand 4130 states and 14083 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:37,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:37,905 INFO L93 Difference]: Finished difference Result 5986 states and 21031 transitions. [2021-10-08 15:59:37,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 15:59:37,906 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 28 [2021-10-08 15:59:37,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:37,932 INFO L225 Difference]: With dead ends: 5986 [2021-10-08 15:59:37,933 INFO L226 Difference]: Without dead ends: 5920 [2021-10-08 15:59:37,933 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 330.9ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 15:59:37,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5920 states. [2021-10-08 15:59:38,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5920 to 4082. [2021-10-08 15:59:38,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4082 states, 4078 states have (on average 3.417606669936243) internal successors, (13937), 4081 states have internal predecessors, (13937), 0 states have call successors, (0), 0 states 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 15:59:38,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4082 states to 4082 states and 13937 transitions. [2021-10-08 15:59:38,091 INFO L78 Accepts]: Start accepts. Automaton has 4082 states and 13937 transitions. Word has length 28 [2021-10-08 15:59:38,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:38,091 INFO L470 AbstractCegarLoop]: Abstraction has 4082 states and 13937 transitions. [2021-10-08 15:59:38,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:38,092 INFO L276 IsEmpty]: Start isEmpty. Operand 4082 states and 13937 transitions. [2021-10-08 15:59:38,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:38,102 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:38,102 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:38,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-10-08 15:59:38,102 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:38,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:38,103 INFO L82 PathProgramCache]: Analyzing trace with hash 689480787, now seen corresponding path program 18 times [2021-10-08 15:59:38,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:38,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561780222] [2021-10-08 15:59:38,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:38,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:38,258 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 15:59:38,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:38,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561780222] [2021-10-08 15:59:38,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561780222] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:38,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:38,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 15:59:38,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240740525] [2021-10-08 15:59:38,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 15:59:38,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:38,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 15:59:38,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:59:38,262 INFO L87 Difference]: Start difference. First operand 4082 states and 13937 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:39,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:39,202 INFO L93 Difference]: Finished difference Result 5996 states and 21038 transitions. [2021-10-08 15:59:39,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 15:59:39,203 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 28 [2021-10-08 15:59:39,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:39,230 INFO L225 Difference]: With dead ends: 5996 [2021-10-08 15:59:39,230 INFO L226 Difference]: Without dead ends: 5966 [2021-10-08 15:59:39,231 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 346.9ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 15:59:39,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5966 states. [2021-10-08 15:59:39,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5966 to 4136. [2021-10-08 15:59:39,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4136 states, 4132 states have (on average 3.4063407550822844) internal successors, (14075), 4135 states have internal predecessors, (14075), 0 states have call successors, (0), 0 states 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 15:59:39,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4136 states to 4136 states and 14075 transitions. [2021-10-08 15:59:39,356 INFO L78 Accepts]: Start accepts. Automaton has 4136 states and 14075 transitions. Word has length 28 [2021-10-08 15:59:39,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:39,356 INFO L470 AbstractCegarLoop]: Abstraction has 4136 states and 14075 transitions. [2021-10-08 15:59:39,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:39,357 INFO L276 IsEmpty]: Start isEmpty. Operand 4136 states and 14075 transitions. [2021-10-08 15:59:39,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:39,367 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:39,367 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:39,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-10-08 15:59:39,367 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:39,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:39,368 INFO L82 PathProgramCache]: Analyzing trace with hash 689423268, now seen corresponding path program 2 times [2021-10-08 15:59:39,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:39,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240786692] [2021-10-08 15:59:39,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:39,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:39,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:39,496 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 15:59:39,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:39,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240786692] [2021-10-08 15:59:39,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240786692] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:39,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:39,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 15:59:39,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716319294] [2021-10-08 15:59:39,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 15:59:39,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:39,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 15:59:39,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:59:39,500 INFO L87 Difference]: Start difference. First operand 4136 states and 14075 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:40,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:40,442 INFO L93 Difference]: Finished difference Result 5944 states and 20889 transitions. [2021-10-08 15:59:40,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 15:59:40,443 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 28 [2021-10-08 15:59:40,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:40,464 INFO L225 Difference]: With dead ends: 5944 [2021-10-08 15:59:40,464 INFO L226 Difference]: Without dead ends: 5794 [2021-10-08 15:59:40,464 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 334.2ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 15:59:40,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5794 states. [2021-10-08 15:59:40,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5794 to 4010. [2021-10-08 15:59:40,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4010 states, 4006 states have (on average 3.41163255117324) internal successors, (13667), 4009 states have internal predecessors, (13667), 0 states have call successors, (0), 0 states 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 15:59:40,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4010 states to 4010 states and 13667 transitions. [2021-10-08 15:59:40,590 INFO L78 Accepts]: Start accepts. Automaton has 4010 states and 13667 transitions. Word has length 28 [2021-10-08 15:59:40,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:40,591 INFO L470 AbstractCegarLoop]: Abstraction has 4010 states and 13667 transitions. [2021-10-08 15:59:40,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:40,591 INFO L276 IsEmpty]: Start isEmpty. Operand 4010 states and 13667 transitions. [2021-10-08 15:59:40,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:40,599 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:40,599 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:40,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-10-08 15:59:40,600 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:40,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:40,600 INFO L82 PathProgramCache]: Analyzing trace with hash -582192449, now seen corresponding path program 19 times [2021-10-08 15:59:40,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:40,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026719067] [2021-10-08 15:59:40,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:40,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:40,728 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 15:59:40,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:40,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026719067] [2021-10-08 15:59:40,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026719067] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:40,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:40,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 15:59:40,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97216333] [2021-10-08 15:59:40,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 15:59:40,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:40,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 15:59:40,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:59:40,731 INFO L87 Difference]: Start difference. First operand 4010 states and 13667 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:59:41,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:41,723 INFO L93 Difference]: Finished difference Result 8734 states and 29687 transitions. [2021-10-08 15:59:41,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 15:59:41,730 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 28 [2021-10-08 15:59:41,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:41,772 INFO L225 Difference]: With dead ends: 8734 [2021-10-08 15:59:41,772 INFO L226 Difference]: Without dead ends: 8710 [2021-10-08 15:59:41,773 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 319.8ms TimeCoverageRelationStatistics Valid=246, Invalid=624, Unknown=0, NotChecked=0, Total=870 [2021-10-08 15:59:41,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8710 states. [2021-10-08 15:59:41,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8710 to 4032. [2021-10-08 15:59:41,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4032 states, 4028 states have (on average 3.407646474677259) internal successors, (13726), 4031 states have internal predecessors, (13726), 0 states have call successors, (0), 0 states 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 15:59:41,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4032 states to 4032 states and 13726 transitions. [2021-10-08 15:59:41,967 INFO L78 Accepts]: Start accepts. Automaton has 4032 states and 13726 transitions. Word has length 28 [2021-10-08 15:59:41,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:41,967 INFO L470 AbstractCegarLoop]: Abstraction has 4032 states and 13726 transitions. [2021-10-08 15:59:41,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:59:41,968 INFO L276 IsEmpty]: Start isEmpty. Operand 4032 states and 13726 transitions. [2021-10-08 15:59:41,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:41,978 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:41,978 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:41,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-10-08 15:59:41,978 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:41,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:41,979 INFO L82 PathProgramCache]: Analyzing trace with hash -716251949, now seen corresponding path program 20 times [2021-10-08 15:59:41,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:41,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990624997] [2021-10-08 15:59:41,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:41,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:42,129 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 15:59:42,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:42,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990624997] [2021-10-08 15:59:42,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990624997] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:42,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:42,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 15:59:42,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860699674] [2021-10-08 15:59:42,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 15:59:42,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:42,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 15:59:42,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:59:42,132 INFO L87 Difference]: Start difference. First operand 4032 states and 13726 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:59:43,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:43,180 INFO L93 Difference]: Finished difference Result 7866 states and 27374 transitions. [2021-10-08 15:59:43,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 15:59:43,181 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 28 [2021-10-08 15:59:43,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:43,214 INFO L225 Difference]: With dead ends: 7866 [2021-10-08 15:59:43,214 INFO L226 Difference]: Without dead ends: 7832 [2021-10-08 15:59:43,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 392.4ms TimeCoverageRelationStatistics Valid=250, Invalid=742, Unknown=0, NotChecked=0, Total=992 [2021-10-08 15:59:43,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7832 states. [2021-10-08 15:59:43,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7832 to 4028. [2021-10-08 15:59:43,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4028 states, 4024 states have (on average 3.408300198807157) internal successors, (13715), 4027 states have internal predecessors, (13715), 0 states have call successors, (0), 0 states 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 15:59:43,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4028 states to 4028 states and 13715 transitions. [2021-10-08 15:59:43,359 INFO L78 Accepts]: Start accepts. Automaton has 4028 states and 13715 transitions. Word has length 28 [2021-10-08 15:59:43,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:43,359 INFO L470 AbstractCegarLoop]: Abstraction has 4028 states and 13715 transitions. [2021-10-08 15:59:43,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:59:43,359 INFO L276 IsEmpty]: Start isEmpty. Operand 4028 states and 13715 transitions. [2021-10-08 15:59:43,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:43,370 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:43,370 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:43,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-10-08 15:59:43,371 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:43,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:43,371 INFO L82 PathProgramCache]: Analyzing trace with hash -937302343, now seen corresponding path program 21 times [2021-10-08 15:59:43,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:43,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201170637] [2021-10-08 15:59:43,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:43,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:43,496 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 15:59:43,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:43,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201170637] [2021-10-08 15:59:43,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201170637] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:43,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:43,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 15:59:43,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451356989] [2021-10-08 15:59:43,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 15:59:43,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:43,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 15:59:43,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:59:43,500 INFO L87 Difference]: Start difference. First operand 4028 states and 13715 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:59:44,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:44,439 INFO L93 Difference]: Finished difference Result 7484 states and 26035 transitions. [2021-10-08 15:59:44,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 15:59:44,439 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 28 [2021-10-08 15:59:44,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:44,465 INFO L225 Difference]: With dead ends: 7484 [2021-10-08 15:59:44,465 INFO