/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 [2021-10-07 14:55:36,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 14:55:36,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 14:55:36,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 14:55:37,075 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-07 14:55:37,103 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 14:55:37,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 14:55:37,104 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 14:55:37,104 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 14:55:37,106 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 14:55:37,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 14:55:37,107 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 14:55:37,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 14:55:37,107 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 14:55:37,108 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 14:55:37,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 14:55:37,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 14:55:37,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 14:55:37,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-07 14:55:37,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 14:55:37,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-07 14:55:37,109 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-07 14:55:37,110 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 14:55:37,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-07 14:55:37,110 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 14:55:37,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-07 14:55:37,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 14:55:37,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 14:55:37,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 14:55:37,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 14:55:37,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 14:55:37,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 14:55:37,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-07 14:55:37,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-07 14:55:37,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-07 14:55:37,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-07 14:55:37,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 14:55:37,113 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 14:55:37,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 14:55:37,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 14:55:37,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 14:55:37,594 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 14:55:37,595 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 14:55:37,596 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2021-10-07 14:55:37,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce8011174/a8fcb1ea6eda488db0232dd49e1b9898/FLAG2bf0a6cd5 [2021-10-07 14:55:38,306 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 14:55:38,307 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2021-10-07 14:55:38,317 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce8011174/a8fcb1ea6eda488db0232dd49e1b9898/FLAG2bf0a6cd5 [2021-10-07 14:55:38,673 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce8011174/a8fcb1ea6eda488db0232dd49e1b9898 [2021-10-07 14:55:38,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 14:55:38,688 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-07 14:55:38,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 14:55:38,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 14:55:38,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 14:55:38,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:55:38" (1/1) ... [2021-10-07 14:55:38,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20f97744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:55:38, skipping insertion in model container [2021-10-07 14:55:38,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:55:38" (1/1) ... [2021-10-07 14:55:38,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 14:55:38,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 14:55:39,020 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] [2021-10-07 14:55:39,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 14:55:39,032 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 14:55:39,095 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] [2021-10-07 14:55:39,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 14:55:39,122 INFO L208 MainTranslator]: Completed translation [2021-10-07 14:55:39,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:55:39 WrapperNode [2021-10-07 14:55:39,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 14:55:39,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 14:55:39,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 14:55:39,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 14:55:39,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:55:39" (1/1) ... [2021-10-07 14:55:39,140 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:55:39" (1/1) ... [2021-10-07 14:55:39,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 14:55:39,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 14:55:39,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 14:55:39,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 14:55:39,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:55:39" (1/1) ... [2021-10-07 14:55:39,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:55:39" (1/1) ... [2021-10-07 14:55:39,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:55:39" (1/1) ... [2021-10-07 14:55:39,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:55:39" (1/1) ... [2021-10-07 14:55:39,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:55:39" (1/1) ... [2021-10-07 14:55:39,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:55:39" (1/1) ... [2021-10-07 14:55:39,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:55:39" (1/1) ... [2021-10-07 14:55:39,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 14:55:39,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 14:55:39,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 14:55:39,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 14:55:39,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:55:39" (1/1) ... [2021-10-07 14:55:39,278 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 14:55:39,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:39,312 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 14:55:39,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 14:55:39,373 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 14:55:39,374 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 14:55:39,374 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 14:55:39,374 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 14:55:39,374 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-07 14:55:39,374 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-07 14:55:39,375 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-07 14:55:39,375 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-07 14:55:39,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-07 14:55:39,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 14:55:39,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-07 14:55:39,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 14:55:39,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 14:55:39,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 14:55:39,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 14:55:39,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-07 14:55:39,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 14:55:39,378 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 14:55:40,082 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 14:55:40,083 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-07 14:55:40,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:55:40 BoogieIcfgContainer [2021-10-07 14:55:40,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 14:55:40,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 14:55:40,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 14:55:40,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 14:55:40,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:55:38" (1/3) ... [2021-10-07 14:55:40,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2a0826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:55:40, skipping insertion in model container [2021-10-07 14:55:40,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:55:39" (2/3) ... [2021-10-07 14:55:40,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2a0826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:55:40, skipping insertion in model container [2021-10-07 14:55:40,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:55:40" (3/3) ... [2021-10-07 14:55:40,098 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2021-10-07 14:55:40,105 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-07 14:55:40,105 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 14:55:40,106 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-10-07 14:55:40,106 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 14:55:40,147 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,148 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,148 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,149 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,149 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,149 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,149 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,150 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,150 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,150 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,150 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,150 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,151 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,151 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,151 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,151 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,152 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,152 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,152 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,152 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,153 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,153 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,153 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,153 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,154 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,154 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,154 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,154 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,155 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,155 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,155 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,155 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,156 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,156 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,156 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,156 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,157 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,157 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,158 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,158 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,158 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,159 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,159 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,159 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,159 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,160 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,163 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,163 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,163 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,164 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,164 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,164 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,164 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,164 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,165 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,165 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,165 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,165 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,166 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,166 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,166 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,166 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,167 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,167 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,167 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,167 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,168 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,168 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,168 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,168 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,169 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,169 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,170 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,170 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,170 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,171 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,171 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,171 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,171 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,172 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,172 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,172 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,172 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,173 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,173 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,173 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,173 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,173 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,174 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,174 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,174 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,174 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,175 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,175 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,175 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,175 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,176 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,176 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,176 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,176 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,177 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,177 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,177 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,177 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,178 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,178 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,178 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,178 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,179 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,179 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,180 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,180 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,180 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,180 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,181 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,181 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,181 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,181 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,182 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,182 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,182 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,182 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,183 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,183 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,183 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,183 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,183 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,184 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,184 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,184 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,184 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,184 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,185 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,185 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,185 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,185 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,186 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,186 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,186 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,186 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,186 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,187 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,187 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,187 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,191 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,191 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,191 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,192 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,192 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,192 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,194 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,195 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,195 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,195 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,195 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,196 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,198 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,198 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,198 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,198 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,199 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,199 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,201 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,201 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,201 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,201 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,202 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,202 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:40,213 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-07 14:55:40,272 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 14:55:40,280 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 14:55:40,280 INFO L340 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2021-10-07 14:55:40,301 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 14:55:40,314 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 185 transitions, 402 flow [2021-10-07 14:55:40,318 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 185 transitions, 402 flow [2021-10-07 14:55:40,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 192 places, 185 transitions, 402 flow [2021-10-07 14:55:40,407 INFO L129 PetriNetUnfolder]: 6/181 cut-off events. [2021-10-07 14:55:40,408 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-07 14:55:40,415 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. [2021-10-07 14:55:40,424 INFO L116 LiptonReduction]: Number of co-enabled transitions 6996 [2021-10-07 14:55:47,399 INFO L131 LiptonReduction]: Checked pairs total: 18580 [2021-10-07 14:55:47,399 INFO L133 LiptonReduction]: Total number of compositions: 161 [2021-10-07 14:55:47,409 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 60 transitions, 152 flow [2021-10-07 14:55:49,020 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) [2021-10-07 14:55:49,111 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) [2021-10-07 14:55:49,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 14:55:49,118 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:49,118 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 14:55:49,186 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:55:49,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:49,209 INFO L82 PathProgramCache]: Analyzing trace with hash 705625, now seen corresponding path program 1 times [2021-10-07 14:55:49,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:49,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074259604] [2021-10-07 14:55:49,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:49,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:49,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:55:49,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:49,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074259604] [2021-10-07 14:55:49,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074259604] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:49,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:49,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 14:55:49,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80261484] [2021-10-07 14:55:49,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:55:49,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:49,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:55:49,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:55:49,685 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) [2021-10-07 14:55:50,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:50,714 INFO L93 Difference]: Finished difference Result 26416 states and 106174 transitions. [2021-10-07 14:55:50,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:55:50,717 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 [2021-10-07 14:55:50,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:51,352 INFO L225 Difference]: With dead ends: 26416 [2021-10-07 14:55:51,352 INFO L226 Difference]: Without dead ends: 26372 [2021-10-07 14:55:51,354 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:55:51,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26372 states. [2021-10-07 14:55:53,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26372 to 26372. [2021-10-07 14:55:53,109 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) [2021-10-07 14:55:53,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26372 states to 26372 states and 105996 transitions. [2021-10-07 14:55:53,604 INFO L78 Accepts]: Start accepts. Automaton has 26372 states and 105996 transitions. Word has length 3 [2021-10-07 14:55:53,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:53,605 INFO L470 AbstractCegarLoop]: Abstraction has 26372 states and 105996 transitions. [2021-10-07 14:55:53,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:53,606 INFO L276 IsEmpty]: Start isEmpty. Operand 26372 states and 105996 transitions. [2021-10-07 14:55:53,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 14:55:53,607 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:53,607 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 14:55:53,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-07 14:55:53,608 