L226 Difference]: Without dead ends: 7454 [2021-10-08 15:59:44,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 337.6ms TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2021-10-08 15:59:44,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7454 states. [2021-10-08 15:59:44,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7454 to 4082. [2021-10-08 15:59:44,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4082 states, 4078 states have (on average 3.3972535556645416) internal successors, (13854), 4081 states have internal predecessors, (13854), 0 states have call successors, (0), 0 states 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 15:59:44,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4082 states to 4082 states and 13854 transitions. [2021-10-08 15:59:44,600 INFO L78 Accepts]: Start accepts. Automaton has 4082 states and 13854 transitions. Word has length 28 [2021-10-08 15:59:44,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:44,600 INFO L470 AbstractCegarLoop]: Abstraction has 4082 states and 13854 transitions. [2021-10-08 15:59:44,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:59:44,601 INFO L276 IsEmpty]: Start isEmpty. Operand 4082 states and 13854 transitions. [2021-10-08 15:59:44,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:44,609 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:44,609 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:44,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-10-08 15:59:44,610 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:44,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:44,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1029169462, now seen corresponding path program 3 times [2021-10-08 15:59:44,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:44,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188742635] [2021-10-08 15:59:44,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:44,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:44,738 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 15:59:44,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:44,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188742635] [2021-10-08 15:59:44,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188742635] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:44,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:44,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 15:59:44,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902223208] [2021-10-08 15:59:44,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 15:59:44,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:44,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 15:59:44,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:59:44,741 INFO L87 Difference]: Start difference. First operand 4082 states and 13854 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:59:45,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:45,736 INFO L93 Difference]: Finished difference Result 7448 states and 25923 transitions. [2021-10-08 15:59:45,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 15:59:45,737 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 28 [2021-10-08 15:59:45,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:45,766 INFO L225 Difference]: With dead ends: 7448 [2021-10-08 15:59:45,766 INFO L226 Difference]: Without dead ends: 7376 [2021-10-08 15:59:45,767 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 342.0ms TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2021-10-08 15:59:45,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7376 states. [2021-10-08 15:59:45,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7376 to 4034. [2021-10-08 15:59:45,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4034 states, 4030 states have (on average 3.404466501240695) internal successors, (13720), 4033 states have internal predecessors, (13720), 0 states have call successors, (0), 0 states 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 15:59:45,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4034 states to 4034 states and 13720 transitions. [2021-10-08 15:59:45,909 INFO L78 Accepts]: Start accepts. Automaton has 4034 states and 13720 transitions. Word has length 28 [2021-10-08 15:59:45,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:45,909 INFO L470 AbstractCegarLoop]: Abstraction has 4034 states and 13720 transitions. [2021-10-08 15:59:45,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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 15:59:45,909 INFO L276 IsEmpty]: Start isEmpty. Operand 4034 states and 13720 transitions. [2021-10-08 15:59:45,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:45,918 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:45,919 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:45,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-10-08 15:59:45,919 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:45,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:45,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1780121431, now seen corresponding path program 22 times [2021-10-08 15:59:45,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:45,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607639189] [2021-10-08 15:59:45,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:45,920 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:46,055 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 15:59:46,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:46,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607639189] [2021-10-08 15:59:46,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607639189] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:46,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:46,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 15:59:46,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335913045] [2021-10-08 15:59:46,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 15:59:46,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:46,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 15:59:46,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:59:46,058 INFO L87 Difference]: Start difference. First operand 4034 states and 13720 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:47,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:47,178 INFO L93 Difference]: Finished difference Result 8162 states and 28404 transitions. [2021-10-08 15:59:47,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 15:59:47,179 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 28 [2021-10-08 15:59:47,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:47,206 INFO L225 Difference]: With dead ends: 8162 [2021-10-08 15:59:47,206 INFO L226 Difference]: Without dead ends: 8132 [2021-10-08 15:59:47,206 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 396.2ms TimeCoverageRelationStatistics Valid=317, Invalid=873, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 15:59:47,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8132 states. [2021-10-08 15:59:47,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8132 to 4088. [2021-10-08 15:59:47,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4088 states, 4084 states have (on average 3.3932419196865817) internal successors, (13858), 4087 states have internal predecessors, (13858), 0 states have call successors, (0), 0 states 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 15:59:47,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 13858 transitions. [2021-10-08 15:59:47,365 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 13858 transitions. Word has length 28 [2021-10-08 15:59:47,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:47,366 INFO L470 AbstractCegarLoop]: Abstraction has 4088 states and 13858 transitions. [2021-10-08 15:59:47,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:47,366 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 13858 transitions. [2021-10-08 15:59:47,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:47,375 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:47,375 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:47,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-10-08 15:59:47,375 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:47,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:47,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1871988550, now seen corresponding path program 4 times [2021-10-08 15:59:47,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:47,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374978708] [2021-10-08 15:59:47,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:47,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:47,507 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 15:59:47,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:47,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374978708] [2021-10-08 15:59:47,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374978708] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:47,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:47,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 15:59:47,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140850450] [2021-10-08 15:59:47,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 15:59:47,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:47,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 15:59:47,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:59:47,509 INFO L87 Difference]: Start difference. First operand 4088 states and 13858 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:48,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:48,630 INFO L93 Difference]: Finished difference Result 8114 states and 28263 transitions. [2021-10-08 15:59:48,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 15:59:48,631 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 28 [2021-10-08 15:59:48,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:48,663 INFO L225 Difference]: With dead ends: 8114 [2021-10-08 15:59:48,663 INFO L226 Difference]: Without dead ends: 8006 [2021-10-08 15:59:48,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 401.2ms TimeCoverageRelationStatistics Valid=317, Invalid=873, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 15:59:48,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8006 states. [2021-10-08 15:59:48,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8006 to 4004. [2021-10-08 15:59:48,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4004 states, 4000 states have (on average 3.40625) internal successors, (13625), 4003 states have internal predecessors, (13625), 0 states have call successors, (0), 0 states 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 15:59:48,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4004 states to 4004 states and 13625 transitions. [2021-10-08 15:59:48,798 INFO L78 Accepts]: Start accepts. Automaton has 4004 states and 13625 transitions. Word has length 28 [2021-10-08 15:59:48,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:48,798 INFO L470 AbstractCegarLoop]: Abstraction has 4004 states and 13625 transitions. [2021-10-08 15:59:48,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 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 15:59:48,798 INFO L276 IsEmpty]: Start isEmpty. Operand 4004 states and 13625 transitions. [2021-10-08 15:59:48,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:48,807 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:48,808 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:48,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-10-08 15:59:48,808 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:48,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:48,808 INFO L82 PathProgramCache]: Analyzing trace with hash 693718739, now seen corresponding path program 11 times [2021-10-08 15:59:48,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:48,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034121370] [2021-10-08 15:59:48,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:48,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:48,990 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 15:59:48,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:48,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034121370] [2021-10-08 15:59:48,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034121370] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:48,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:48,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-08 15:59:48,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174331358] [2021-10-08 15:59:48,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 15:59:48,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:48,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 15:59:48,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-08 15:59:48,993 INFO L87 Difference]: Start difference. First operand 4004 states and 13625 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 15:59:50,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:50,034 INFO L93 Difference]: Finished difference Result 6102 states and 21363 transitions. [2021-10-08 15:59:50,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 15:59:50,035 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 28 [2021-10-08 15:59:50,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:50,054 INFO L225 Difference]: With dead ends: 6102 [2021-10-08 15:59:50,055 INFO L226 Difference]: Without dead ends: 6086 [2021-10-08 15:59:50,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 427.1ms TimeCoverageRelationStatistics Valid=347, Invalid=1059, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 15:59:50,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6086 states. [2021-10-08 15:59:50,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6086 to 4196. [2021-10-08 15:59:50,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4196 states, 4192 states have (on average 3.4010019083969465) internal successors, (14257), 4195 states have internal predecessors, (14257), 0 states have call successors, (0), 0 states 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 15:59:50,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4196 states to 4196 states and 14257 transitions. [2021-10-08 15:59:50,174 INFO L78 Accepts]: Start accepts. Automaton has 4196 states and 14257 transitions. Word has length 28 [2021-10-08 15:59:50,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:50,174 INFO L470 AbstractCegarLoop]: Abstraction has 4196 states and 14257 transitions. [2021-10-08 15:59:50,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 15:59:50,174 INFO L276 IsEmpty]: Start isEmpty. Operand 4196 states and 14257 transitions. [2021-10-08 15:59:50,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:50,183 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:50,183 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:50,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-10-08 15:59:50,183 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:50,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:50,184 INFO L82 PathProgramCache]: Analyzing trace with hash 689737677, now seen corresponding path program 23 times [2021-10-08 15:59:50,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:50,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292663036] [2021-10-08 15:59:50,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:50,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:50,356 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 15:59:50,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:50,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292663036] [2021-10-08 15:59:50,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292663036] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:50,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:50,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-08 15:59:50,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549196495] [2021-10-08 15:59:50,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 15:59:50,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:50,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 15:59:50,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-08 15:59:50,358 INFO L87 Difference]: Start difference. First operand 4196 states and 14257 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 15:59:51,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:51,405 INFO L93 Difference]: Finished difference Result 6158 states and 21528 transitions. [2021-10-08 15:59:51,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 15:59:51,406 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 28 [2021-10-08 15:59:51,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:51,428 INFO L225 Difference]: With dead ends: 6158 [2021-10-08 15:59:51,429 INFO L226 Difference]: Without dead ends: 6086 [2021-10-08 15:59:51,429 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 436.6ms TimeCoverageRelationStatistics Valid=347, Invalid=1059, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 15:59:51,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6086 states. [2021-10-08 15:59:51,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6086 to 4148. [2021-10-08 