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:55:53,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:53,608 INFO L82 PathProgramCache]: Analyzing trace with hash -452863311, now seen corresponding path program 1 times [2021-10-07 14:55:53,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:53,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275383240] [2021-10-07 14:55:53,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:53,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:53,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:55:53,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:53,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275383240] [2021-10-07 14:55:53,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275383240] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:53,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:53,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:55:53,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451956010] [2021-10-07 14:55:53,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:55:53,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:53,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:55:53,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:55:53,691 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) [2021-10-07 14:55:54,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:54,342 INFO L93 Difference]: Finished difference Result 32036 states and 121305 transitions. [2021-10-07 14:55:54,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:55:54,343 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 [2021-10-07 14:55:54,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:54,902 INFO L225 Difference]: With dead ends: 32036 [2021-10-07 14:55:54,903 INFO L226 Difference]: Without dead ends: 32036 [2021-10-07 14:55:54,904 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:55:55,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32036 states. [2021-10-07 14:55:56,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32036 to 26652. [2021-10-07 14:55:56,496 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) [2021-10-07 14:55:56,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26652 states to 26652 states and 106637 transitions. [2021-10-07 14:55:56,675 INFO L78 Accepts]: Start accepts. Automaton has 26652 states and 106637 transitions. Word has length 6 [2021-10-07 14:55:56,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:56,676 INFO L470 AbstractCegarLoop]: Abstraction has 26652 states and 106637 transitions. [2021-10-07 14:55:56,677 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) [2021-10-07 14:55:56,677 INFO L276 IsEmpty]: Start isEmpty. Operand 26652 states and 106637 transitions. [2021-10-07 14:55:56,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 14:55:56,678 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:56,678 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 14:55:56,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-07 14:55:56,679 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:55:56,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:56,690 INFO L82 PathProgramCache]: Analyzing trace with hash -452863310, now seen corresponding path program 1 times [2021-10-07 14:55:56,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:56,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918256674] [2021-10-07 14:55:56,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:56,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:56,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:55:56,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:56,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918256674] [2021-10-07 14:55:56,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918256674] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:56,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:56,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:55:56,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873271066] [2021-10-07 14:55:56,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:55:56,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:56,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:55:56,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:55:56,800 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) [2021-10-07 14:55:57,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:57,270 INFO L93 Difference]: Finished difference Result 17346 states and 68746 transitions. [2021-10-07 14:55:57,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:55:57,271 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 [2021-10-07 14:55:57,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:57,534 INFO L225 Difference]: With dead ends: 17346 [2021-10-07 14:55:57,534 INFO L226 Difference]: Without dead ends: 17346 [2021-10-07 14:55:57,535 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:55:57,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17346 states. [2021-10-07 14:55:58,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17346 to 17346. [2021-10-07 14:55:58,363 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) [2021-10-07 14:55:58,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17346 states to 17346 states and 68746 transitions. [2021-10-07 14:55:58,474 INFO L78 Accepts]: Start accepts. Automaton has 17346 states and 68746 transitions. Word has length 6 [2021-10-07 14:55:58,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:58,475 INFO L470 AbstractCegarLoop]: Abstraction has 17346 states and 68746 transitions. [2021-10-07 14:55:58,475 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) [2021-10-07 14:55:58,475 INFO L276 IsEmpty]: Start isEmpty. Operand 17346 states and 68746 transitions. [2021-10-07 14:55:58,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 14:55:58,476 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:58,476 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:58,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-07 14:55:58,476 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:55:58,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:58,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1155001178, now seen corresponding path program 1 times [2021-10-07 14:55:58,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:58,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803519395] [2021-10-07 14:55:58,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:58,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:58,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:55:58,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:58,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803519395] [2021-10-07 14:55:58,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803519395] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:58,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:58,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-07 14:55:58,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711250691] [2021-10-07 14:55:58,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:55:58,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:58,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:55:58,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:55:58,553 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) [2021-10-07 14:55:58,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:58,870 INFO L93 Difference]: Finished difference Result 21798 states and 81905 transitions. [2021-10-07 14:55:58,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:55:58,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 14:55:58,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:59,021 INFO L225 Difference]: With dead ends: 21798 [2021-10-07 14:55:59,022 INFO L226 Difference]: Without dead ends: 21798 [2021-10-07 14:55:59,022 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.2ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:55:59,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21798 states. [2021-10-07 14:56:00,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21798 to 16390. [2021-10-07 14:56:00,128 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) [2021-10-07 14:56:00,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16390 states to 16390 states and 60422 transitions. [2021-10-07 14:56:00,235 INFO L78 Accepts]: Start accepts. Automaton has 16390 states and 60422 transitions. Word has length 7 [2021-10-07 14:56:00,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:00,236 INFO L470 AbstractCegarLoop]: Abstraction has 16390 states and 60422 transitions. [2021-10-07 14:56:00,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:00,236 INFO L276 IsEmpty]: Start isEmpty. Operand 16390 states and 60422 transitions. [2021-10-07 14:56:00,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 14:56:00,247 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:00,247 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:56:00,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-07 14:56:00,249 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:00,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:00,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1155001133, now seen corresponding path program 1 times [2021-10-07 14:56:00,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:00,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742856233] [2021-10-07 14:56:00,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:00,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:00,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:00,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:00,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742856233] [2021-10-07 14:56:00,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742856233] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:00,703 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:00,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-07 14:56:00,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479796775] [2021-10-07 14:56:00,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:56:00,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:00,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:56:00,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:56:00,707 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) [2021-10-07 14:56:00,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:00,989 INFO L93 Difference]: Finished difference Result 14700 states and 53689 transitions. [2021-10-07 14:56:00,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:56:00,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 14:56:00,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:01,061 INFO L225 Difference]: With dead ends: 14700 [2021-10-07 14:56:01,062 INFO L226 Difference]: Without dead ends: 14700 [2021-10-07 14:56:01,062 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:56:01,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14700 states. [2021-10-07 14:56:01,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14700 to 11932. [2021-10-07 14:56:01,478 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) [2021-10-07 14:56:01,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11932 states to 11932 states and 42555 transitions. [2021-10-07 14:56:01,775 INFO L78 Accepts]: Start accepts. Automaton has 11932 states and 42555 transitions. Word has length 7 [2021-10-07 14:56:01,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:01,776 INFO L470 AbstractCegarLoop]: Abstraction has 11932 states and 42555 transitions. [2021-10-07 14:56:01,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:01,776 INFO L276 IsEmpty]: Start isEmpty. Operand 11932 states and 42555 transitions. [2021-10-07 14:56:01,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 14:56:01,778 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:01,778 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:56:01,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-07 14:56:01,778 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:01,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:01,779 INFO L82 PathProgramCache]: Analyzing trace with hash -757918546, now seen corresponding path program 1 times [2021-10-07 14:56:01,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:01,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266150961] [2021-10-07 14:56:01,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:01,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:01,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:01,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:01,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266150961] [2021-10-07 14:56:01,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266150961] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:01,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:01,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-07 14:56:01,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23662556] [2021-10-07 14:56:01,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:56:01,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:01,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:56:01,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:56:01,883 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) [2021-10-07 14:56:02,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:02,027 INFO L93 Difference]: Finished difference Result 10412 states and 36512 transitions. [2021-10-07 14:56:02,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:56:02,028 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 [2021-10-07 14:56:02,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:02,089 INFO L225 Difference]: With dead ends: 10412 [2021-10-07 14:56:02,090 INFO L226 Difference]: Without dead ends: 10412 [2021-10-07 14:56:02,090 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:56:02,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10412 states. [2021-10-07 14:56:02,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10412 to 10412. [2021-10-07 14:56:02,399 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) [2021-10-07 14:56:02,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10412 states to 10412 states and 36512 transitions. [2021-10-07 14:56:02,454 INFO L78 Accepts]: Start accepts. Automaton has 10412 states and 36512 transitions. Word has length 9 [2021-10-07 14:56:02,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:02,455 INFO L470 AbstractCegarLoop]: Abstraction has 10412 states and 36512 transitions. [2021-10-07 14:56:02,455 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) [2021-10-07 14:56:02,455 INFO L276 IsEmpty]: Start isEmpty. Operand 10412 states and 36512 transitions. [2021-10-07 14:56:02,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 14:56:02,467 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:02,468 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:56:02,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-07 14:56:02,468 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:02,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:02,469 INFO L82 PathProgramCache]: Analyzing trace with hash -502753546, now seen corresponding path program 1 times [2021-10-07 14:56:02,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:02,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379000437] [2021-10-07 14:56:02,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:02,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:02,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:02,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:02,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379000437] [2021-10-07 14:56:02,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379000437] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:02,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:02,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-07 14:56:02,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090151905] [2021-10-07 14:56:02,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 14:56:02,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:02,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 14:56:02,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:56:02,596 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) [2021-10-07 14:56:02,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:02,915 INFO L93 Difference]: Finished difference Result 8298 states and 28347 transitions. [2021-10-07 14:56:02,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 14:56:02,916 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 [2021-10-07 14:56:02,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:02,955 INFO L225 Difference]: With dead ends: 8298 [2021-10-07 14:56:02,955 INFO L226 Difference]: Without dead ends: 8298 [2021-10-07 14:56:02,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:56:02,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8298 states. [2021-10-07 14:56:03,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8298 to 8298. [2021-10-07 14:56:03,234 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) [2021-10-07 14:56:03,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8298 states to 8298 states and 28347 transitions. [2021-10-07 14:56:03,284 INFO L78 Accepts]: Start accepts. Automaton has 8298 states and 28347 transitions. Word has length 12 [2021-10-07 14:56:03,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:03,286 INFO L470 AbstractCegarLoop]: Abstraction has 8298 states and 28347 transitions. [2021-10-07 14:56:03,286 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) [2021-10-07 14:56:03,286 INFO L276 IsEmpty]: Start isEmpty. Operand 8298 states and 28347 transitions. [2021-10-07 14:56:03,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 14:56:03,291 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:03,291 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:56:03,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-07 14:56:03,291 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:03,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:03,294 INFO L82 PathProgramCache]: Analyzing trace with hash -789572342, now seen corresponding path program 1 times [2021-10-07 14:56:03,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:03,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673637125] [2021-10-07 14:56:03,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:03,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:03,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:03,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:03,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673637125] [2021-10-07 14:56:03,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673637125] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:03,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:03,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-07 14:56:03,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323661770] [2021-10-07 14:56:03,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 14:56:03,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:03,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 14:56:03,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-07 14:56:03,456 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) [2021-10-07 14:56:03,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:03,946 INFO L93 Difference]: Finished difference Result 10450 states and 36083 transitions. [2021-10-07 14:56:03,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 14:56:03,946 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 [2021-10-07 14:56:03,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:03,996 INFO L225 Difference]: With dead ends: 10450 [2021-10-07 14:56:03,997 INFO L226 Difference]: Without dead ends: 10450 [2021-10-07 14:56:03,997 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 79.0ms TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:56:04,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10450 states. [2021-10-07 14:56:04,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10450 to 8380. [2021-10-07 14:56:04,559 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) [2021-10-07 14:56:04,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8380 states to 8380 states and 28244 transitions. [2021-10-07 14:56:04,593 INFO L78 Accepts]: Start accepts. Automaton has 8380 states and 28244 transitions. Word has length 14 [2021-10-07 14:56:04,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:04,593 INFO L470 AbstractCegarLoop]: Abstraction has 8380 states and 28244 transitions. [2021-10-07 14:56:04,593 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) [2021-10-07 14:56:04,594 INFO L276 IsEmpty]: Start isEmpty. Operand 8380 states and 28244 transitions. [2021-10-07 14:56:04,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 14:56:04,597 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:04,597 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:56:04,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-07 14:56:04,597 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:04,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:04,598 INFO L82 PathProgramCache]: Analyzing trace with hash -789572297, now seen corresponding path program 1 times [2021-10-07 14:56:04,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:04,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251166685] [2021-10-07 14:56:04,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:04,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:04,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:04,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:04,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251166685] [2021-10-07 14:56:04,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251166685] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:04,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:04,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-07 14:56:04,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099387219] [2021-10-07 14:56:04,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:56:04,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:04,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:56:04,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:56:04,634 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) [2021-10-07 14:56:04,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:04,752 INFO L93 Difference]: Finished difference Result 8438 states and 27964 transitions. [2021-10-07 14:56:04,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:56:04,752 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 [2021-10-07 14:56:04,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:04,784 INFO L225 Difference]: With dead ends: 8438 [2021-10-07 14:56:04,785 INFO L226 Difference]: Without dead ends: 8370 [2021-10-07 14:56:04,785 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:56:04,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8370 states. [2021-10-07 14:56:04,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8370 to 7836. [2021-10-07 14:56:05,004 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) [2021-10-07 14:56:05,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7836 states to 7836 states and 26637 transitions. [2021-10-07 14:56:05,032 INFO L78 Accepts]: Start accepts. Automaton has 7836 states and 26637 transitions. Word has length 14 [2021-10-07 14:56:05,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:05,032 INFO L470 AbstractCegarLoop]: Abstraction has 7836 states and 26637 transitions. [2021-10-07 14:56:05,032 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) [2021-10-07 14:56:05,032 INFO L276 IsEmpty]: Start isEmpty. Operand 7836 states and 26637 transitions. [2021-10-07 14:56:05,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 14:56:05,034 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:05,035 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:56:05,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-07 14:56:05,035 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:05,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:05,036 INFO L82 PathProgramCache]: Analyzing trace with hash -974861369, now seen corresponding path program 1 times [2021-10-07 14:56:05,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:05,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66750052] [2021-10-07 14:56:05,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:05,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:05,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:05,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:05,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66750052] [2021-10-07 14:56:05,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66750052] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:05,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:05,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-07 14:56:05,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371010846] [2021-10-07 14:56:05,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:56:05,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:05,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:56:05,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:56:05,079 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) [2021-10-07 14:56:05,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:05,200 INFO L93 Difference]: Finished difference Result 7474 states and 25065 transitions. [2021-10-07 14:56:05,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:56:05,201 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 [2021-10-07 14:56:05,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:05,233 INFO L225 Difference]: With dead ends: 7474 [2021-10-07 14:56:05,233 INFO L226 Difference]: Without dead ends: 7474 [2021-10-07 14:56:05,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:56:05,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7474 states. [2021-10-07 14:56:05,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7474 to 6492. [2021-10-07 14:56:05,631 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) [2021-10-07 14:56:05,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6492 states to 6492 states and 22662 transitions. [2021-10-07 14:56:05,663 INFO L78 Accepts]: Start accepts. Automaton has 6492 states and 22662 transitions. Word has length 14 [2021-10-07 14:56:05,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:05,664 INFO L470 AbstractCegarLoop]: Abstraction has 6492 states and 22662 transitions. [2021-10-07 14:56:05,664 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) [2021-10-07 14:56:05,664 INFO L276 IsEmpty]: Start isEmpty. Operand 6492 states and 22662 transitions. [2021-10-07 14:56:05,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 14:56:05,668 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:05,668 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:56:05,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-07 14:56:05,669 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:05,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:05,669 INFO L82 PathProgramCache]: Analyzing trace with hash -974861413, now seen corresponding path program 1 times [2021-10-07 14:56:05,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:05,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090670909] [2021-10-07 14:56:05,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:05,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:05,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:05,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:05,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090670909] [2021-10-07 14:56:05,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090670909] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:05,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:05,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-07 14:56:05,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325886631] [2021-10-07 14:56:05,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 14:56:05,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:05,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 14:56:05,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-07 14:56:05,810 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) [2021-10-07 14:56:06,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:06,146 INFO L93 Difference]: Finished difference Result 8452 states and 29931 transitions. [2021-10-07 14:56:06,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 14:56:06,146 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 [2021-10-07 14:56:06,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:06,185 INFO L225 Difference]: With dead ends: 8452 [2021-10-07 14:56:06,186 INFO L226 Difference]: Without dead ends: 8326 [2021-10-07 14:56:06,186 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 68.2ms TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:56:06,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8326 states. [2021-10-07 14:56:06,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8326 to 6090. [2021-10-07 14:56:06,354 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) [2021-10-07 14:56:06,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6090 states to 6090 states and 20979 transitions. [2021-10-07 14:56:06,373 INFO L78 Accepts]: Start accepts. Automaton has 6090 states and 20979 transitions. Word has length 14 [2021-10-07 14:56:06,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:06,374 INFO L470 AbstractCegarLoop]: Abstraction has 6090 states and 20979 transitions. [2021-10-07 14:56:06,374 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) [2021-10-07 14:56:06,374 INFO L276 IsEmpty]: Start isEmpty. Operand 6090 states and 20979 transitions. [2021-10-07 14:56:06,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 14:56:06,379 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:06,379 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:56:06,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-07 14:56:06,379 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:06,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:06,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1233727079, now seen corresponding path program 1 times [2021-10-07 14:56:06,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:06,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098521084] [2021-10-07 14:56:06,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:06,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:06,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:06,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:06,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098521084] [2021-10-07 14:56:06,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098521084] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:06,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:06,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-07 14:56:06,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204891797] [2021-10-07 14:56:06,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 14:56:06,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:06,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 14:56:06,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-07 14:56:06,474 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) [2021-10-07 14:56:06,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:06,822 INFO L93 Difference]: Finished difference Result 8290 states and 29228 transitions. [2021-10-07 14:56:06,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 14:56:06,822 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 [2021-10-07 14:56:06,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:06,847 INFO L225 Difference]: With dead ends: 8290 [2021-10-07 14:56:06,847 INFO L226 Difference]: Without dead ends: 8074 [2021-10-07 14:56:06,848 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 65.5ms TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:56:06,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8074 states. [2021-10-07 14:56:07,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8074 to 5978. [2021-10-07 14:56:07,159 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) [2021-10-07 14:56:07,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5978 states to 5978 states and 20541 transitions. [2021-10-07 14:56:07,179 INFO L78 Accepts]: Start accepts. Automaton has 5978 states and 20541 transitions. Word has length 15 [2021-10-07 14:56:07,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:07,179 INFO L470 AbstractCegarLoop]: Abstraction has 5978 states and 20541 transitions. [2021-10-07 14:56:07,179 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) [2021-10-07 14:56:07,179 INFO L276 IsEmpty]: Start isEmpty. Operand 5978 states and 20541 transitions. [2021-10-07 14:56:07,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 14:56:07,186 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:07,186 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:56:07,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-07 14:56:07,186 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:07,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:07,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1355512607, now seen corresponding path program 1 times [2021-10-07 14:56:07,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:07,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297615011] [2021-10-07 14:56:07,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:07,187 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:07,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:07,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:07,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297615011] [2021-10-07 14:56:07,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297615011] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:07,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:07,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-07 14:56:07,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525196665] [2021-10-07 14:56:07,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 14:56:07,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:07,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 14:56:07,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-07 14:56:07,284 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) [2021-10-07 14:56:07,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:07,587 INFO L93 Difference]: Finished difference Result 8052 states and 28376 transitions. [2021-10-07 14:56:07,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 14:56:07,588 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 [2021-10-07 14:56:07,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:07,615 INFO L225 Difference]: With dead ends: 8052 [2021-10-07 14:56:07,615 INFO L226 Difference]: Without dead ends: 7740 [2021-10-07 14:56:07,616 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 58.0ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:56:07,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7740 states. [2021-10-07 14:56:07,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7740 to 5864. [2021-10-07 14:56:07,782 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) [2021-10-07 14:56:07,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5864 states to 5864 states and 20202 transitions. [2021-10-07 14:56:07,808 INFO L78 Accepts]: Start accepts. Automaton has 5864 states and 20202 transitions. Word has length 17 [2021-10-07 14:56:07,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:07,809 INFO L470 AbstractCegarLoop]: Abstraction has 5864 states and 20202 transitions. [2021-10-07 14:56:07,809 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) [2021-10-07 14:56:07,809 INFO L276 IsEmpty]: Start isEmpty. Operand 5864 states and 20202 transitions. [2021-10-07 14:56:07,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:56:07,824 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:07,824 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] [2021-10-07 14:56:07,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-07 14:56:07,825 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:07,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:07,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1812632362, now seen corresponding path program 1 times [2021-10-07 14:56:07,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:07,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46639228] [2021-10-07 14:56:07,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:07,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:07,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:07,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:07,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46639228] [2021-10-07 14:56:07,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46639228] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:07,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:07,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-07 14:56:07,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846443338] [2021-10-07 14:56:07,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 14:56:07,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:07,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 14:56:07,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:56:07,937 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) [2021-10-07 14:56:08,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:08,765 INFO L93 Difference]: Finished difference Result 10376 states and 35765 transitions. [2021-10-07 14:56:08,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 14:56:08,766 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 [2021-10-07 14:56:08,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:08,801 INFO L225 Difference]: With dead ends: 10376 [2021-10-07 14:56:08,801 INFO L226 Difference]: Without dead ends: 10220 [2021-10-07 14:56:08,801 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 209.6ms TimeCoverageRelationStatistics Valid=190, Invalid=460, Unknown=0, NotChecked=0, Total=650 [2021-10-07 14:56:08,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10220 states. [2021-10-07 14:56:08,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10220 to 6736. [2021-10-07 14:56:09,008 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) [2021-10-07 14:56:09,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6736 states to 6736 states and 23111 transitions. [2021-10-07 14:56:09,037 INFO L78 Accepts]: Start accepts. Automaton has 6736 states and 23111 transitions. Word has length 21 [2021-10-07 14:56:09,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:09,037 INFO L470 AbstractCegarLoop]: Abstraction has 6736 states and 23111 transitions. [2021-10-07 14:56:09,038 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) [2021-10-07 14:56:09,038 INFO L276 IsEmpty]: Start isEmpty. Operand 6736 states and 23111 transitions. [2021-10-07 14:56:09,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:56:09,054 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:09,054 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] [2021-10-07 14:56:09,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-07 14:56:09,055 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:09,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:09,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1808651300, now seen corresponding path program 1 times [2021-10-07 14:56:09,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:09,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126129613] [2021-10-07 14:56:09,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:09,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:09,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:09,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:09,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126129613] [2021-10-07 14:56:09,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126129613] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:09,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:09,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-07 14:56:09,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690513240] [2021-10-07 14:56:09,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 14:56:09,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:09,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 14:56:09,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:56:09,170 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) [2021-10-07 14:56:09,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:09,945 INFO L93 Difference]: Finished difference Result 10498 states and 36031 transitions. [2021-10-07 14:56:09,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 14:56:09,945 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 [2021-10-07 14:56:09,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:09,979 INFO L225 Difference]: With dead ends: 10498 [2021-10-07 14:56:09,979 INFO L226 Difference]: Without dead ends: 10296 [2021-10-07 14:56:09,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 227.9ms TimeCoverageRelationStatistics Valid=190, Invalid=460, Unknown=0, NotChecked=0, Total=650 [2021-10-07 14:56:10,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10296 states. [2021-10-07 14:56:10,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10296 to 6994. [2021-10-07 14:56:10,310 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) [2021-10-07 14:56:10,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6994 states to 6994 states and 23929 transitions. [2021-10-07 14:56:10,333 INFO L78 Accepts]: Start accepts. Automaton has 6994 states and 23929 transitions. Word has length 21 [2021-10-07 14:56:10,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:10,333 INFO L470 AbstractCegarLoop]: Abstraction has 6994 states and 23929 transitions. [2021-10-07 14:56:10,334 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) [2021-10-07 14:56:10,334 INFO L276 IsEmpty]: Start isEmpty. Operand 6994 states and 23929 transitions. [2021-10-07 14:56:10,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:56:10,346 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:10,346 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] [2021-10-07 14:56:10,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-07 14:56:10,346 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:10,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:10,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1478049590, now seen corresponding path program 2 times [2021-10-07 14:56:10,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:10,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125805491] [2021-10-07 14:56:10,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:10,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:10,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:10,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:10,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125805491] [2021-10-07 14:56:10,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125805491] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:10,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:10,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-07 14:56:10,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768116256] [2021-10-07 14:56:10,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 14:56:10,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:10,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 14:56:10,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:56:10,457 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) [2021-10-07 14:56:11,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:11,284 INFO L93 Difference]: Finished difference Result 13776 states and 46140 transitions. [2021-10-07 14:56:11,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 14:56:11,284 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 [2021-10-07 14:56:11,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:11,349 INFO L225 Difference]: With dead ends: 13776 [2021-10-07 14:56:11,349 INFO L226 Difference]: Without dead ends: 13610 [2021-10-07 14:56:11,350 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 250.4ms TimeCoverageRelationStatistics Valid=231, Invalid=581, Unknown=0, NotChecked=0, Total=812 [2021-10-07 14:56:11,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13610 states. [2021-10-07 14:56:11,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13610 to 7344. [2021-10-07 14:56:11,653 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) [2021-10-07 14:56:11,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7344 states to 7344 states and 25008 transitions. [2021-10-07 14:56:11,682 INFO L78 Accepts]: Start accepts. Automaton has 7344 states and 25008 transitions. Word has length 21 [2021-10-07 14:56:11,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:11,682 INFO L470 AbstractCegarLoop]: Abstraction has 7344 states and 25008 transitions. [2021-10-07 14:56:11,683 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) [2021-10-07 14:56:11,683 INFO L276 IsEmpty]: Start isEmpty. Operand 7344 states and 25008 transitions. [2021-10-07 14:56:11,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:56:11,695 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:11,695 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] [2021-10-07 14:56:11,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-07 14:56:11,696 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:11,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:11,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1599596870, now seen corresponding path program 3 times [2021-10-07 14:56:11,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:11,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100350800] [2021-10-07 14:56:11,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:11,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:11,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:11,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:11,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100350800] [2021-10-07 14:56:11,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100350800] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:11,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:11,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-07 14:56:11,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059974790] [2021-10-07 14:56:11,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 14:56:11,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:11,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 14:56:11,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:56:11,801 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) [2021-10-07 14:56:12,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:12,825 INFO L93 Difference]: Finished difference Result 12102 states and 41891 