15:59:51,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4144 states have (on average 3.4051640926640925) internal successors, (14111), 4147 states have internal predecessors, (14111), 0 states have call successors, (0), 0 states 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 15:59:51,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 14111 transitions. [2021-10-08 15:59:51,546 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 14111 transitions. Word has length 28 [2021-10-08 15:59:51,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:51,546 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 14111 transitions. [2021-10-08 15:59:51,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 15:59:51,546 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 14111 transitions. [2021-10-08 15:59:51,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:51,558 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:51,558 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:51,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-10-08 15:59:51,558 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:51,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:51,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1018552621, now seen corresponding path program 12 times [2021-10-08 15:59:51,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:51,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343741834] [2021-10-08 15:59:51,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:51,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:51,742 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 15:59:51,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:51,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343741834] [2021-10-08 15:59:51,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343741834] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:51,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:51,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-08 15:59:51,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284557213] [2021-10-08 15:59:51,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 15:59:51,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:51,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 15:59:51,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-08 15:59:51,746 INFO L87 Difference]: Start difference. First operand 4148 states and 14111 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 15:59:52,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:52,870 INFO L93 Difference]: Finished difference Result 6070 states and 21243 transitions. [2021-10-08 15:59:52,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 15:59:52,871 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 28 [2021-10-08 15:59:52,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:52,890 INFO L225 Difference]: With dead ends: 6070 [2021-10-08 15:59:52,890 INFO L226 Difference]: Without dead ends: 6054 [2021-10-08 15:59:52,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 427.2ms TimeCoverageRelationStatistics Valid=347, Invalid=1059, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 15:59:52,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6054 states. [2021-10-08 15:59:52,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6054 to 4196. [2021-10-08 15:59:52,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4196 states, 4192 states have (on average 3.395276717557252) internal successors, (14233), 4195 states have internal predecessors, (14233), 0 states have call successors, (0), 0 states 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 15:59:53,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4196 states to 4196 states and 14233 transitions. [2021-10-08 15:59:53,010 INFO L78 Accepts]: Start accepts. Automaton has 4196 states and 14233 transitions. Word has length 28 [2021-10-08 15:59:53,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:53,011 INFO L470 AbstractCegarLoop]: Abstraction has 4196 states and 14233 transitions. [2021-10-08 15:59:53,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 15:59:53,011 INFO L276 IsEmpty]: Start isEmpty. Operand 4196 states and 14233 transitions. [2021-10-08 15:59:53,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:53,020 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:53,020 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:53,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-10-08 15:59:53,021 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:53,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:53,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1024317282, now seen corresponding path program 5 times [2021-10-08 15:59:53,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:53,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599226272] [2021-10-08 15:59:53,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:53,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:53,184 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 15:59:53,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:53,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599226272] [2021-10-08 15:59:53,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599226272] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:53,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:53,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-08 15:59:53,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426970069] [2021-10-08 15:59:53,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 15:59:53,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:53,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 15:59:53,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-08 15:59:53,186 INFO L87 Difference]: Start difference. First operand 4196 states and 14233 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 15:59:54,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:54,280 INFO L93 Difference]: Finished difference Result 6094 states and 21326 transitions. [2021-10-08 15:59:54,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 15:59:54,280 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 28 [2021-10-08 15:59:54,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:54,304 INFO L225 Difference]: With dead ends: 6094 [2021-10-08 15:59:54,305 INFO L226 Difference]: Without dead ends: 6028 [2021-10-08 15:59:54,305 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 405.8ms TimeCoverageRelationStatistics Valid=347, Invalid=1059, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 15:59:54,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6028 states. [2021-10-08 15:59:54,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6028 to 4148. [2021-10-08 15:59:54,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4144 states have (on average 3.399372586872587) internal successors, (14087), 4147 states have internal predecessors, (14087), 0 states have call successors, (0), 0 states 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 15:59:54,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 14087 transitions. [2021-10-08 15:59:54,455 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 14087 transitions. Word has length 28 [2021-10-08 15:59:54,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:54,456 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 14087 transitions. [2021-10-08 15:59:54,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 15:59:54,456 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 14087 transitions. [2021-10-08 15:59:54,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:54,467 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:54,467 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:54,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-10-08 15:59:54,467 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:54,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:54,468 INFO L82 PathProgramCache]: Analyzing trace with hash -555136697, now seen corresponding path program 24 times [2021-10-08 15:59:54,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:54,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474216299] [2021-10-08 15:59:54,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:54,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:54,657 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 15:59:54,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:54,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474216299] [2021-10-08 15:59:54,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474216299] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:54,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:54,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-08 15:59:54,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084716471] [2021-10-08 15:59:54,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 15:59:54,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:54,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 15:59:54,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-08 15:59:54,660 INFO L87 Difference]: Start difference. First operand 4148 states and 14087 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 15:59:55,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:55,748 INFO L93 Difference]: Finished difference Result 6134 states and 21402 transitions. [2021-10-08 15:59:55,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 15:59:55,749 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 28 [2021-10-08 15:59:55,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:55,771 INFO L225 Difference]: With dead ends: 6134 [2021-10-08 15:59:55,771 INFO L226 Difference]: Without dead ends: 6104 [2021-10-08 15:59:55,772 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 439.3ms TimeCoverageRelationStatistics Valid=347, Invalid=1059, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 15:59:55,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6104 states. [2021-10-08 15:59:55,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6104 to 4202. [2021-10-08 15:59:55,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4202 states, 4198 states have (on average 3.3885183420676515) internal successors, (14225), 4201 states have internal predecessors, (14225), 0 states have call successors, (0), 0 states 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 15:59:55,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4202 states to 4202 states and 14225 transitions. [2021-10-08 15:59:55,906 INFO L78 Accepts]: Start accepts. Automaton has 4202 states and 14225 transitions. Word has length 28 [2021-10-08 15:59:55,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:55,906 INFO L470 AbstractCegarLoop]: Abstraction has 4202 states and 14225 transitions. [2021-10-08 15:59:55,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 15:59:55,907 INFO L276 IsEmpty]: Start isEmpty. Operand 4202 states and 14225 transitions. [2021-10-08 15:59:55,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:55,915 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:55,915 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:55,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-10-08 15:59:55,916 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:55,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:55,916 INFO L82 PathProgramCache]: Analyzing trace with hash -555194216, now seen corresponding path program 6 times [2021-10-08 15:59:55,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:55,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489980782] [2021-10-08 15:59:55,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:55,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:55,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:56,131 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 15:59:56,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:56,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489980782] [2021-10-08 15:59:56,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489980782] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:56,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:56,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-08 15:59:56,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519376570] [2021-10-08 15:59:56,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 15:59:56,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:56,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 15:59:56,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-08 15:59:56,134 INFO L87 Difference]: Start difference. First operand 4202 states and 14225 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 15:59:57,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:57,184 INFO L93 Difference]: Finished difference Result 6090 states and 21279 transitions. [2021-10-08 15:59:57,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 15:59:57,185 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 28 [2021-10-08 15:59:57,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:57,209 INFO L225 Difference]: With dead ends: 6090 [2021-10-08 15:59:57,209 INFO L226 Difference]: Without dead ends: 5748 [2021-10-08 15:59:57,210 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 460.1ms TimeCoverageRelationStatistics Valid=347, Invalid=1059, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 15:59:57,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5748 states. [2021-10-08 15:59:57,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5748 to 3980. [2021-10-08 15:59:57,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3980 states, 3976 states have (on average 3.392605633802817) internal successors, (13489), 3979 states have internal predecessors, (13489), 0 states have call successors, (0), 0 states 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 15:59:57,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3980 states to 3980 states and 13489 transitions. [2021-10-08 15:59:57,333 INFO L78 Accepts]: Start accepts. Automaton has 3980 states and 13489 transitions. Word has length 28 [2021-10-08 15:59:57,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:57,333 INFO L470 AbstractCegarLoop]: Abstraction has 3980 states and 13489 transitions. [2021-10-08 15:59:57,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 15:59:57,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3980 states and 13489 transitions. [2021-10-08 15:59:57,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:57,342 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:57,342 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:57,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-10-08 15:59:57,342 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:57,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:57,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1116923667, now seen corresponding path program 13 times [2021-10-08 15:59:57,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:57,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12862030] [2021-10-08 15:59:57,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:57,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:57,467 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 15:59:57,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:57,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12862030] [2021-10-08 15:59:57,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12862030] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:57,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:57,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 15:59:57,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810695531] [2021-10-08 15:59:57,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 15:59:57,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:57,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 15:59:57,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-08 15:59:57,470 INFO L87 Difference]: Start difference. First operand 3980 states and 13489 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 15:59:58,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:58,506 INFO L93 Difference]: Finished difference Result 5482 states and 19143 transitions. [2021-10-08 15:59:58,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 15:59:58,507 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 28 [2021-10-08 15:59:58,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:58,523 INFO L225 Difference]: With dead ends: 5482 [2021-10-08 15:59:58,523 INFO L226 Difference]: Without dead ends: 5450 [2021-10-08 15:59:58,523 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 375.8ms TimeCoverageRelationStatistics Valid=354, Invalid=1052, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 15:59:58,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5450 states. [2021-10-08 15:59:58,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5450 to 4014. [2021-10-08 15:59:58,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4014 states, 4010 states have (on average 3.3815461346633415) internal successors, (13560), 4013 states have internal predecessors, (13560), 0 states have call successors, (0), 0 states 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 15:59:58,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4014 states to 4014 states and 