transitions. [2021-10-07 14:56:12,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 14:56:12,825 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 [2021-10-07 14:56:12,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:12,857 INFO L225 Difference]: With dead ends: 12102 [2021-10-07 14:56:12,857 INFO L226 Difference]: Without dead ends: 11954 [2021-10-07 14:56:12,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 323.9ms TimeCoverageRelationStatistics Valid=286, Invalid=770, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 14:56:12,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11954 states. [2021-10-07 14:56:13,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11954 to 7212. [2021-10-07 14:56:13,032 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) [2021-10-07 14:56:13,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7212 states to 7212 states and 24623 transitions. [2021-10-07 14:56:13,070 INFO L78 Accepts]: Start accepts. Automaton has 7212 states and 24623 transitions. Word has length 21 [2021-10-07 14:56:13,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:13,071 INFO L470 AbstractCegarLoop]: Abstraction has 7212 states and 24623 transitions. [2021-10-07 14:56:13,071 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) [2021-10-07 14:56:13,071 INFO L276 IsEmpty]: Start isEmpty. Operand 7212 states and 24623 transitions. [2021-10-07 14:56:13,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:56:13,088 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:13,088 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] [2021-10-07 14:56:13,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-07 14:56:13,089 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:13,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:13,089 INFO L82 PathProgramCache]: Analyzing trace with hash -26215318, now seen corresponding path program 2 times [2021-10-07 14:56:13,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:13,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193192142] [2021-10-07 14:56:13,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:13,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:13,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:13,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:13,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193192142] [2021-10-07 14:56:13,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193192142] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:13,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:13,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-07 14:56:13,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923331547] [2021-10-07 14:56:13,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:56:13,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:13,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:56:13,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:56:13,207 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) [2021-10-07 14:56:14,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:14,108 INFO L93 Difference]: Finished difference Result 12096 states and 41573 transitions. [2021-10-07 14:56:14,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 14:56:14,108 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 [2021-10-07 14:56:14,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:14,141 INFO L225 Difference]: With dead ends: 12096 [2021-10-07 14:56:14,141 INFO L226 Difference]: Without dead ends: 11894 [2021-10-07 14:56:14,142 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 303.2ms TimeCoverageRelationStatistics Valid=292, Invalid=764, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 14:56:14,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11894 states. [2021-10-07 14:56:14,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11894 to 7716. [2021-10-07 14:56:14,375 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) [2021-10-07 14:56:14,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7716 states to 7716 states and 26482 transitions. [2021-10-07 14:56:14,399 INFO L78 Accepts]: Start accepts. Automaton has 7716 states and 26482 transitions. Word has length 21 [2021-10-07 14:56:14,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:14,400 INFO L470 AbstractCegarLoop]: Abstraction has 7716 states and 26482 transitions. [2021-10-07 14:56:14,400 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) [2021-10-07 14:56:14,400 INFO L276 IsEmpty]: Start isEmpty. Operand 7716 states and 26482 transitions. [2021-10-07 14:56:14,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:56:14,417 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:14,417 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] [2021-10-07 14:56:14,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-07 14:56:14,418 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:14,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:14,418 INFO L82 PathProgramCache]: Analyzing trace with hash -30196380, now seen corresponding path program 4 times [2021-10-07 14:56:14,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:14,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452772526] [2021-10-07 14:56:14,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:14,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:14,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:14,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:14,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452772526] [2021-10-07 14:56:14,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452772526] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:14,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:14,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-07 14:56:14,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145420873] [2021-10-07 14:56:14,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:56:14,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:14,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:56:14,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:56:14,528 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) [2021-10-07 14:56:15,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:15,447 INFO L93 Difference]: Finished difference Result 12084 states and 41454 transitions. [2021-10-07 14:56:15,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 14:56:15,448 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 [2021-10-07 14:56:15,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:15,485 INFO L225 Difference]: With dead ends: 12084 [2021-10-07 14:56:15,485 INFO L226 Difference]: Without dead ends: 11946 [2021-10-07 14:56:15,485 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 300.8ms TimeCoverageRelationStatistics Valid=309, Invalid=813, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 14:56:15,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11946 states. [2021-10-07 14:56:15,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11946 to 7566. [2021-10-07 14:56:15,758 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) [2021-10-07 14:56:15,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7566 states to 7566 states and 26026 transitions. [2021-10-07 14:56:15,782 INFO L78 Accepts]: Start accepts. Automaton has 7566 states and 26026 transitions. Word has length 21 [2021-10-07 14:56:15,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:15,783 INFO L470 AbstractCegarLoop]: Abstraction has 7566 states and 26026 transitions. [2021-10-07 14:56:15,783 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) [2021-10-07 14:56:15,783 INFO L276 IsEmpty]: Start isEmpty. Operand 7566 states and 26026 transitions. [2021-10-07 14:56:15,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:56:15,796 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:15,796 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] [2021-10-07 14:56:15,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-07 14:56:15,796 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:15,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:15,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1754512406, now seen corresponding path program 3 times [2021-10-07 14:56:15,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:15,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483446383] [2021-10-07 14:56:15,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:15,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:15,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:15,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:15,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483446383] [2021-10-07 14:56:15,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483446383] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:15,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:15,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-07 14:56:15,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575490882] [2021-10-07 14:56:15,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:56:15,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:15,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:56:15,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:56:15,905 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) [2021-10-07 14:56:16,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:16,572 INFO L93 Difference]: Finished difference Result 10144 states and 35392 transitions. [2021-10-07 14:56:16,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 14:56:16,572 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 [2021-10-07 14:56:16,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:16,602 INFO L225 Difference]: With dead ends: 10144 [2021-10-07 14:56:16,602 INFO L226 Difference]: Without dead ends: 9982 [2021-10-07 14:56:16,602 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 206.7ms TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-10-07 14:56:16,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9982 states. [2021-10-07 14:56:16,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9982 to 7176. [2021-10-07 14:56:16,764 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) [2021-10-07 14:56:16,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7176 states to 7176 states and 24607 transitions. [2021-10-07 14:56:16,787 INFO L78 Accepts]: Start accepts. Automaton has 7176 states and 24607 transitions. Word has length 21 [2021-10-07 14:56:16,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:16,787 INFO L470 AbstractCegarLoop]: Abstraction has 7176 states and 24607 transitions. [2021-10-07 14:56:16,787 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) [2021-10-07 14:56:16,787 INFO L276 IsEmpty]: Start isEmpty. Operand 7176 states and 24607 transitions. [2021-10-07 14:56:16,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:56:16,798 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:16,798 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] [2021-10-07 14:56:16,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-07 14:56:16,799 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:16,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:16,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1758493468, now seen corresponding path program 5 times [2021-10-07 14:56:16,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:16,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649701365] [2021-10-07 14:56:16,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:16,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:16,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:16,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:16,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649701365] [2021-10-07 14:56:16,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649701365] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:16,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:16,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-07 14:56:16,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166473850] [2021-10-07 14:56:16,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:56:16,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:16,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:56:16,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:56:16,910 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) [2021-10-07 14:56:17,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:17,627 INFO L93 Difference]: Finished difference Result 9738 states and 33897 transitions. [2021-10-07 14:56:17,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 14:56:17,628 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 [2021-10-07 14:56:17,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:17,667 INFO L225 Difference]: With dead ends: 9738 [2021-10-07 14:56:17,668 INFO L226 Difference]: Without dead ends: 9536 [2021-10-07 14:56:17,668 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 202.3ms TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-10-07 14:56:17,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9536 states. [2021-10-07 14:56:17,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9536 to 6188. [2021-10-07 14:56:17,881 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) [2021-10-07 14:56:17,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6188 states to 6188 states and 21003 transitions. [2021-10-07 14:56:17,913 INFO L78 Accepts]: Start accepts. Automaton has 6188 states and 21003 transitions. Word has length 21 [2021-10-07 14:56:17,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:17,915 INFO L470 AbstractCegarLoop]: Abstraction has 6188 states and 21003 transitions. [2021-10-07 14:56:17,915 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) [2021-10-07 14:56:17,915 INFO L276 IsEmpty]: Start isEmpty. Operand 6188 states and 21003 transitions. [2021-10-07 14:56:17,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:56:17,929 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:17,929 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] [2021-10-07 14:56:17,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-07 14:56:17,930 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:17,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:17,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1622557482, now seen corresponding path program 4 times [2021-10-07 14:56:17,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:17,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649217011] [2021-10-07 14:56:17,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:17,931 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:18,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:18,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:18,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649217011] [2021-10-07 14:56:18,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649217011] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:18,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:18,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-07 14:56:18,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764613695] [2021-10-07 14:56:18,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:56:18,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:18,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:56:18,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:56:18,052 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) [2021-10-07 14:56:18,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:18,737 INFO L93 Difference]: Finished difference Result 8282 states and 28809 transitions. [2021-10-07 14:56:18,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 14:56:18,738 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 [2021-10-07 14:56:18,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:18,769 INFO L225 Difference]: With dead ends: 8282 [2021-10-07 14:56:18,770 INFO L226 Difference]: Without dead ends: 8142 [2021-10-07 14:56:18,770 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 205.4ms TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-10-07 14:56:18,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8142 states. [2021-10-07 14:56:18,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8142 to 6144. [2021-10-07 14:56:18,914 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) [2021-10-07 14:56:18,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6144 states to 6144 states and 20859 transitions. [2021-10-07 14:56:18,935 INFO L78 Accepts]: Start accepts. Automaton has 6144 states and 20859 transitions. Word has length 21 [2021-10-07 14:56:18,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:18,936 INFO L470 AbstractCegarLoop]: Abstraction has 6144 states and 20859 transitions. [2021-10-07 14:56:18,936 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) [2021-10-07 14:56:18,936 INFO L276 IsEmpty]: Start isEmpty. Operand 6144 states and 20859 transitions. [2021-10-07 14:56:18,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:56:18,945 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:18,946 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] [2021-10-07 14:56:18,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-07 14:56:18,946 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:18,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:18,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1616792821, now seen corresponding path program 1 times [2021-10-07 14:56:18,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:18,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140706960] [2021-10-07 14:56:18,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:18,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:19,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:19,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:19,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140706960] [2021-10-07 14:56:19,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140706960] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:19,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:19,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-07 14:56:19,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871156450] [2021-10-07 14:56:19,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:56:19,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:19,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:56:19,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:56:19,057 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) [2021-10-07 14:56:19,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:19,777 INFO L93 Difference]: Finished difference Result 8440 states and 29206 transitions. [2021-10-07 14:56:19,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 14:56:19,777 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 [2021-10-07 14:56:19,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:19,806 INFO L225 Difference]: With dead ends: 8440 [2021-10-07 14:56:19,807 INFO L226 Difference]: Without dead ends: 8262 [2021-10-07 14:56:19,807 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 216.3ms TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-10-07 14:56:19,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8262 states. [2021-10-07 14:56:19,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8262 to 6088. [2021-10-07 14:56:19,982 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) [2021-10-07 14:56:20,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6088 states to 6088 states and 20641 transitions. [2021-10-07 14:56:20,006 INFO L78 Accepts]: Start accepts. Automaton has 6088 states and 20641 transitions. Word has length 21 [2021-10-07 14:56:20,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:20,006 INFO L470 AbstractCegarLoop]: Abstraction has 6088 states and 20641 transitions. [2021-10-07 14:56:20,007 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) [2021-10-07 14:56:20,007 INFO L276 IsEmpty]: Start isEmpty. Operand 6088 states and 20641 transitions. [2021-10-07 14:56:20,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:56:20,017 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:20,018 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] [2021-10-07 14:56:20,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-07 14:56:20,018 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:20,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:20,019 INFO L82 PathProgramCache]: Analyzing trace with hash 2085973406, now seen corresponding path program 6 times [2021-10-07 14:56:20,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:20,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370162869] [2021-10-07 14:56:20,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:20,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:20,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:20,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:20,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370162869] [2021-10-07 14:56:20,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370162869] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:20,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:20,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-07 14:56:20,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030522757] [2021-10-07 14:56:20,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:56:20,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:20,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:56:20,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:56:20,134 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) [2021-10-07 14:56:20,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:20,822 INFO L93 Difference]: Finished difference Result 8318 states and 28867 transitions. [2021-10-07 14:56:20,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 14:56:20,823 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 [2021-10-07 14:56:20,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:20,862 INFO L225 Difference]: With dead ends: 8318 [2021-10-07 14:56:20,862 INFO L226 Difference]: Without dead ends: 8108 [2021-10-07 14:56:20,863 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 224.7ms TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-10-07 14:56:20,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8108 states. [2021-10-07 14:56:21,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8108 to 5506. [2021-10-07 14:56:21,073 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) [2021-10-07 14:56:21,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5506 states to 5506 states and 18881 transitions. [2021-10-07 14:56:21,098 INFO L78 Accepts]: Start accepts. Automaton has 5506 states and 18881 transitions. Word has length 21 [2021-10-07 14:56:21,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:21,099 INFO L470 AbstractCegarLoop]: Abstraction has 5506 states and 18881 transitions. [2021-10-07 14:56:21,099 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) [2021-10-07 14:56:21,099 INFO L276 IsEmpty]: Start isEmpty. Operand 5506 states and 18881 transitions. [2021-10-07 14:56:21,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:56:21,109 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:21,110 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] [2021-10-07 14:56:21,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-07 14:56:21,110 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:21,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:21,111 INFO L82 PathProgramCache]: Analyzing trace with hash 2085915887, now seen corresponding path program 2 times [2021-10-07 14:56:21,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:21,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133144522] [2021-10-07 14:56:21,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:21,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:21,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:21,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:21,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133144522] [2021-10-07 14:56:21,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133144522] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:21,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:21,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-07 14:56:21,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888982514] [2021-10-07 14:56:21,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:56:21,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:21,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:56:21,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:56:21,219 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) [2021-10-07 14:56:21,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:21,997 INFO L93 Difference]: Finished difference Result 7598 states and 26713 transitions. [2021-10-07 14:56:21,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 14:56:21,998 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 [2021-10-07 14:56:21,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:22,025 INFO L225 Difference]: With dead ends: 7598 [2021-10-07 14:56:22,025 INFO L226 Difference]: Without dead ends: 7332 [2021-10-07 14:56:22,025 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 216.6ms TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-10-07 14:56:22,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7332 states. [2021-10-07 14:56:22,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7332 to 5266. [2021-10-07 14:56:22,181 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) [2021-10-07 14:56:22,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5266 states to 5266 states and 18164 transitions. [2021-10-07 14:56:22,202 INFO L78 Accepts]: Start accepts. Automaton has 5266 states and 18164 transitions. Word has length 21 [2021-10-07 14:56:22,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:22,202 INFO L470 AbstractCegarLoop]: Abstraction has 5266 states and 18164 transitions. [2021-10-07 14:56:22,202 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) [2021-10-07 14:56:22,203 INFO L276 IsEmpty]: Start isEmpty. Operand 5266 states and 18164 transitions. [2021-10-07 14:56:22,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 14:56:22,214 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:22,214 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] [2021-10-07 14:56:22,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-07 14:56:22,215 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:22,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:22,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1086757367, now seen corresponding path program 1 times [2021-10-07 14:56:22,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:22,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758276092] [2021-10-07 14:56:22,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:22,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:22,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:22,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:22,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758276092] [2021-10-07 14:56:22,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758276092] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:22,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:22,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-07 14:56:22,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435713301] [2021-10-07 14:56:22,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:56:22,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:22,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:56:22,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:56:22,340 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) [2021-10-07 14:56:23,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:23,166 INFO L93 Difference]: Finished difference Result 10698 states and 36117 transitions. [2021-10-07 14:56:23,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 14:56:23,167 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 [2021-10-07 14:56:23,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:23,202 INFO L225 Difference]: With dead ends: 10698 [2021-10-07 14:56:23,202 INFO L226 Difference]: Without dead ends: 10612 [2021-10-07 14:56:23,203 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 230.5ms TimeCoverageRelationStatistics Valid=217, Invalid=539, Unknown=0, NotChecked=0, Total=756 [2021-10-07 14:56:23,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10612 states. [2021-10-07 14:56:23,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10612 to 5730. [2021-10-07 14:56:23,379 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) [2021-10-07 14:56:23,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5730 states to 5730 states and 19726 transitions. [2021-10-07 14:56:23,405 INFO L78 Accepts]: Start accepts. Automaton has 5730 states and 19726 transitions. Word has length 22 [2021-10-07 14:56:23,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:23,405 INFO L470 AbstractCegarLoop]: Abstraction has 5730 states and 19726 transitions. [2021-10-07 14:56:23,405 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) [2021-10-07 14:56:23,405 INFO L276 IsEmpty]: Start isEmpty. Operand 5730 states and 19726 transitions. [2021-10-07 14:56:23,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 14:56:23,417 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:23,417 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, 1] [2021-10-07 14:56:23,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-07 14:56:23,417 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:23,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:23,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1247321867, now seen corresponding path program 2 times [2021-10-07 14:56:23,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:23,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012575037] [2021-10-07 14:56:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:23,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:23,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:23,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:23,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012575037] [2021-10-07 14:56:23,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012575037] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:23,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:23,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-07 14:56:23,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090164925] [2021-10-07 14:56:23,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:56:23,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:23,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:56:23,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:56:23,536 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) [2021-10-07 14:56:24,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:24,561 INFO L93 Difference]: Finished difference Result 10286 states and 35836 transitions. [2021-10-07 14:56:24,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 14:56:24,561 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 [2021-10-07 14:56:24,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:24,593 INFO L225 Difference]: With dead ends: 10286 [2021-10-07 14:56:24,593 INFO L226 Difference]: Without dead ends: 10136 [2021-10-07 14:56:24,593 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 260.1ms TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2021-10-07 14:56:24,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10136 states. [2021-10-07 14:56:24,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10136 to 5716. [2021-10-07 14:56:24,743 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) [2021-10-07 14:56:24,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5716 states to 5716 states and 19675 transitions. [2021-10-07 14:56:24,760 INFO L78 Accepts]: Start accepts. Automaton has 5716 states and 19675 transitions. Word has length 22 [2021-10-07 14:56:24,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:24,761 INFO L470 AbstractCegarLoop]: Abstraction has 5716 states and 19675 transitions. [2021-10-07 14:56:24,761 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) [2021-10-07 14:56:24,761 INFO L276 IsEmpty]: Start isEmpty. Operand 5716 states and 19675 transitions. [2021-10-07 14:56:24,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 14:56:24,773 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:24,773 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] [2021-10-07 14:56:24,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-07 14:56:24,773 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:24,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:24,774 INFO L82 PathProgramCache]: Analyzing trace with hash 997428809, now seen corresponding path program 3 times [2021-10-07 14:56:24,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:24,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113241923] [2021-10-07 14:56:24,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:24,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:24,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:24,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:24,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113241923] [2021-10-07 14:56:24,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113241923] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:24,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:24,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-07 14:56:24,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321866404] [2021-10-07 14:56:24,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:56:24,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:24,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:56:24,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:56:24,888 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) [2021-10-07 14:56:25,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:25,686 INFO L93 Difference]: Finished difference Result 9068 states and 31555 transitions. [2021-10-07 14:56:25,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 14:56:25,686 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 [2021-10-07 14:56:25,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:25,733 INFO L225 Difference]: With dead ends: 9068 [2021-10-07 14:56:25,733 INFO L226 Difference]: Without dead ends: 8742 [2021-10-07 14:56:25,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 189.0ms TimeCoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2021-10-07 14:56:25,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8742 states. [2021-10-07 14:56:25,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8742 to 6090. [2021-10-07 14:56:25,987 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) [2021-10-07 14:56:26,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6090 states to 6090 states and 20904 transitions. [2021-10-07 14:56:26,027 INFO L78 Accepts]: Start accepts. Automaton has 6090 states and 20904 transitions. Word has length 22 [2021-10-07 14:56:26,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:26,027 INFO L470 AbstractCegarLoop]: Abstraction has 6090 states and 20904 transitions. [2021-10-07 14:56:26,028 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) [2021-10-07 14:56:26,028 INFO L276 IsEmpty]: Start isEmpty. Operand 6090 states and 20904 transitions. [2021-10-07 14:56:26,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 14:56:26,041 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:26,041 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] [2021-10-07 14:56:26,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-07 14:56:26,042 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:26,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:26,042 INFO L82 PathProgramCache]: Analyzing trace with hash 532553927, now seen corresponding path program 4 times [2021-10-07 14:56:26,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:26,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954177756] [2021-10-07 14:56:26,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:26,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:26,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:26,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:26,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954177756] [2021-10-07 14:56:26,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954177756] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:26,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:26,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-07 14:56:26,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303717163] [2021-10-07 14:56:26,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:56:26,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:26,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:56:26,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:56:26,183 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) [2021-10-07 14:56:26,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:26,890 INFO L93 Difference]: Finished difference Result 9966 states and 34751 transitions. [2021-10-07 14:56:26,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 14:56:26,891 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 [2021-10-07 14:56:26,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:26,934 INFO L225 Difference]: With dead ends: 9966 [2021-10-07 14:56:26,934 INFO L226 Difference]: Without dead ends: 9782 [2021-10-07 14:56:26,935 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 218.8ms TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2021-10-07 14:56:26,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9782 states. [2021-10-07 14:56:27,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9782 to 7098. [2021-10-07 14:56:27,141 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) [2021-10-07 14:56:27,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7098 states to 7098 states and 24958 transitions. [2021-10-07 14:56:27,170 INFO L78 Accepts]: Start accepts. Automaton has 7098 states and 24958 transitions. Word has length 22 [2021-10-07 14:56:27,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:27,171 INFO L470 AbstractCegarLoop]: Abstraction has 7098 states and 24958 transitions. [2021-10-07 14:56:27,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:27,171 INFO L276 IsEmpty]: Start isEmpty. Operand 7098 states and 24958 transitions. [2021-10-07 14:56:27,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 14:56:27,185 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:27,185 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] [2021-10-07 14:56:27,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-07 14:56:27,186 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:27,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:27,187 INFO L82 PathProgramCache]: Analyzing trace with hash -574360759, now seen corresponding path program 5 times [2021-10-07 14:56:27,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:27,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928245046] [2021-10-07 14:56:27,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:27,187 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:27,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:27,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:27,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928245046] [2021-10-07 14:56:27,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928245046] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:27,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:27,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-07 14:56:27,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723168303] [2021-10-07 14:56:27,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:56:27,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:27,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:56:27,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:56:27,306 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) [2021-10-07 14:56:28,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:28,178 INFO L93 Difference]: Finished difference Result 12300 states and 41260 transitions. [2021-10-07 14:56:28,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 14:56:28,179 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 [2021-10-07 14:56:28,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:28,228 INFO L225 Difference]: With dead ends: 12300 [2021-10-07 14:56:28,228 INFO L226 Difference]: Without dead ends: 12196 [2021-10-07 14:56:28,229 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 224.7ms TimeCoverageRelationStatistics Valid=219, Invalid=537, Unknown=0, NotChecked=0, Total=756 [2021-10-07 14:56:28,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12196 states. [2021-10-07 14:56:28,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12196 to 7390. [2021-10-07 14:56:28,466 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) [2021-10-07 14:56:28,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7390 states to 7390 states and 25959 transitions. [2021-10-07 14:56:28,496 INFO L78 Accepts]: Start accepts. Automaton has 7390 states and 25959 transitions. Word has length 22 [2021-10-07 14:56:28,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:28,496 INFO L470 AbstractCegarLoop]: Abstraction has 7390 states and 25959 transitions. [2021-10-07 14:56:28,496 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) [2021-10-07 14:56:28,496 INFO L276 IsEmpty]: Start isEmpty. Operand 7390 states and 25959 transitions. [2021-10-07 14:56:28,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 14:56:28,512 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:28,512 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] [2021-10-07 14:56:28,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-10-07 14:56:28,512 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:28,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:28,513 INFO L82 PathProgramCache]: Analyzing trace with hash -708420259, now seen corresponding path program 6 times [2021-10-07 14:56:28,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:28,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544144152] [2021-10-07 14:56:28,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:28,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:28,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:28,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:28,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544144152] [2021-10-07 14:56:28,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544144152] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:28,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:28,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-07 14:56:28,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600649515] [2021-10-07 14:56:28,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:56:28,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:28,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:56:28,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:56:28,634 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) [2021-10-07 14:56:29,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:29,671 INFO L93 Difference]: Finished difference Result 11734 states and 40514 transitions. [2021-10-07 14:56:29,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 14:56:29,672 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 [2021-10-07 14:56:29,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:29,718 INFO L225 Difference]: With dead ends: 11734 [2021-10-07 14:56:29,719 INFO L226 Difference]: Without dead ends: 11614 [2021-10-07 14:56:29,720 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 326.9ms TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 14:56:29,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11614 states. [2021-10-07 14:56:29,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11614 to 7504. [2021-10-07 14:56:29,941 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) [2021-10-07 14:56:29,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7504 states to 7504 states and 26363 transitions. [2021-10-07 14:56:29,972 INFO L78 Accepts]: Start accepts. Automaton has 7504 states and 26363 transitions. Word has length 22 [2021-10-07 14:56:29,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:29,973 INFO L470 AbstractCegarLoop]: Abstraction has 7504 states and 26363 transitions. [2021-10-07 14:56:29,973 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) [2021-10-07 14:56:29,973 INFO L276 IsEmpty]: Start isEmpty. Operand 7504 states and 26363 transitions. [2021-10-07 14:56:29,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 14:56:29,991 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:29,991 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] [2021-10-07 14:56:29,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-10-07 14:56:29,992 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:29,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:29,992 INFO L82 PathProgramCache]: Analyzing trace with hash -929470653, now seen corresponding path program 7 times [2021-10-07 14:56:29,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:29,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034640933] [2021-10-07 14:56:29,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:29,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:30,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:30,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:30,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034640933] [2021-10-07 14:56:30,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034640933] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:30,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:30,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-07 14:56:30,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446407020] [2021-10-07 14:56:30,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:56:30,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:30,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:56:30,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:56:30,111 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) [2021-10-07 14:56:30,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:30,885 INFO L93 Difference]: Finished difference Result 10216 states and 35316 transitions. [2021-10-07 14:56:30,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 14:56:30,887 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 [2021-10-07 14:56:30,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:30,925 INFO L225 Difference]: With dead ends: 10216 [2021-10-07 14:56:30,926 INFO L226 Difference]: Without dead ends: 10122 [2021-10-07 14:56:30,926 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 219.1ms TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2021-10-07 14:56:30,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10122 states. [2021-10-07 