13560 transitions. [2021-10-08 15:59:58,641 INFO L78 Accepts]: Start accepts. Automaton has 4014 states and 13560 transitions. Word has length 28 [2021-10-08 15:59:58,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:58,641 INFO L470 AbstractCegarLoop]: Abstraction has 4014 states and 13560 transitions. [2021-10-08 15:59:58,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 15:59:58,641 INFO L276 IsEmpty]: Start isEmpty. Operand 4014 states and 13560 transitions. [2021-10-08 15:59:58,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:58,650 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:58,650 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:58,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-10-08 15:59:58,650 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:58,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:58,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1112942605, now seen corresponding path program 25 times [2021-10-08 15:59:58,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:58,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696580186] [2021-10-08 15:59:58,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:58,651 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:59:58,797 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 15:59:58,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:59:58,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696580186] [2021-10-08 15:59:58,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696580186] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:59:58,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:59:58,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 15:59:58,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037740546] [2021-10-08 15:59:58,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 15:59:58,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:59:58,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 15:59:58,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-08 15:59:58,801 INFO L87 Difference]: Start difference. First operand 4014 states and 13560 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 15:59:59,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:59:59,803 INFO L93 Difference]: Finished difference Result 5554 states and 19353 transitions. [2021-10-08 15:59:59,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 15:59:59,807 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 28 [2021-10-08 15:59:59,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:59:59,833 INFO L225 Difference]: With dead ends: 5554 [2021-10-08 15:59:59,834 INFO L226 Difference]: Without dead ends: 5442 [2021-10-08 15:59:59,835 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 389.0ms TimeCoverageRelationStatistics Valid=354, Invalid=1052, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 15:59:59,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5442 states. [2021-10-08 15:59:59,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5442 to 3934. [2021-10-08 15:59:59,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3934 states, 3930 states have (on average 3.386259541984733) internal successors, (13308), 3933 states have internal predecessors, (13308), 0 states have call successors, (0), 0 states 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 15:59:59,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3934 states to 3934 states and 13308 transitions. [2021-10-08 15:59:59,966 INFO L78 Accepts]: Start accepts. Automaton has 3934 states and 13308 transitions. Word has length 28 [2021-10-08 15:59:59,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:59:59,966 INFO L470 AbstractCegarLoop]: Abstraction has 3934 states and 13308 transitions. [2021-10-08 15:59:59,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 15:59:59,966 INFO L276 IsEmpty]: Start isEmpty. Operand 3934 states and 13308 transitions. [2021-10-08 15:59:59,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 15:59:59,974 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:59:59,974 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:59:59,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-10-08 15:59:59,975 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 15:59:59,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:59:59,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1955741087, now seen corresponding path program 14 times [2021-10-08 15:59:59,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:59:59,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673429890] [2021-10-08 15:59:59,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:59:59,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:59:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:00,106 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 16:00:00,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:00,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673429890] [2021-10-08 16:00:00,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673429890] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:00,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:00,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 16:00:00,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252342102] [2021-10-08 16:00:00,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:00:00,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:00,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:00:00,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:00:00,109 INFO L87 Difference]: Start difference. First operand 3934 states and 13308 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:01,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:01,119 INFO L93 Difference]: Finished difference Result 5392 states and 18857 transitions. [2021-10-08 16:00:01,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 16:00:01,119 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 28 [2021-10-08 16:00:01,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:01,139 INFO L225 Difference]: With dead ends: 5392 [2021-10-08 16:00:01,140 INFO L226 Difference]: Without dead ends: 5372 [2021-10-08 16:00:01,140 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 371.1ms TimeCoverageRelationStatistics Valid=342, Invalid=990, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 16:00:01,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2021-10-08 16:00:01,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 3984. [2021-10-08 16:00:01,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3984 states, 3980 states have (on average 3.371356783919598) internal successors, (13418), 3983 states have internal predecessors, (13418), 0 states have call successors, (0), 0 states 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 16:00:01,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3984 states to 3984 states and 13418 transitions. [2021-10-08 16:00:01,251 INFO L78 Accepts]: Start accepts. Automaton has 3984 states and 13418 transitions. Word has length 28 [2021-10-08 16:00:01,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:01,252 INFO L470 AbstractCegarLoop]: Abstraction has 3984 states and 13418 transitions. [2021-10-08 16:00:01,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:01,252 INFO L276 IsEmpty]: Start isEmpty. Operand 3984 states and 13418 transitions. [2021-10-08 16:00:01,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:00:01,261 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:01,261 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:01,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-10-08 16:00:01,261 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:01,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:01,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1952602794, now seen corresponding path program 7 times [2021-10-08 16:00:01,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:01,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234252700] [2021-10-08 16:00:01,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:01,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:01,395 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 16:00:01,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:01,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234252700] [2021-10-08 16:00:01,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234252700] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:01,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:01,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 16:00:01,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767269742] [2021-10-08 16:00:01,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:00:01,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:01,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:00:01,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:00:01,398 INFO L87 Difference]: Start difference. First operand 3984 states and 13418 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:02,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:02,462 INFO L93 Difference]: Finished difference Result 5544 states and 19247 transitions. [2021-10-08 16:00:02,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 16:00:02,462 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 28 [2021-10-08 16:00:02,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:02,483 INFO L225 Difference]: With dead ends: 5544 [2021-10-08 16:00:02,483 INFO L226 Difference]: Without dead ends: 5364 [2021-10-08 16:00:02,484 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 370.6ms TimeCoverageRelationStatistics Valid=354, Invalid=1052, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 16:00:02,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5364 states. [2021-10-08 16:00:02,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5364 to 3848. [2021-10-08 16:00:02,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3848 states, 3844 states have (on average 3.3777315296566077) internal successors, (12984), 3847 states have internal predecessors, (12984), 0 states have call successors, (0), 0 states 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 16:00:02,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3848 states to 3848 states and 12984 transitions. [2021-10-08 16:00:02,592 INFO L78 Accepts]: Start accepts. Automaton has 3848 states and 12984 transitions. Word has length 28 [2021-10-08 16:00:02,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:02,592 INFO L470 AbstractCegarLoop]: Abstraction has 3848 states and 12984 transitions. [2021-10-08 16:00:02,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:02,592 INFO L276 IsEmpty]: Start isEmpty. Operand 3848 states and 12984 transitions. [2021-10-08 16:00:02,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:00:02,600 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:02,600 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:02,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-10-08 16:00:02,600 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:02,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:02,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1873241436, now seen corresponding path program 8 times [2021-10-08 16:00:02,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:02,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667551197] [2021-10-08 16:00:02,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:02,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:02,765 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 16:00:02,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:02,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667551197] [2021-10-08 16:00:02,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667551197] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:02,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:02,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 16:00:02,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029724573] [2021-10-08 16:00:02,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:00:02,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:02,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:00:02,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:00:02,768 INFO L87 Difference]: Start difference. First operand 3848 states and 12984 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:03,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:03,804 INFO L93 Difference]: Finished difference Result 5448 states and 18919 transitions. [2021-10-08 16:00:03,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 16:00:03,805 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 28 [2021-10-08 16:00:03,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:03,823 INFO L225 Difference]: With dead ends: 5448 [2021-10-08 16:00:03,823 INFO L226 Difference]: Without dead ends: 5208 [2021-10-08 16:00:03,824 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 426.4ms TimeCoverageRelationStatistics Valid=342, Invalid=990, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 16:00:03,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5208 states. [2021-10-08 16:00:03,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5208 to 3822. [2021-10-08 16:00:03,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3822 states, 3818 states have (on average 3.3677317967522264) internal successors, (12858), 3821 states have internal predecessors, (12858), 0 states have call successors, (0), 0 states 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 16:00:03,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3822 states to 3822 states and 12858 transitions. [2021-10-08 16:00:03,934 INFO L78 Accepts]: Start accepts. Automaton has 3822 states and 12858 transitions. Word has length 28 [2021-10-08 16:00:03,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:03,934 INFO L470 AbstractCegarLoop]: Abstraction has 3822 states and 12858 transitions. [2021-10-08 16:00:03,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:03,934 INFO L276 IsEmpty]: Start isEmpty. Operand 3822 states and 12858 transitions. [2021-10-08 16:00:03,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:00:03,942 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:03,942 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:03,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-10-08 16:00:03,943 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:03,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:03,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1873268595, now seen corresponding path program 26 times [2021-10-08 16:00:03,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:03,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625698359] [2021-10-08 16:00:03,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:03,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:04,066 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 16:00:04,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:04,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625698359] [2021-10-08 16:00:04,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625698359] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:04,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:04,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 16:00:04,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349499237] [2021-10-08 16:00:04,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:00:04,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:04,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:00:04,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:00:04,069 INFO L87 Difference]: Start difference. First operand 3822 states and 12858 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:05,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:05,079 INFO L93 Difference]: Finished difference Result 5224 states and 18205 transitions. [2021-10-08 16:00:05,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 16:00:05,080 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 28 [2021-10-08 16:00:05,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:05,100 INFO L225 Difference]: With dead ends: 5224 [2021-10-08 16:00:05,100 INFO L226 Difference]: Without dead ends: 4440 [2021-10-08 16:00:05,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 371.9ms TimeCoverageRelationStatistics Valid=342, Invalid=990, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 16:00:05,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4440 states. [2021-10-08 16:00:05,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4440 to 3254. [2021-10-08 16:00:05,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3254 states, 3250 states have (on average 3.3735384615384616) internal successors, (10964), 3253 states have internal predecessors, (10964), 0 states have call successors, (0), 0 states 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 16:00:05,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3254 states to 3254 states and 10964 transitions. [2021-10-08 16:00:05,200 INFO L78 Accepts]: Start accepts. Automaton has 3254 states and 10964 transitions. Word has length 28 [2021-10-08 16:00:05,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:05,200 INFO L470 AbstractCegarLoop]: Abstraction has 3254 states and 10964 transitions. [2021-10-08 16:00:05,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:05,200 INFO L276 IsEmpty]: Start isEmpty. Operand 3254 states and 10964 transitions. [2021-10-08 16:00:05,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:00:05,208 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:05,208 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:05,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-10-08 16:00:05,208 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:05,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:05,209 INFO L82 PathProgramCache]: Analyzing trace with hash 865853587, now seen corresponding path program 15 times [2021-10-08 16:00:05,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:05,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107729675] [2021-10-08 16:00:05,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:05,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:05,361 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 16:00:05,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:05,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107729675] [2021-10-08 16:00:05,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107729675] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:05,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:05,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-08 16:00:05,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423720365] [2021-10-08 16:00:05,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:00:05,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:05,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:00:05,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:00:05,364 INFO L87 Difference]: Start difference. First operand 3254 states and 10964 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 16:00:06,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:06,519 INFO L93 Difference]: Finished difference Result 4834 states and 16774 transitions. [2021-10-08 16:00:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 16:00:06,521 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 28 [2021-10-08 16:00:06,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:06,543 INFO L225 Difference]: With dead ends: 4834 [2021-10-08 16:00:06,544 INFO L226 Difference]: Without dead ends: 4802 [2021-10-08 16:00:06,544 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 468.2ms TimeCoverageRelationStatistics Valid=432, Invalid=1374, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 16:00:06,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4802 states. [2021-10-08 16:00:06,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4802 to 3232. [2021-10-08 16:00:06,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3232 states, 3228 states have (on average 3.377633209417596) internal successors, (10903), 3231 states have internal predecessors, (10903), 0 states have call successors, (0), 0 states 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 16:00:06,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3232 states to 3232 states and 10903 transitions. [2021-10-08 16:00:06,662 INFO L78 Accepts]: Start accepts. Automaton has 3232 states and 10903 transitions. Word has length 28 [2021-10-08 16:00:06,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:06,663 INFO L470 AbstractCegarLoop]: Abstraction has 3232 states and 10903 transitions. [2021-10-08 16:00:06,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 16:00:06,663 INFO L276 IsEmpty]: Start isEmpty. Operand 3232 states and 10903 transitions. [2021-10-08 16:00:06,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:00:06,671 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:06,671 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:06,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-10-08 16:00:06,671 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:06,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:06,671 INFO L82 PathProgramCache]: Analyzing trace with hash 861872525, now seen corresponding path program 27 times [2021-10-08 16:00:06,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:06,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899886787] [2021-10-08 16:00:06,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:06,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:06,841 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 16:00:06,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:06,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899886787] [2021-10-08 16:00:06,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899886787] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:06,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:06,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-08 16:00:06,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983300615] [2021-10-08 16:00:06,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:00:06,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:06,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:00:06,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:00:06,844 INFO L87 Difference]: Start difference. First operand 3232 states and 10903 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 16:00:07,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:07,982 INFO L93 Difference]: Finished difference Result 4850 states and 16814 transitions. [2021-10-08 16:00:07,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 16:00:07,983 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 28 [2021-10-08 16:00:07,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:07,999 INFO L225 Difference]: With dead ends: 4850 [2021-10-08 16:00:07,999 INFO L226 Difference]: Without dead ends: 4674 [2021-10-08 16:00:08,000 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 461.2ms TimeCoverageRelationStatistics Valid=432, Invalid=1374, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 16:00:08,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4674 states. [2021-10-08 16:00:08,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4674 to 3144. [2021-10-08 16:00:08,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3144 states, 3140 states have (on average 3.3863057324840766) internal successors, (10633), 3143 states have internal predecessors, (10633), 0 states have call successors, (0), 0 states 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 16:00:08,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3144 states to 3144 states and 10633 transitions. [2021-10-08 16:00:08,091 INFO L78 Accepts]: Start accepts. Automaton has 3144 states and 10633 transitions. Word has length 28 [2021-10-08 16:00:08,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:08,092 INFO L470 AbstractCegarLoop]: Abstraction has 3144 states and 10633 transitions. [2021-10-08 16:00:08,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 16:00:08,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3144 states and 10633 transitions. [2021-10-08 16:00:08,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:00:08,098 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:08,098 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:08,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-10-08 16:00:08,099 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:08,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:08,099 INFO L82 PathProgramCache]: Analyzing trace with hash -846417773, now seen corresponding path program 16 times [2021-10-08 16:00:08,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:08,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035247192] [2021-10-08 16:00:08,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:08,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:08,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:08,240 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 16:00:08,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:08,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035247192] [2021-10-08 16:00:08,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035247192] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:08,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:08,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-08 16:00:08,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039202646] [2021-10-08 16:00:08,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:00:08,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:08,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:00:08,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:00:08,242 INFO L87 Difference]: Start difference. First operand 3144 states and 10633 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 16:00:09,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:09,237 INFO L93 Difference]: Finished difference Result 4678 states and 16228 transitions. [2021-10-08 16:00:09,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 16:00:09,238 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 28 [2021-10-08 16:00:09,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:09,253 INFO L225 Difference]: With dead ends: 4678 [2021-10-08 16:00:09,253 INFO L226 Difference]: Without dead ends: 4658 [2021-10-08 16:00:09,254 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 376.0ms TimeCoverageRelationStatistics Valid=381, Invalid=1101, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 16:00:09,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2021-10-08 16:00:09,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 3184. [2021-10-08 16:00:09,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3184 states, 3180 states have (on average 3.3720125786163524) internal successors, (10723), 3183 states have internal predecessors, (10723), 0 states have call successors, (0), 0 states 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 16:00:09,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 10723 transitions. [2021-10-08 16:00:09,342 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 10723 transitions. Word has length 28 [2021-10-08 16:00:09,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:09,343 INFO L470 AbstractCegarLoop]: Abstraction has 3184 states and 10723 transitions. [2021-10-08 16:00:09,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 16:00:09,343 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 10723 transitions. [2021-10-08 16:00:09,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:00:09,349 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:09,350 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:09,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-10-08 16:00:09,350 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:09,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:09,350 INFO L82 PathProgramCache]: Analyzing trace with hash -852182434, now seen corresponding path program 7 times [2021-10-08 16:00:09,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:09,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497345209] [2021-10-08 16:00:09,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:09,351 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:09,492 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 16:00:09,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:09,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497345209] [2021-10-08 16:00:09,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497345209] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:09,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:09,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-08 16:00:09,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544842132] [2021-10-08 16:00:09,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:00:09,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:09,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:00:09,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:00:09,496 INFO L87 Difference]: Start difference. First operand 3184 states and 10723 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 16:00:10,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:10,728 INFO L93 Difference]: Finished difference Result 4810 states and 16574 transitions. [2021-10-08 16:00:10,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-08 16:00:10,729 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 28 [2021-10-08 16:00:10,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:10,742 INFO L225 Difference]: With dead ends: 4810 [2021-10-08 16:00:10,742 INFO L226 Difference]: Without dead ends: 4606 [2021-10-08 16:00:10,743 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 520.0ms TimeCoverageRelationStatistics Valid=532, Invalid=1724, Unknown=0, NotChecked=0, Total=2256 [2021-10-08 16:00:10,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4606 states. [2021-10-08 16:00:10,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4606 to 3068. [2021-10-08 16:00:10,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3068 states, 3064 states have (on average 3.379569190600522) internal successors, (10355), 3067 states have internal predecessors, (10355), 0 states have call successors, (0), 0 states 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 16:00:10,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 10355 transitions. [2021-10-08 16:00:10,826 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 10355 transitions. Word has length 28 [2021-10-08 16:00:10,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:10,826 INFO L470 AbstractCegarLoop]: Abstraction has 3068 states and 10355 transitions. [2021-10-08 16:00:10,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 16:00:10,827 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 10355 transitions. [2021-10-08 16:00:10,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:00:10,834 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:10,834 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:10,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-10-08 16:00:10,834 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:10,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:10,834 INFO L82 PathProgramCache]: Analyzing trace with hash -383001849, now seen corresponding path program 28 times [2021-10-08 16:00:10,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:10,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971752764] [2021-10-08 16:00:10,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:10,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:10,993 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 16:00:10,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:10,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971752764] [2021-10-08 16:00:10,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971752764] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:10,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:10,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-08 16:00:10,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976478519] [2021-10-08 16:00:10,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:00:10,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:10,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:00:10,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:00:10,996 INFO L87 Difference]: Start difference. First operand 3068 states and 10355 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 16:00:11,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:11,964 INFO L93 Difference]: Finished difference Result 4590 states and 15834 transitions. [2021-10-08 16:00:11,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 16:00:11,964 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 28 [2021-10-08 16:00:11,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:11,978 INFO L225 Difference]: With dead ends: 4590 [2021-10-08 16:00:11,978 INFO L226 Difference]: Without dead ends: 4550 [2021-10-08 16:00:11,978 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 405.4ms TimeCoverageRelationStatistics Valid=381, Invalid=1101, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 16:00:11,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4550 states. [2021-10-08 16:00:12,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4550 to 3132. [2021-10-08 16:00:12,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 3128 states have (on average 3.3615728900255752) internal successors, (10515), 3131 states have internal predecessors, (10515), 0 states have call successors, (0), 0 states 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 16:00:12,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 10515 transitions. [2021-10-08 16:00:12,067 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 10515 transitions. Word has length 28 [2021-10-08 16:00:12,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:12,067 INFO L470 AbstractCegarLoop]: Abstraction has 3132 states and 10515 transitions. [2021-10-08 16:00:12,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 16:00:12,068 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 10515 transitions. [2021-10-08 16:00:12,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:00:12,074 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:12,074 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:12,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-10-08 16:00:12,075 