14:56:31,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10122 to 7892. [2021-10-07 14:56:31,139 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) [2021-10-07 14:56:31,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7892 states to 7892 states and 27594 transitions. [2021-10-07 14:56:31,169 INFO L78 Accepts]: Start accepts. Automaton has 7892 states and 27594 transitions. Word has length 22 [2021-10-07 14:56:31,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:31,169 INFO L470 AbstractCegarLoop]: Abstraction has 7892 states and 27594 transitions. [2021-10-07 14:56:31,170 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) [2021-10-07 14:56:31,170 INFO L276 IsEmpty]: Start isEmpty. Operand 7892 states and 27594 transitions. [2021-10-07 14:56:31,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 14:56:31,187 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:31,187 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] [2021-10-07 14:56:31,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-10-07 14:56:31,187 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:31,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:31,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1021337772, now seen corresponding path program 1 times [2021-10-07 14:56:31,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:31,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996158850] [2021-10-07 14:56:31,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:31,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:31,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:31,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:31,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996158850] [2021-10-07 14:56:31,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996158850] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:31,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:31,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-07 14:56:31,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975079832] [2021-10-07 14:56:31,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:56:31,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:31,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:56:31,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:56:31,321 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) [2021-10-07 14:56:32,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:32,177 INFO L93 Difference]: Finished difference Result 10128 states and 35042 transitions. [2021-10-07 14:56:32,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 14:56:32,178 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 [2021-10-07 14:56:32,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:32,230 INFO L225 Difference]: With dead ends: 10128 [2021-10-07 14:56:32,231 INFO L226 Difference]: Without dead ends: 9900 [2021-10-07 14:56:32,232 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 230.1ms TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2021-10-07 14:56:32,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9900 states. [2021-10-07 14:56:32,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9900 to 8006. [2021-10-07 14:56:32,447 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) [2021-10-07 14:56:32,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8006 states to 8006 states and 27916 transitions. [2021-10-07 14:56:32,473 INFO L78 Accepts]: Start accepts. Automaton has 8006 states and 27916 transitions. Word has length 22 [2021-10-07 14:56:32,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:32,474 INFO L470 AbstractCegarLoop]: Abstraction has 8006 states and 27916 transitions. [2021-10-07 14:56:32,474 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) [2021-10-07 14:56:32,474 INFO L276 IsEmpty]: Start isEmpty. Operand 8006 states and 27916 transitions. [2021-10-07 14:56:32,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 14:56:32,490 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:32,490 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] [2021-10-07 14:56:32,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-10-07 14:56:32,490 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:32,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:32,491 INFO L82 PathProgramCache]: Analyzing trace with hash -704942097, now seen corresponding path program 8 times [2021-10-07 14:56:32,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:32,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099370682] [2021-10-07 14:56:32,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:32,491 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:32,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:32,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:32,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099370682] [2021-10-07 14:56:32,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099370682] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:32,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:32,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-07 14:56:32,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958312815] [2021-10-07 14:56:32,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:56:32,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:32,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:56:32,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:56:32,628 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) [2021-10-07 14:56:33,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:33,279 INFO L93 Difference]: Finished difference Result 10708 states and 36868 transitions. [2021-10-07 14:56:33,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 14:56:33,280 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 [2021-10-07 14:56:33,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:33,321 INFO L225 Difference]: With dead ends: 10708 [2021-10-07 14:56:33,321 INFO L226 Difference]: Without dead ends: 10614 [2021-10-07 14:56:33,322 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 213.3ms TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2021-10-07 14:56:33,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10614 states. [2021-10-07 14:56:33,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10614 to 8504. [2021-10-07 14:56:33,617 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) [2021-10-07 14:56:33,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8504 states to 8504 states and 29734 transitions. [2021-10-07 14:56:33,672 INFO L78 Accepts]: Start accepts. Automaton has 8504 states and 29734 transitions. Word has length 22 [2021-10-07 14:56:33,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:33,672 INFO L470 AbstractCegarLoop]: Abstraction has 8504 states and 29734 transitions. [2021-10-07 14:56:33,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:33,672 INFO L276 IsEmpty]: Start isEmpty. Operand 8504 states and 29734 transitions. [2021-10-07 14:56:33,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 14:56:33,693 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:33,693 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] [2021-10-07 14:56:33,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-10-07 14:56:33,694 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:33,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:33,694 INFO L82 PathProgramCache]: Analyzing trace with hash -704999616, now seen corresponding path program 2 times [2021-10-07 14:56:33,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:33,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482545054] [2021-10-07 14:56:33,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:33,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:33,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:33,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:33,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482545054] [2021-10-07 14:56:33,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482545054] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:33,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:33,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-07 14:56:33,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411214863] [2021-10-07 14:56:33,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:56:33,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:33,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:56:33,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:56:33,843 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) [2021-10-07 14:56:34,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:34,530 INFO L93 Difference]: Finished difference Result 10548 states and 36426 transitions. [2021-10-07 14:56:34,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 14:56:34,531 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 [2021-10-07 14:56:34,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:34,586 INFO L225 Difference]: With dead ends: 10548 [2021-10-07 14:56:34,587 INFO L226 Difference]: Without dead ends: 10324 [2021-10-07 14:56:34,587 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 201.1ms TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2021-10-07 14:56:34,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10324 states. [2021-10-07 14:56:34,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10324 to 8332. [2021-10-07 14:56:34,825 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) [2021-10-07 14:56:34,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8332 states to 8332 states and 29203 transitions. [2021-10-07 14:56:34,858 INFO L78 Accepts]: Start accepts. Automaton has 8332 states and 29203 transitions. Word has length 22 [2021-10-07 14:56:34,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:34,859 INFO L470 AbstractCegarLoop]: Abstraction has 8332 states and 29203 transitions. [2021-10-07 14:56:34,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:34,859 INFO L276 IsEmpty]: Start isEmpty. Operand 8332 states and 29203 transitions. [2021-10-07 14:56:34,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 14:56:34,877 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:34,878 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] [2021-10-07 14:56:34,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-10-07 14:56:34,878 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:34,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:34,879 INFO L82 PathProgramCache]: Analyzing trace with hash 213656003, now seen corresponding path program 9 times [2021-10-07 14:56:34,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:34,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698278892] [2021-10-07 14:56:34,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:34,879 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:34,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:34,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:34,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698278892] [2021-10-07 14:56:34,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698278892] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:34,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:34,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-07 14:56:35,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537707982] [2021-10-07 14:56:35,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:56:35,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:35,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:56:35,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:56:35,001 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) [2021-10-07 14:56:35,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:35,582 INFO L93 Difference]: Finished difference Result 9634 states and 33520 transitions. [2021-10-07 14:56:35,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 14:56:35,583 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 [2021-10-07 14:56:35,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:35,616 INFO L225 Difference]: With dead ends: 9634 [2021-10-07 14:56:35,616 INFO L226 Difference]: Without dead ends: 9328 [2021-10-07 14:56:35,616 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 152.6ms TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2021-10-07 14:56:35,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9328 states. [2021-10-07 14:56:35,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9328 to 6846. [2021-10-07 14:56:35,811 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) [2021-10-07 14:56:35,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6846 states to 6846 states and 23760 transitions. [2021-10-07 14:56:35,839 INFO L78 Accepts]: Start accepts. Automaton has 6846 states and 23760 transitions. Word has length 22 [2021-10-07 14:56:35,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:35,840 INFO L470 AbstractCegarLoop]: Abstraction has 6846 states and 23760 transitions. [2021-10-07 14:56:35,840 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) [2021-10-07 14:56:35,840 INFO L276 IsEmpty]: Start isEmpty. Operand 6846 states and 23760 transitions. [2021-10-07 14:56:35,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 14:56:35,855 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:35,855 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] [2021-10-07 14:56:35,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-10-07 14:56:35,855 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:35,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:35,856 INFO L82 PathProgramCache]: Analyzing trace with hash 426874947, now seen corresponding path program 10 times [2021-10-07 14:56:35,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:35,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844815865] [2021-10-07 14:56:35,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:35,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:35,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:35,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:35,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844815865] [2021-10-07 14:56:35,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844815865] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:35,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:35,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-07 14:56:35,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747890719] [2021-10-07 14:56:35,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:56:35,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:35,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:56:35,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:56:35,990 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) [2021-10-07 14:56:36,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:36,628 INFO L93 Difference]: Finished difference Result 8192 states and 28806 transitions. [2021-10-07 14:56:36,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 14:56:36,628 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 [2021-10-07 14:56:36,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:36,655 INFO L225 Difference]: With dead ends: 8192 [2021-10-07 14:56:36,655 INFO L226 Difference]: Without dead ends: 8070 [2021-10-07 14:56:36,655 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 [2021-10-07 14:56:36,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8070 states. [2021-10-07 14:56:36,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8070 to 6308. [2021-10-07 14:56:36,821 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) [2021-10-07 14:56:36,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6308 states to 6308 states and 22067 transitions. [2021-10-07 14:56:36,849 INFO L78 Accepts]: Start accepts. Automaton has 6308 states and 22067 transitions. Word has length 22 [2021-10-07 14:56:36,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:36,849 INFO L470 AbstractCegarLoop]: Abstraction has 6308 states and 22067 transitions. [2021-10-07 14:56:36,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:36,850 INFO L276 IsEmpty]: Start isEmpty. Operand 6308 states and 22067 transitions. [2021-10-07 14:56:36,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 14:56:36,862 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:36,862 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] [2021-10-07 14:56:36,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-10-07 14:56:36,863 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:36,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:36,863 INFO L82 PathProgramCache]: Analyzing trace with hash 426817428, now seen corresponding path program 3 times [2021-10-07 14:56:36,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:36,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644637353] [2021-10-07 14:56:36,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:36,864 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:37,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:37,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:37,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644637353] [2021-10-07 14:56:37,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644637353] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:37,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:37,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-07 14:56:37,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611762818] [2021-10-07 14:56:37,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:56:37,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:37,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:56:37,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:56:37,020 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) [2021-10-07 14:56:37,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:37,590 INFO L93 Difference]: Finished difference Result 7708 states and 27294 transitions. [2021-10-07 14:56:37,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 14:56:37,591 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 [2021-10-07 14:56:37,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:37,616 INFO L225 Difference]: With dead ends: 7708 [2021-10-07 14:56:37,616 INFO L226 Difference]: Without dead ends: 7318 [2021-10-07 14:56:37,617 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 157.8ms TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-10-07 14:56:37,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7318 states. [2021-10-07 14:56:37,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7318 to 4924. [2021-10-07 14:56:37,761 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) [2021-10-07 14:56:37,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4924 states to 4924 states and 16847 transitions. [2021-10-07 14:56:37,781 INFO L78 Accepts]: Start accepts. Automaton has 4924 states and 16847 transitions. Word has length 22 [2021-10-07 14:56:37,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:37,781 INFO L470 AbstractCegarLoop]: Abstraction has 4924 states and 16847 transitions. [2021-10-07 14:56:37,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:56:37,782 INFO L276 IsEmpty]: Start isEmpty. Operand 4924 states and 16847 transitions. [2021-10-07 14:56:37,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 14:56:37,792 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:37,792 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] [2021-10-07 14:56:37,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-10-07 14:56:37,793 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:37,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:37,793 INFO L82 PathProgramCache]: Analyzing trace with hash 2116444040, now seen corresponding path program 4 times [2021-10-07 14:56:37,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:37,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111389593] [2021-10-07 14:56:37,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:37,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:37,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:37,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:37,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111389593] [2021-10-07 14:56:37,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111389593] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:37,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:37,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-07 14:56:37,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365731889] [2021-10-07 14:56:37,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:56:37,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:37,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:56:37,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:56:37,910 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) [2021-10-07 14:56:38,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:38,451 INFO L93 Difference]: Finished difference Result 6590 states and 23461 transitions. [2021-10-07 14:56:38,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 14:56:38,452 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 [2021-10-07 14:56:38,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:38,484 INFO L225 Difference]: With dead ends: 6590 [2021-10-07 14:56:38,484 INFO L226 Difference]: Without dead ends: 6154 [2021-10-07 14:56:38,485 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 146.7ms TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-10-07 14:56:38,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6154 states. [2021-10-07 14:56:38,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6154 to 4624. [2021-10-07 14:56:38,611 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) [2021-10-07 14:56:38,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4624 states to 4624 states and 15819 transitions. [2021-10-07 14:56:38,630 INFO L78 Accepts]: Start accepts. Automaton has 4624 states and 15819 transitions. Word has length 22 [2021-10-07 14:56:38,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:38,631 INFO L470 AbstractCegarLoop]: Abstraction has 4624 states and 15819 transitions. [2021-10-07 14:56:38,631 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) [2021-10-07 14:56:38,631 INFO L276 IsEmpty]: Start isEmpty. Operand 4624 states and 15819 transitions. [2021-10-07 14:56:38,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 14:56:38,640 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:38,641 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] [2021-10-07 14:56:38,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-10-07 14:56:38,641 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:38,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:38,641 INFO L82 PathProgramCache]: Analyzing trace with hash 2041295787, now seen corresponding path program 1 times [2021-10-07 14:56:38,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:38,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906464759] [2021-10-07 14:56:38,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:38,642 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:38,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:38,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:38,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906464759] [2021-10-07 14:56:38,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906464759] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:38,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:38,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-07 14:56:38,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110094791] [2021-10-07 