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:12,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:12,075 INFO L82 PathProgramCache]: Analyzing trace with hash -383059368, now seen corresponding path program 8 times [2021-10-08 16:00:12,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:12,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862956494] [2021-10-08 16:00:12,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:12,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:12,228 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 16:00:12,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:12,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862956494] [2021-10-08 16:00:12,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862956494] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:12,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:12,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-08 16:00:12,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001144982] [2021-10-08 16:00:12,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:00:12,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:12,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:00:12,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:00:12,231 INFO L87 Difference]: Start difference. First operand 3132 states and 10515 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 16:00:13,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:13,330 INFO L93 Difference]: Finished difference Result 4638 states and 15956 transitions. [2021-10-08 16:00:13,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 16:00:13,331 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 28 [2021-10-08 16:00:13,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:13,342 INFO L225 Difference]: With dead ends: 4638 [2021-10-08 16:00:13,342 INFO L226 Difference]: Without dead ends: 3692 [2021-10-08 16:00:13,343 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 475.9ms TimeCoverageRelationStatistics Valid=470, Invalid=1422, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 16:00:13,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3692 states. [2021-10-08 16:00:13,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3692 to 2650. [2021-10-08 16:00:13,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2650 states, 2646 states have (on average 3.3624338624338623) internal successors, (8897), 2649 states have internal predecessors, (8897), 0 states have call successors, (0), 0 states 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 16:00:13,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 8897 transitions. [2021-10-08 16:00:13,416 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 8897 transitions. Word has length 28 [2021-10-08 16:00:13,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:13,416 INFO L470 AbstractCegarLoop]: Abstraction has 2650 states and 8897 transitions. [2021-10-08 16:00:13,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 16:00:13,417 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 8897 transitions. [2021-10-08 16:00:13,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:00:13,422 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:13,422 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:13,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-10-08 16:00:13,423 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:13,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:13,423 INFO L82 PathProgramCache]: Analyzing trace with hash 324627679, now seen corresponding path program 17 times [2021-10-08 16:00:13,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:13,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453875626] [2021-10-08 16:00:13,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:13,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:13,548 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 16:00:13,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:13,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453875626] [2021-10-08 16:00:13,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453875626] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:13,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:13,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 16:00:13,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747661603] [2021-10-08 16:00:13,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:00:13,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:13,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:00:13,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:00:13,551 INFO L87 Difference]: Start difference. First operand 2650 states and 8897 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:14,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:14,190 INFO L93 Difference]: Finished difference Result 3630 states and 12617 transitions. [2021-10-08 16:00:14,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 16:00:14,191 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 28 [2021-10-08 16:00:14,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:14,203 INFO L225 Difference]: With dead ends: 3630 [2021-10-08 16:00:14,203 INFO L226 Difference]: Without dead ends: 3610 [2021-10-08 16:00:14,204 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 239.8ms TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:00:14,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3610 states. [2021-10-08 16:00:14,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3610 to 2640. [2021-10-08 16:00:14,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2640 states, 2636 states have (on average 3.3626707132018208) internal successors, (8864), 2639 states have internal predecessors, (8864), 0 states have call successors, (0), 0 states 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 16:00:14,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2640 states to 2640 states and 8864 transitions. [2021-10-08 16:00:14,277 INFO L78 Accepts]: Start accepts. Automaton has 2640 states and 8864 transitions. Word has length 28 [2021-10-08 16:00:14,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:14,277 INFO L470 AbstractCegarLoop]: Abstraction has 2640 states and 8864 transitions. [2021-10-08 16:00:14,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:14,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2640 states and 8864 transitions. [2021-10-08 16:00:14,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:00:14,283 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:14,283 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:14,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-10-08 16:00:14,284 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:14,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:14,284 INFO L82 PathProgramCache]: Analyzing trace with hash 321489386, now seen corresponding path program 9 times [2021-10-08 16:00:14,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:14,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832196640] [2021-10-08 16:00:14,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:14,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:14,431 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 16:00:14,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:14,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832196640] [2021-10-08 16:00:14,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832196640] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:14,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:14,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 16:00:14,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271094818] [2021-10-08 16:00:14,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:00:14,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:14,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:00:14,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:00:14,434 INFO L87 Difference]: Start difference. First operand 2640 states and 8864 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:15,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:15,240 INFO L93 Difference]: Finished difference Result 3716 states and 12817 transitions. [2021-10-08 16:00:15,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 16:00:15,241 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 28 [2021-10-08 16:00:15,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:15,253 INFO L225 Difference]: With dead ends: 3716 [2021-10-08 16:00:15,254 INFO L226 Difference]: Without dead ends: 3572 [2021-10-08 16:00:15,254 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 328.8ms TimeCoverageRelationStatistics Valid=276, Invalid=780, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 16:00:15,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2021-10-08 16:00:15,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 2530. [2021-10-08 16:00:15,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2526 states have (on average 3.3776722090261284) internal successors, (8532), 2529 states have internal predecessors, (8532), 0 states have call successors, (0), 0 states 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 16:00:15,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 8532 transitions. [2021-10-08 16:00:15,326 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 8532 transitions. Word has length 28 [2021-10-08 16:00:15,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:15,327 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 8532 transitions. [2021-10-08 16:00:15,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:15,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 8532 transitions. [2021-10-08 16:00:15,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:00:15,332 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:15,332 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:15,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-10-08 16:00:15,333 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:15,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:15,333 INFO L82 PathProgramCache]: Analyzing trace with hash 2098238495, now seen corresponding path program 18 times [2021-10-08 16:00:15,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:15,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149526280] [2021-10-08 16:00:15,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:15,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:15,465 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 16:00:15,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:15,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149526280] [2021-10-08 16:00:15,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149526280] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:15,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:15,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 16:00:15,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143539345] [2021-10-08 16:00:15,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:00:15,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:15,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:00:15,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:00:15,468 INFO L87 Difference]: Start difference. First operand 2530 states and 8532 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:16,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:16,089 INFO L93 Difference]: Finished difference Result 3498 states and 12236 transitions. [2021-10-08 16:00:16,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 16:00:16,090 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 28 [2021-10-08 16:00:16,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:16,102 INFO L225 Difference]: With dead ends: 3498 [2021-10-08 16:00:16,102 INFO L226 Difference]: Without dead ends: 3478 [2021-10-08 16:00:16,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 235.1ms TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:00:16,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3478 states. [2021-10-08 16:00:16,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3478 to 2508. [2021-10-08 16:00:16,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2508 states, 2505 states have (on average 3.386427145708583) internal successors, (8483), 2507 states have internal predecessors, (8483), 0 states have call successors, (0), 0 states 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 16:00:16,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2508 states to 2508 states and 8483 transitions. [2021-10-08 16:00:16,182 INFO L78 Accepts]: Start accepts. Automaton has 2508 states and 8483 transitions. Word has length 28 [2021-10-08 16:00:16,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:16,182 INFO L470 AbstractCegarLoop]: Abstraction has 2508 states and 8483 transitions. [2021-10-08 16:00:16,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:16,182 INFO L276 IsEmpty]: Start isEmpty. Operand 2508 states and 8483 transitions. [2021-10-08 16:00:16,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:00:16,188 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:16,188 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:16,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-10-08 16:00:16,188 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:16,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:16,188 INFO L82 PathProgramCache]: Analyzing trace with hash 2092473834, now seen corresponding path program 9 times [2021-10-08 16:00:16,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:16,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193681317] [2021-10-08 16:00:16,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:16,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:16,333 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 16:00:16,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:16,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193681317] [2021-10-08 16:00:16,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193681317] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:16,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:16,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 16:00:16,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911390340] [2021-10-08 16:00:16,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:00:16,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:16,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:00:16,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:00:16,336 INFO L87 Difference]: Start difference. First operand 2508 states and 8483 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:17,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:17,213 INFO L93 Difference]: Finished difference Result 3566 states and 12406 transitions. [2021-10-08 16:00:17,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 16:00:17,213 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 28 [2021-10-08 16:00:17,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:17,226 INFO L225 Difference]: With dead ends: 3566 [2021-10-08 16:00:17,227 INFO L226 Difference]: Without dead ends: 3462 [2021-10-08 16:00:17,227 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 343.6ms TimeCoverageRelationStatistics Valid=276, Invalid=780, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 16:00:17,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3462 states. [2021-10-08 16:00:17,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3462 to 2420. [2021-10-08 16:00:17,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2420 states, 2417 states have (on average 3.398014067025238) internal successors, (8213), 2419 states have internal predecessors, (8213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:17,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 8213 transitions. [2021-10-08 16:00:17,297 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 8213 transitions. Word has length 28 [2021-10-08 16:00:17,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:17,297 INFO L470 AbstractCegarLoop]: Abstraction has 2420 states and 8213 transitions. [2021-10-08 16:00:17,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:17,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 8213 transitions. [2021-10-08 16:00:17,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:00:17,302 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:17,302 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:17,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-10-08 16:00:17,303 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:17,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:17,303 INFO L82 PathProgramCache]: Analyzing trace with hash -923384988, now seen corresponding path program 10 times [2021-10-08 16:00:17,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:17,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943389012] [2021-10-08 16:00:17,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:17,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:17,427 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 16:00:17,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:17,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943389012] [2021-10-08 16:00:17,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943389012] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:17,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:17,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 16:00:17,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793501613] [2021-10-08 16:00:17,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:00:17,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:17,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:00:17,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:00:17,429 INFO L87 Difference]: Start difference. First operand 2420 states and 8213 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:18,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:18,199 INFO L93 Difference]: Finished difference Result 3530 states and 12250 transitions. [2021-10-08 16:00:18,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 16:00:18,200 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 28 [2021-10-08 16:00:18,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:18,214 INFO L225 Difference]: With dead ends: 3530 [2021-10-08 16:00:18,215 INFO L226 Difference]: Without dead ends: 3478 [2021-10-08 16:00:18,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 296.4ms TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-10-08 16:00:18,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3478 states. [2021-10-08 16:00:18,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3478 to 2492. [2021-10-08 16:00:18,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 2489 states have (on average 3.3696263559662514) internal successors, (8387), 2491 states have internal predecessors, (8387), 0 states have call successors, (0), 0 states 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 16:00:18,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 8387 transitions. [2021-10-08 16:00:18,298 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 8387 transitions. Word has length 28 [2021-10-08 16:00:18,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:18,298 INFO L470 AbstractCegarLoop]: Abstraction has 2492 states and 8387 transitions. [2021-10-08 16:00:18,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:18,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 8387 transitions. [2021-10-08 16:00:18,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:00:18,304 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:18,304 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:18,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-10-08 16:00:18,304 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:18,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:18,305 INFO L82 PathProgramCache]: Analyzing trace with hash -923469666, now seen corresponding path program 10 times [2021-10-08 16:00:18,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:18,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045139742] [2021-10-08 16:00:18,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:18,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:18,466 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 16:00:18,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:18,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045139742] [2021-10-08 16:00:18,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045139742] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:18,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:18,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 16:00:18,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944529830] [2021-10-08 16:00:18,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:00:18,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:18,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:00:18,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:00:18,470 INFO L87 Difference]: Start difference. First operand 2492 states and 8387 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:19,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:19,252 INFO L93 Difference]: Finished difference Result 3494 states and 12158 transitions. [2021-10-08 16:00:19,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 16:00:19,253 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 28 [2021-10-08 16:00:19,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:19,263 INFO L225 Difference]: With dead ends: 3494 [2021-10-08 16:00:19,264 INFO L226 Difference]: Without dead ends: 2790 [2021-10-08 16:00:19,264 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 330.6ms TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-10-08 16:00:19,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2021-10-08 16:00:19,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 1980. [2021-10-08 16:00:19,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1980 states, 1977 states have (on average 3.315629742033384) internal successors, (6555), 1979 states have internal predecessors, (6555), 0 states have call successors, (0), 0 states 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 16:00:19,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 6555 transitions. [2021-10-08 16:00:19,324 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 6555 transitions. Word has length 28 [2021-10-08 16:00:19,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:19,324 INFO L470 AbstractCegarLoop]: Abstraction has 1980 states and 6555 transitions. [2021-10-08 16:00:19,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:19,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 6555 transitions. [2021-10-08 16:00:19,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:00:19,328 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:19,328 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:19,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-10-08 16:00:19,328 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:19,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:19,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1012450082, now seen corresponding path program 11 times [2021-10-08 16:00:19,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:19,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646763583] [2021-10-08 16:00:19,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:19,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:19,479 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 16:00:19,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:19,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646763583] [2021-10-08 16:00:19,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646763583] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:19,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:19,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 16:00:19,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119706491] [2021-10-08 16:00:19,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:00:19,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:19,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:00:19,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:00:19,482 INFO L87 Difference]: Start difference. First operand 1980 states and 6555 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:20,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:20,080 INFO L93 Difference]: Finished difference Result 2824 states and 9564 transitions. [2021-10-08 16:00:20,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 16:00:20,080 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 28 [2021-10-08 16:00:20,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:20,090 INFO L225 Difference]: With dead ends: 2824 [2021-10-08 16:00:20,090 INFO L226 Difference]: Without dead ends: 2764 [2021-10-08 16:00:20,090 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 259.4ms TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:00:20,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2021-10-08 16:00:20,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 1954. [2021-10-08 16:00:20,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1954 states, 1951 states have (on average 3.312660174269605) internal successors, (6463), 1953 states have internal predecessors, (6463), 0 states have call successors, (0), 0 states 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 16:00:20,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 6463 transitions. [2021-10-08 16:00:20,140 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 6463 transitions. Word has length 28 [2021-10-08 16:00:20,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:20,140 INFO L470 AbstractCegarLoop]: Abstraction has 1954 states and 6463 transitions. [2021-10-08 16:00:20,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:20,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 6463 transitions. [2021-10-08 16:00:20,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:00:20,145 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:20,145 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:20,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-10-08 16:00:20,146 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:20,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:20,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1012477241, now seen corresponding path program 29 times [2021-10-08 16:00:20,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:20,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928545857] [2021-10-08 16:00:20,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:20,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:20,283 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 16:00:20,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:20,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928545857] [2021-10-08 16:00:20,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928545857] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:20,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:20,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 16:00:20,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971219788] [2021-10-08 16:00:20,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:00:20,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:20,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:00:20,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:00:20,286 INFO L87 Difference]: Start difference. First operand 1954 states and 6463 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:21,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:21,016 INFO L93 Difference]: Finished difference Result 2788 states and 9456 transitions. [2021-10-08 16:00:21,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 16:00:21,017 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 28 [2021-10-08 16:00:21,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:21,034 INFO L225 Difference]: With dead ends: 2788 [2021-10-08 16:00:21,034 INFO L226 Difference]: Without dead ends: 2560 [2021-10-08 16:00:21,035 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 258.6ms TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:00:21,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2021-10-08 16:00:21,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 1750. [2021-10-08 16:00:21,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1750 states, 1747 states have (on average 3.3365769891242127) internal successors, (5829), 1749 states have internal predecessors, (5829), 0 states have call successors, (0), 0 states 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 16:00:21,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 5829 transitions. [2021-10-08 16:00:21,121 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 5829 transitions. Word has length 28 [2021-10-08 16:00:21,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:21,122 INFO L470 AbstractCegarLoop]: Abstraction has 1750 states and 5829 transitions. [2021-10-08 16:00:21,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:21,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 5829 transitions. [2021-10-08 16:00:21,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:00:21,130 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:21,130 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:21,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-10-08 16:00:21,130 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:21,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:21,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1067684642, now seen corresponding path program 12 times [2021-10-08 16:00:21,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:21,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668700486] [2021-10-08 16:00:21,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:21,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:21,280 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 16:00:21,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:21,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668700486] [2021-10-08 16:00:21,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668700486] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:21,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:21,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 16:00:21,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132541160] [2021-10-08 16:00:21,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:00:21,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:21,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:00:21,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:00:21,282 INFO L87 Difference]: Start difference. First operand 1750 states and 5829 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:21,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:21,854 INFO L93 Difference]: Finished difference Result 2552 states and 8769 transitions. [2021-10-08 16:00:21,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 16:00:21,854 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 28 [2021-10-08 16:00:21,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:21,861 INFO L225 Difference]: With dead ends: 2552 [2021-10-08 16:00:21,862 INFO L226 Difference]: Without dead ends: 2500 [2021-10-08 16:00:21,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 230.4ms TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:00:21,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2021-10-08 16:00:21,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 1690. [2021-10-08 16:00:21,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1690 states, 1688 states have (on average 3.375592417061611) internal successors, (5698), 1689 states have internal predecessors, (5698), 0 states have call successors, (0), 0 states 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 16:00:21,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 5698 transitions. [2021-10-08 16:00:21,900 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 5698 transitions. Word has length 28 [2021-10-08 16:00:21,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:21,900 INFO L470 AbstractCegarLoop]: Abstraction has 1690 states and 5698 transitions. [2021-10-08 16:00:21,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:21,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 5698 transitions. [2021-10-08 16:00:21,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:00:21,904 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:21,904 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:21,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-10-08 16:00:21,904 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:21,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:21,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1067769320, now seen corresponding path program 11 times [2021-10-08 16:00:21,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:21,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775195927] [2021-10-08 16:00:21,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:21,905 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:22,049 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 16:00:22,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:22,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775195927] [2021-10-08 16:00:22,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775195927] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:22,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:22,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 16:00:22,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612892218] [2021-10-08 16:00:22,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:00:22,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:22,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:00:22,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:00:22,051 INFO L87 Difference]: Start difference. First operand 1690 states and 5698 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:22,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:22,687 INFO L93 Difference]: Finished difference Result 2516 states and 8677 transitions. [2021-10-08 16:00:22,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 16:00:22,687 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 28 [2021-10-08 16:00:22,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:22,698 INFO L225 Difference]: With dead ends: 2516 [2021-10-08 16:00:22,698 INFO L226 Difference]: Without dead ends: 2340 [2021-10-08 16:00:22,699 