14:56:38,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:56:38,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:38,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:56:38,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:56:38,751 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) [2021-10-07 14:56:39,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:39,305 INFO L93 Difference]: Finished difference Result 6252 states and 22260 transitions. [2021-10-07 14:56:39,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 14:56:39,306 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 [2021-10-07 14:56:39,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:39,326 INFO L225 Difference]: With dead ends: 6252 [2021-10-07 14:56:39,326 INFO L226 Difference]: Without dead ends: 5748 [2021-10-07 14:56:39,326 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 167.2ms TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-10-07 14:56:39,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5748 states. [2021-10-07 14:56:39,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5748 to 4352. [2021-10-07 14:56:39,439 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) [2021-10-07 14:56:39,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4352 states to 4352 states and 14823 transitions. [2021-10-07 14:56:39,455 INFO L78 Accepts]: Start accepts. Automaton has 4352 states and 14823 transitions. Word has length 23 [2021-10-07 14:56:39,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:39,455 INFO L470 AbstractCegarLoop]: Abstraction has 4352 states and 14823 transitions. [2021-10-07 14:56:39,455 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) [2021-10-07 14:56:39,455 INFO L276 IsEmpty]: Start isEmpty. Operand 4352 states and 14823 transitions. [2021-10-07 14:56:39,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 14:56:39,464 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:39,464 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] [2021-10-07 14:56:39,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-10-07 14:56:39,464 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:39,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:39,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1006128875, now seen corresponding path program 2 times [2021-10-07 14:56:39,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:39,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041088523] [2021-10-07 14:56:39,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:39,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:39,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:39,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:39,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041088523] [2021-10-07 14:56:39,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041088523] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:39,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:39,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-07 14:56:39,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365039435] [2021-10-07 14:56:39,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:56:39,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:39,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:56:39,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:56:39,626 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) [2021-10-07 14:56:40,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:40,152 INFO L93 Difference]: Finished difference Result 5776 states and 20551 transitions. [2021-10-07 14:56:40,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 14:56:40,153 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 [2021-10-07 14:56:40,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:40,168 INFO L225 Difference]: With dead ends: 5776 [2021-10-07 14:56:40,168 INFO L226 Difference]: Without dead ends: 5022 [2021-10-07 14:56:40,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 162.8ms TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-10-07 14:56:40,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5022 states. [2021-10-07 14:56:40,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5022 to 3692. [2021-10-07 14:56:40,247 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) [2021-10-07 14:56:40,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3692 states to 3692 states and 12788 transitions. [2021-10-07 14:56:40,259 INFO L78 Accepts]: Start accepts. Automaton has 3692 states and 12788 transitions. Word has length 23 [2021-10-07 14:56:40,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:40,259 INFO L470 AbstractCegarLoop]: Abstraction has 3692 states and 12788 transitions. [2021-10-07 14:56:40,259 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) [2021-10-07 14:56:40,259 INFO L276 IsEmpty]: Start isEmpty. Operand 3692 states and 12788 transitions. [2021-10-07 14:56:40,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:56:40,267 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:40,267 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] [2021-10-07 14:56:40,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-10-07 14:56:40,268 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:40,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:40,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1999905633, now seen corresponding path program 1 times [2021-10-07 14:56:40,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:40,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106598795] [2021-10-07 14:56:40,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:40,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:40,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:40,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:40,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106598795] [2021-10-07 14:56:40,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106598795] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:40,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:40,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-07 14:56:40,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117303551] [2021-10-07 14:56:40,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:56:40,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:40,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:56:40,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:56:40,386 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) [2021-10-07 14:56:41,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:41,271 INFO L93 Difference]: Finished difference Result 6814 states and 23928 transitions. [2021-10-07 14:56:41,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 14:56:41,272 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 [2021-10-07 14:56:41,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:41,292 INFO L225 Difference]: With dead ends: 6814 [2021-10-07 14:56:41,292 INFO L226 Difference]: Without dead ends: 6798 [2021-10-07 14:56:41,293 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 305.2ms TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2021-10-07 14:56:41,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6798 states. [2021-10-07 14:56:41,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6798 to 3828. [2021-10-07 14:56:41,385 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) [2021-10-07 14:56:41,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3828 states to 3828 states and 13230 transitions. [2021-10-07 14:56:41,397 INFO L78 Accepts]: Start accepts. Automaton has 3828 states and 13230 transitions. Word has length 28 [2021-10-07 14:56:41,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:41,398 INFO L470 AbstractCegarLoop]: Abstraction has 3828 states and 13230 transitions. [2021-10-07 14:56:41,398 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) [2021-10-07 14:56:41,398 INFO L276 IsEmpty]: Start isEmpty. Operand 3828 states and 13230 transitions. [2021-10-07 14:56:41,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:56:41,406 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:41,406 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] [2021-10-07 14:56:41,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-10-07 14:56:41,406 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:41,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:41,407 INFO L82 PathProgramCache]: Analyzing trace with hash -2003886695, now seen corresponding path program 1 times [2021-10-07 14:56:41,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:41,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675160056] [2021-10-07 14:56:41,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:41,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:41,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:41,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:41,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675160056] [2021-10-07 14:56:41,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675160056] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:41,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:41,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-07 14:56:41,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995271992] [2021-10-07 14:56:41,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:56:41,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:41,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:56:41,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:56:41,520 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) [2021-10-07 14:56:42,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:42,372 INFO L93 Difference]: Finished difference Result 6854 states and 24031 transitions. [2021-10-07 14:56:42,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 14:56:42,374 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 [2021-10-07 14:56:42,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:42,395 INFO L225 Difference]: With dead ends: 6854 [2021-10-07 14:56:42,395 INFO L226 Difference]: Without dead ends: 6806 [2021-10-07 14:56:42,396 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 289.2ms TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2021-10-07 14:56:42,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6806 states. [2021-10-07 14:56:42,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6806 to 3804. [2021-10-07 14:56:42,496 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) [2021-10-07 14:56:42,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3804 states to 3804 states and 13164 transitions. [2021-10-07 14:56:42,508 INFO L78 Accepts]: Start accepts. Automaton has 3804 states and 13164 transitions. Word has length 28 [2021-10-07 14:56:42,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:42,508 INFO L470 AbstractCegarLoop]: Abstraction has 3804 states and 13164 transitions. [2021-10-07 14:56:42,508 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) [2021-10-07 14:56:42,508 INFO L276 IsEmpty]: Start isEmpty. Operand 3804 states and 13164 transitions. [2021-10-07 14:56:42,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:56:42,517 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:42,517 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] [2021-10-07 14:56:42,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-10-07 14:56:42,517 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:42,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:42,518 INFO L82 PathProgramCache]: Analyzing trace with hash -995620289, now seen corresponding path program 2 times [2021-10-07 14:56:42,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:42,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963295555] [2021-10-07 14:56:42,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:42,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:42,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:42,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:42,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963295555] [2021-10-07 14:56:42,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963295555] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:42,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:42,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-07 14:56:42,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356651757] [2021-10-07 14:56:42,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:56:42,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:42,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:56:42,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:56:42,663 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) [2021-10-07 14:56:43,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:43,532 INFO L93 Difference]: Finished difference Result 8590 states and 29550 transitions. [2021-10-07 14:56:43,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 14:56:43,533 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 [2021-10-07 14:56:43,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:43,557 INFO L225 Difference]: With dead ends: 8590 [2021-10-07 14:56:43,557 INFO L226 Difference]: Without dead ends: 8566 [2021-10-07 14:56:43,558 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 318.1ms TimeCoverageRelationStatistics Valid=259, Invalid=671, Unknown=0, NotChecked=0, Total=930 [2021-10-07 14:56:43,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8566 states. [2021-10-07 14:56:43,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8566 to 3806. [2021-10-07 14:56:43,675 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) [2021-10-07 14:56:43,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3806 states to 3806 states and 13167 transitions. [2021-10-07 14:56:43,688 INFO L78 Accepts]: Start accepts. Automaton has 3806 states and 13167 transitions. Word has length 28 [2021-10-07 14:56:43,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:43,689 INFO L470 AbstractCegarLoop]: Abstraction has 3806 states and 13167 transitions. [2021-10-07 14:56:43,689 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) [2021-10-07 14:56:43,689 INFO L276 IsEmpty]: Start isEmpty. Operand 3806 states and 13167 transitions. [2021-10-07 14:56:43,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:56:43,696 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:43,696 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] [2021-10-07 14:56:43,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-10-07 14:56:43,697 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:43,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:43,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1117167569, now seen corresponding path program 3 times [2021-10-07 14:56:43,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:43,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801342111] [2021-10-07 14:56:43,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:43,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:43,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:43,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:43,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801342111] [2021-10-07 14:56:43,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801342111] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:43,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:43,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-07 14:56:43,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696135038] [2021-10-07 14:56:43,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:56:43,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:43,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:56:43,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:56:43,822 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) [2021-10-07 14:56:44,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:44,810 INFO L93 Difference]: Finished difference Result 7392 states and 26026 transitions. [2021-10-07 14:56:44,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 14:56:44,810 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 [2021-10-07 14:56:44,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:44,834 INFO L225 Difference]: With dead ends: 7392 [2021-10-07 14:56:44,835 INFO L226 Difference]: Without dead ends: 7358 [2021-10-07 14:56:44,835 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 346.6ms TimeCoverageRelationStatistics Valid=280, Invalid=842, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 14:56:44,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7358 states. [2021-10-07 14:56:44,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7358 to 3796. [2021-10-07 14:56:44,949 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) [2021-10-07 14:56:44,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3796 states to 3796 states and 13144 transitions. [2021-10-07 14:56:44,962 INFO L78 Accepts]: Start accepts. Automaton has 3796 states and 13144 transitions. Word has length 28 [2021-10-07 14:56:44,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:44,962 INFO L470 AbstractCegarLoop]: Abstraction has 3796 states and 13144 transitions. [2021-10-07 14:56:44,962 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) [2021-10-07 14:56:44,962 INFO L276 IsEmpty]: Start isEmpty. Operand 3796 states and 13144 transitions. [2021-10-07 14:56:44,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:56:44,970 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:44,970 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] [2021-10-07 14:56:44,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-10-07 14:56:44,971 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:44,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:44,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1062654317, now seen corresponding path program 2 times [2021-10-07 14:56:44,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:44,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244375251] [2021-10-07 14:56:44,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:44,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:45,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:45,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:45,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244375251] [2021-10-07 14:56:45,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244375251] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:45,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:45,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-07 14:56:45,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970980343] [2021-10-07 14:56:45,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 14:56:45,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:45,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 14:56:45,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:56:45,104 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) [2021-10-07 14:56:46,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:46,157 INFO L93 Difference]: Finished difference Result 7330 states and 25722 transitions. [2021-10-07 14:56:46,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 14:56:46,157 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 [2021-10-07 14:56:46,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:46,188 INFO L225 Difference]: With dead ends: 7330 [2021-10-07 14:56:46,189 INFO L226 Difference]: Without dead ends: 7314 [2021-10-07 14:56:46,189 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 364.6ms TimeCoverageRelationStatistics Valid=317, Invalid=873, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 14:56:46,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7314 states. [2021-10-07 14:56:46,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7314 to 3844. [2021-10-07 14:56:46,323 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) [2021-10-07 14:56:46,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3844 states to 3844 states and 13266 transitions. [2021-10-07 14:56:46,335 INFO L78 Accepts]: Start accepts. Automaton has 3844 states and 13266 transitions. Word has length 28 [2021-10-07 14:56:46,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:46,335 INFO L470 AbstractCegarLoop]: Abstraction has 3844 states and 13266 transitions. [2021-10-07 14:56:46,335 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) [2021-10-07 14:56:46,335 INFO L276 IsEmpty]: Start isEmpty. Operand 3844 states and 13266 transitions. [2021-10-07 14:56:46,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:56:46,342 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:46,343 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] [2021-10-07 14:56:46,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-10-07 14:56:46,343 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:46,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:46,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1066635379, now seen corresponding path program 4 times [2021-10-07 14:56:46,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:46,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971340591] [2021-10-07 14:56:46,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:46,344 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:46,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:46,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:46,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971340591] [2021-10-07 14:56:46,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971340591] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:46,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:46,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-07 14:56:46,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159193385] [2021-10-07 14:56:46,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 14:56:46,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:46,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 14:56:46,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:56:46,475 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) [2021-10-07 14:56:47,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:47,501 INFO L93 Difference]: Finished difference Result 7364 states and 25812 transitions. [2021-10-07 14:56:47,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 14:56:47,502 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 [2021-10-07 14:56:47,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:47,525 INFO L225 Difference]: With dead ends: 7364 [2021-10-07 14:56:47,525 INFO L226 Difference]: Without dead ends: 7284 [2021-10-07 14:56:47,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 378.5ms TimeCoverageRelationStatistics Valid=330, Invalid=930, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 14:56:47,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7284 states. [2021-10-07 14:56:47,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7284 to 3788. [2021-10-07 14:56:47,630 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) [2021-10-07 14:56:47,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3788 states to 3788 states and 13112 transitions. [2021-10-07 14:56:47,643 INFO L78 Accepts]: Start accepts. Automaton has 3788 states and 13112 transitions. Word has length 28 [2021-10-07 14:56:47,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:47,643 INFO L470 AbstractCegarLoop]: Abstraction has 3788 states and 13112 transitions. [2021-10-07 14:56:47,643 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) [2021-10-07 14:56:47,643 INFO L276 IsEmpty]: Start isEmpty. Operand 3788 states and 13112 