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 259.6ms TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:00:22,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2340 states. [2021-10-08 16:00:22,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2340 to 1530. [2021-10-08 16:00:22,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 1528 states have (on average 3.391361256544503) internal successors, (5182), 1529 states have internal predecessors, (5182), 0 states have call successors, (0), 0 states 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 16:00:22,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 5182 transitions. [2021-10-08 16:00:22,755 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 5182 transitions. Word has length 28 [2021-10-08 16:00:22,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:22,755 INFO L470 AbstractCegarLoop]: Abstraction has 1530 states and 5182 transitions. [2021-10-08 16:00:22,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:22,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 5182 transitions. [2021-10-08 16:00:22,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:00:22,760 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:22,760 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:22,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-10-08 16:00:22,760 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:22,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:22,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1093811321, now seen corresponding path program 30 times [2021-10-08 16:00:22,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:22,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941812456] [2021-10-08 16:00:22,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:22,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:22,903 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 16:00:22,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:22,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941812456] [2021-10-08 16:00:22,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941812456] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:22,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:22,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 16:00:22,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223068465] [2021-10-08 16:00:22,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:00:22,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:22,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:00:22,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:00:22,906 INFO L87 Difference]: Start difference. First operand 1530 states and 5182 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:23,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:23,471 INFO L93 Difference]: Finished difference Result 2334 states and 8126 transitions. [2021-10-08 16:00:23,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 16:00:23,471 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 28 [2021-10-08 16:00:23,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:23,479 INFO L225 Difference]: With dead ends: 2334 [2021-10-08 16:00:23,479 INFO L226 Difference]: Without dead ends: 2294 [2021-10-08 16:00:23,479 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 236.5ms TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:00:23,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2021-10-08 16:00:23,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 1484. [2021-10-08 16:00:23,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1484 states, 1483 states have (on average 3.423465947403911) internal successors, (5077), 1483 states have internal predecessors, (5077), 0 states have call successors, (0), 0 states 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 16:00:23,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 5077 transitions. [2021-10-08 16:00:23,523 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 5077 transitions. Word has length 28 [2021-10-08 16:00:23,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:23,523 INFO L470 AbstractCegarLoop]: Abstraction has 1484 states and 5077 transitions. [2021-10-08 16:00:23,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:23,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 5077 transitions. [2021-10-08 16:00:23,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:00:23,527 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:23,527 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:23,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-10-08 16:00:23,527 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:23,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:23,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1093868840, now seen corresponding path program 12 times [2021-10-08 16:00:23,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:23,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403990081] [2021-10-08 16:00:23,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:23,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:23,667 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 16:00:23,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:23,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403990081] [2021-10-08 16:00:23,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403990081] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:23,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:23,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 16:00:23,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641568106] [2021-10-08 16:00:23,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:00:23,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:23,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:00:23,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:00:23,670 INFO L87 Difference]: Start difference. First operand 1484 states and 5077 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:24,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:24,231 INFO L93 Difference]: Finished difference Result 2290 states and 8025 transitions. [2021-10-08 16:00:24,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 16:00:24,232 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 28 [2021-10-08 16:00:24,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:24,232 INFO L225 Difference]: With dead ends: 2290 [2021-10-08 16:00:24,232 INFO L226 Difference]: Without dead ends: 0 [2021-10-08 16:00:24,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 239.9ms TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:00:24,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-08 16:00:24,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-08 16:00:24,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:24,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-08 16:00:24,233 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-10-08 16:00:24,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:24,234 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-08 16:00:24,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16:00:24,234 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-08 16:00:24,234 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-08 16:00:24,238 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,238 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,238 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,239 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,239 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,239 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,239 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,239 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,239 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,240 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,240 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,240 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,240 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 16:00:24,240 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 16:00:24,240 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-08 16:00:24,241 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-08 16:00:24,241 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,241 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,241 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,241 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,242 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,242 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,242 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,242 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,242 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,242 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,243 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,243 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,243 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,243 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,243 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,243 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,243 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,244 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,244 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,244 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:00:24,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-10-08 16:00:24,252 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 16:00:24,252 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 16:00:24,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 04:00:24 BasicIcfg [2021-10-08 16:00:24,255 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 16:00:24,256 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-08 16:00:24,256 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-08 16:00:24,256 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-08 16:00:24,257 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 03:57:43" (3/4) ... [2021-10-08 16:00:24,260 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-08 16:00:24,268 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-08 16:00:24,268 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-08 16:00:24,268 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-08 16:00:24,268 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2021-10-08 16:00:24,275 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-08 16:00:24,275 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-08 16:00:24,275 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-08 16:00:24,276 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-08 16:00:24,337 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/weaver/parallel-ticket-4.wvr.c-witness.graphml [2021-10-08 16:00:24,338 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-08 16:00:24,340 INFO L168 Benchmark]: Toolchain (without parser) took 162182.83 ms. Allocated memory was 157.3 MB in the beginning and 6.8 GB in the end (delta: 6.6 GB). Free memory was 132.7 MB in the beginning and 2.9 GB in the end (delta: -2.7 GB). Peak memory consumption was 3.9 GB. Max. memory is 8.0 GB. [2021-10-08 16:00:24,341 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 157.3 MB. Free memory is still 127.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 16:00:24,342 INFO L168 Benchmark]: CACSL2BoogieTranslator took 467.33 ms. Allocated memory is still 157.3 MB. Free memory was 132.1 MB in the beginning and 121.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-08 16:00:24,343 INFO L168 Benchmark]: Boogie Procedure Inliner took 128.52 ms. Allocated memory is still 157.3 MB. Free memory was 121.3 MB in the beginning and 119.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:00:24,343 INFO L168 Benchmark]: Boogie Preprocessor took 84.55 ms. Allocated memory is still 157.3 MB. Free memory was 119.1 MB in the beginning and 117.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 16:00:24,343 INFO L168 Benchmark]: RCFGBuilder took 1143.60 ms. Allocated memory is still 157.3 MB. Free memory was 117.7 MB in the beginning and 133.0 MB in the end (delta: -15.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2021-10-08 16:00:24,344 INFO L168 Benchmark]: TraceAbstraction took 160259.16 ms. Allocated memory was 157.3 MB in the beginning and 6.8 GB in the end (delta: 6.6 GB). Free memory was 132.5 MB in the beginning and 2.9 GB in the end (delta: -2.7 GB). Peak memory consumption was 3.9 GB. Max. memory is 8.0 GB. [2021-10-08 16:00:24,344 INFO L168 Benchmark]: Witness Printer took 81.65 ms. Allocated memory is still 6.8 GB. Free memory was 2.9 GB in the beginning and 2.9 GB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:00:24,347 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 157.3 MB. Free memory is still 127.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 467.33 ms. Allocated memory is still 157.3 MB. Free memory was 132.1 MB in the beginning and 121.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 128.52 ms. Allocated memory is still 157.3 MB. Free memory was 121.3 MB in the beginning and 119.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 84.55 ms. Allocated memory is still 157.3 MB. Free memory was 119.1 MB in the beginning and 117.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1143.60 ms. Allocated memory is still 157.3 MB. Free memory was 117.7 MB in the beginning and 133.0 MB in the end (delta: -15.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 160259.16 ms. Allocated memory was 157.3 MB in the beginning and 6.8 GB in the end (delta: 6.6 GB). Free memory was 132.5 MB in the beginning and 2.9 GB in the end (delta: -2.7 GB). Peak memory consumption was 3.9 GB. Max. memory is 8.0 GB. * Witness Printer took 81.65 ms. Allocated memory is still 6.8 GB. Free memory was 2.9 GB in the beginning and 2.9 GB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8173.5ms, 192 PlacesBefore, 71 PlacesAfterwards, 185 TransitionsBefore, 60 TransitionsAfterwards, 6996 CoEnabledTransitionPairs, 7 FixpointIterations, 72 TrivialSequentialCompositions, 70 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 6 ConcurrentYvCompositions, 4 ChoiceCompositions, 161 TotalNumberOfCompositions, 18580 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11616, positive: 11321, positive conditional: 0, positive unconditional: 11321, negative: 295, negative conditional: 0, negative unconditional: 295, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4911, positive: 4832, positive conditional: 0, positive unconditional: 4832, negative: 79, negative conditional: 0, negative unconditional: 79, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4911, positive: 4785, positive conditional: 0, positive unconditional: 4785, negative: 126, negative conditional: 0, negative unconditional: 126, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 126, positive: 47, positive conditional: 0, positive unconditional: 47, negative: 79, negative conditional: 0, negative unconditional: 79, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 257, positive: 54, positive conditional: 0, positive unconditional: 54, negative: 204, negative conditional: 0, negative unconditional: 204, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 11616, positive: 6489, positive conditional: 0, positive unconditional: 6489, negative: 216, negative conditional: 0, negative unconditional: 216, unknown: 4911, unknown conditional: 0, unknown unconditional: 4911] , Statistics on independence cache: Total cache size (in pairs): 773, Positive cache size: 738, Positive conditional cache size: 0, Positive unconditional cache size: 738, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 71]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 71]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 76]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 76]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 261 locations, 36 error locations. Started 1 CEGAR loops. OverallTime: 159999.8ms, OverallIterations: 113, TraceHistogramMax: 1, EmptinessCheckTime: 1172.9ms, AutomataDifference: 104784.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10031.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11277 SDtfs, 30560 SDslu, 58194 SDs, 0 SdLazy, 67091 SolverSat, 7223 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47151.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3142 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3081 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19461 ImplicationChecksByTransitivity, 33178.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26652occurred in iteration=2, InterpolantAutomatonStates: 2641, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 27633.6ms AutomataMinimizationTime, 113 MinimizatonAttempts, 267730 StatesRemovedByMinimization, 108 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 236.7ms SsaConstructionTime, 1678.6ms SatisfiabilityAnalysisTime, 13139.4ms InterpolantComputationTime, 2760 NumberOfCodeBlocks, 2760 NumberOfCodeBlocksAsserted, 113 NumberOfCheckSat, 2647 ConstructedInterpolants, 0 QuantifiedInterpolants, 15281 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 113 InterpolantComputations, 113 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-08 16:00:24,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...