transitions. [2021-10-07 14:56:47,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:56:47,650 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:47,650 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] [2021-10-07 14:56:47,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-10-07 14:56:47,651 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:47,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:47,651 INFO L82 PathProgramCache]: Analyzing trace with hash 702885971, now seen corresponding path program 3 times [2021-10-07 14:56:47,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:47,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16830557] [2021-10-07 14:56:47,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:47,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:47,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:47,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:47,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16830557] [2021-10-07 14:56:47,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16830557] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:47,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:47,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-07 14:56:47,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431645245] [2021-10-07 14:56:47,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 14:56:47,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:47,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 14:56:47,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:56:47,799 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) [2021-10-07 14:56:48,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:48,704 INFO L93 Difference]: Finished difference Result 5816 states and 20665 transitions. [2021-10-07 14:56:48,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 14:56:48,705 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 [2021-10-07 14:56:48,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:48,722 INFO L225 Difference]: With dead ends: 5816 [2021-10-07 14:56:48,723 INFO L226 Difference]: Without dead ends: 5800 [2021-10-07 14:56:48,723 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 304.6ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 14:56:48,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5800 states. [2021-10-07 14:56:48,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5800 to 4004. [2021-10-07 14:56:48,814 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) [2021-10-07 14:56:48,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4004 states to 4004 states and 13818 transitions. [2021-10-07 14:56:48,827 INFO L78 Accepts]: Start accepts. Automaton has 4004 states and 13818 transitions. Word has length 28 [2021-10-07 14:56:48,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:48,827 INFO L470 AbstractCegarLoop]: Abstraction has 4004 states and 13818 transitions. [2021-10-07 14:56:48,827 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) [2021-10-07 14:56:48,827 INFO L276 IsEmpty]: Start isEmpty. Operand 4004 states and 13818 transitions. [2021-10-07 14:56:48,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:56:48,835 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:48,836 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] [2021-10-07 14:56:48,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-10-07 14:56:48,836 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:48,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:48,836 INFO L82 PathProgramCache]: Analyzing trace with hash 698904909, now seen corresponding path program 5 times [2021-10-07 14:56:48,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:48,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186967611] [2021-10-07 14:56:48,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:48,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:48,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:48,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:48,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186967611] [2021-10-07 14:56:48,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186967611] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:48,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:48,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-07 14:56:48,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82823080] [2021-10-07 14:56:48,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 14:56:48,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:48,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 14:56:48,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:56:48,962 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) [2021-10-07 14:56:49,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:49,849 INFO L93 Difference]: Finished difference Result 5866 states and 20806 transitions. [2021-10-07 14:56:49,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 14:56:49,849 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 [2021-10-07 14:56:49,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:49,868 INFO L225 Difference]: With dead ends: 5866 [2021-10-07 14:56:49,869 INFO L226 Difference]: Without dead ends: 5794 [2021-10-07 14:56:49,869 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 290.7ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 14:56:49,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5794 states. [2021-10-07 14:56:49,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5794 to 3956. [2021-10-07 14:56:49,966 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) [2021-10-07 14:56:49,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3956 states to 3956 states and 13672 transitions. [2021-10-07 14:56:49,979 INFO L78 Accepts]: Start accepts. Automaton has 3956 states and 13672 transitions. Word has length 28 [2021-10-07 14:56:49,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:49,979 INFO L470 AbstractCegarLoop]: Abstraction has 3956 states and 13672 transitions. [2021-10-07 14:56:49,980 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) [2021-10-07 14:56:49,980 INFO L276 IsEmpty]: Start isEmpty. Operand 3956 states and 13672 transitions. [2021-10-07 14:56:49,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:56:49,988 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:49,988 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] [2021-10-07 14:56:49,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-10-07 14:56:49,988 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:49,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:49,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1541703391, now seen corresponding path program 4 times [2021-10-07 14:56:49,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:49,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147428925] [2021-10-07 14:56:49,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:49,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:50,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:50,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:50,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147428925] [2021-10-07 14:56:50,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147428925] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:50,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:50,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-07 14:56:50,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384034422] [2021-10-07 14:56:50,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 14:56:50,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:50,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 14:56:50,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:56:50,115 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) [2021-10-07 14:56:51,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:51,007 INFO L93 Difference]: Finished difference Result 5768 states and 20511 transitions. [2021-10-07 14:56:51,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 14:56:51,008 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 [2021-10-07 14:56:51,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:51,026 INFO L225 Difference]: With dead ends: 5768 [2021-10-07 14:56:51,026 INFO L226 Difference]: Without dead ends: 5752 [2021-10-07 14:56:51,027 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 322.3ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 14:56:51,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5752 states. [2021-10-07 14:56:51,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5752 to 4004. [2021-10-07 14:56:51,123 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) [2021-10-07 14:56:51,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4004 states to 4004 states and 13794 transitions. [2021-10-07 14:56:51,136 INFO L78 Accepts]: Start accepts. Automaton has 4004 states and 13794 transitions. Word has length 28 [2021-10-07 14:56:51,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:51,136 INFO L470 AbstractCegarLoop]: Abstraction has 4004 states and 13794 transitions. [2021-10-07 14:56:51,136 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) [2021-10-07 14:56:51,136 INFO L276 IsEmpty]: Start isEmpty. Operand 4004 states and 13794 transitions. [2021-10-07 14:56:51,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:56:51,145 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:51,145 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] [2021-10-07 14:56:51,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-10-07 14:56:51,145 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:51,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:51,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1538565098, now seen corresponding path program 1 times [2021-10-07 14:56:51,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:51,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365377328] [2021-10-07 14:56:51,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:51,146 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:51,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:51,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:51,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365377328] [2021-10-07 14:56:51,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365377328] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:51,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:51,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-07 14:56:51,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338809148] [2021-10-07 14:56:51,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 14:56:51,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:51,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 14:56:51,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:56:51,276 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) [2021-10-07 14:56:52,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:52,118 INFO L93 Difference]: Finished difference Result 5880 states and 20808 transitions. [2021-10-07 14:56:52,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 14:56:52,119 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 [2021-10-07 14:56:52,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:52,138 INFO L225 Difference]: With dead ends: 5880 [2021-10-07 14:56:52,138 INFO L226 Difference]: Without dead ends: 5802 [2021-10-07 14:56:52,139 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 301.6ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 14:56:52,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5802 states. [2021-10-07 14:56:52,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5802 to 3956. [2021-10-07 14:56:52,240 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) [2021-10-07 14:56:52,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3956 states to 3956 states and 13648 transitions. [2021-10-07 14:56:52,254 INFO L78 Accepts]: Start accepts. Automaton has 3956 states and 13648 transitions. Word has length 28 [2021-10-07 14:56:52,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:52,254 INFO L470 AbstractCegarLoop]: Abstraction has 3956 states and 13648 transitions. [2021-10-07 14:56:52,254 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) [2021-10-07 14:56:52,255 INFO L276 IsEmpty]: Start isEmpty. Operand 3956 states and 13648 transitions. [2021-10-07 14:56:52,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:56:52,264 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:52,264 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] [2021-10-07 14:56:52,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-10-07 14:56:52,264 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:52,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:52,265 INFO L82 PathProgramCache]: Analyzing trace with hash 2007688164, now seen corresponding path program 2 times [2021-10-07 14:56:52,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:52,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230564567] [2021-10-07 14:56:52,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:52,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:52,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:52,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:52,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230564567] [2021-10-07 14:56:52,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230564567] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:52,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:52,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-07 14:56:52,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139316409] [2021-10-07 14:56:52,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 14:56:52,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:52,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 14:56:52,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:56:52,390 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) [2021-10-07 14:56:53,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:53,278 INFO L93 Difference]: Finished difference Result 5862 states and 20739 transitions. [2021-10-07 14:56:53,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 14:56:53,278 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 [2021-10-07 14:56:53,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:53,296 INFO L225 Difference]: With dead ends: 5862 [2021-10-07 14:56:53,296 INFO L226 Difference]: Without dead ends: 5820 [2021-10-07 14:56:53,297 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 307.0ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 14:56:53,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5820 states. [2021-10-07 14:56:53,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5820 to 4028. [2021-10-07 14:56:53,396 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) [2021-10-07 14:56:53,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4028 states to 4028 states and 13834 transitions. [2021-10-07 14:56:53,410 INFO L78 Accepts]: Start accepts. Automaton has 4028 states and 13834 transitions. Word has length 28 [2021-10-07 14:56:53,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:53,410 INFO L470 AbstractCegarLoop]: Abstraction has 4028 states and 13834 transitions. [2021-10-07 14:56:53,410 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) [2021-10-07 14:56:53,410 INFO L276 IsEmpty]: Start isEmpty. Operand 4028 states and 13834 transitions. [2021-10-07 14:56:53,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:56:53,419 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:53,419 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] [2021-10-07 14:56:53,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-10-07 14:56:53,419 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:53,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:53,420 INFO L82 PathProgramCache]: Analyzing trace with hash 2007661005, now seen corresponding path program 6 times [2021-10-07 14:56:53,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:53,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143331571] [2021-10-07 14:56:53,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:53,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:53,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:53,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:53,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143331571] [2021-10-07 14:56:53,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143331571] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:53,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:53,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-07 14:56:53,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266144684] [2021-10-07 14:56:53,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 14:56:53,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:53,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 14:56:53,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:56:53,546 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) [2021-10-07 14:56:54,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:54,429 INFO L93 Difference]: Finished difference Result 5830 states and 20650 transitions. [2021-10-07 14:56:54,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 14:56:54,429 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 [2021-10-07 14:56:54,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:54,447 INFO L225 Difference]: With dead ends: 5830 [2021-10-07 14:56:54,447 INFO L226 Difference]: Without dead ends: 5650 [2021-10-07 14:56:54,447 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 313.7ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 14:56:54,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5650 states. [2021-10-07 14:56:54,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5650 to 3884. [2021-10-07 14:56:54,541 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) [2021-10-07 14:56:54,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 13378 transitions. [2021-10-07 14:56:54,554 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 13378 transitions. Word has length 28 [2021-10-07 14:56:54,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:54,554 INFO L470 AbstractCegarLoop]: Abstraction has 3884 states and 13378 transitions. [2021-10-07 14:56:54,554 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) [2021-10-07 14:56:54,554 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 13378 transitions. [2021-10-07 14:56:54,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:56:54,563 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:54,563 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] [2021-10-07 14:56:54,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-10-07 14:56:54,563 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:54,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:54,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1787910401, now seen corresponding path program 7 times [2021-10-07 14:56:54,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:54,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470238696] [2021-10-07 14:56:54,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:54,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:54,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:54,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:54,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470238696] [2021-10-07 14:56:54,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470238696] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:54,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:54,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-07 14:56:54,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937075467] [2021-10-07 14:56:54,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:56:54,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:54,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:56:54,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:56:54,695 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) [2021-10-07 14:56:55,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:55,537 INFO L93 Difference]: Finished difference Result 8404 states and 28861 transitions. [2021-10-07 14:56:55,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 14:56:55,538 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 [2021-10-07 14:56:55,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:55,563 INFO L225 Difference]: With dead ends: 8404 [2021-10-07 14:56:55,563 INFO L226 Difference]: Without dead ends: 8380 [2021-10-07 14:56:55,564 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 303.2ms TimeCoverageRelationStatistics Valid=246, Invalid=624, Unknown=0, NotChecked=0, Total=870 [2021-10-07 14:56:55,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8380 states. [2021-10-07 14:56:55,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8380 to 3914. [2021-10-07 14:56:55,680 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) [2021-10-07 14:56:55,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3914 states to 3914 states and 13459 transitions. [2021-10-07 14:56:55,695 INFO L78 Accepts]: Start accepts. Automaton has 3914 states and 13459 transitions. Word has length 28 [2021-10-07 14:56:55,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:55,695 INFO L470 AbstractCegarLoop]: Abstraction has 3914 states and 13459 transitions. [2021-10-07 14:56:55,695 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) [2021-10-07 14:56:55,695 INFO L276 IsEmpty]: Start isEmpty. Operand 3914 states and 13459 transitions. [2021-10-07 14:56:55,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:56:55,704 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:55,704 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] [2021-10-07 14:56:55,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-10-07 14:56:55,704 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:55,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:55,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1948474901, now seen corresponding path program 8 times [2021-10-07 14:56:55,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:55,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127175669] [2021-10-07 14:56:55,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:55,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:55,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:55,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:55,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127175669] [2021-10-07 14:56:55,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127175669] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:55,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:55,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-07 14:56:55,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342004727] [2021-10-07 14:56:55,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:56:55,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:55,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:56:55,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:56:55,833 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) [2021-10-07 14:56:56,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:56,828 INFO L93 Difference]: Finished difference Result 7842 states and 27504 transitions. [2021-10-07 14:56:56,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 14:56:56,829 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 [2021-10-07 14:56:56,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:56,854 INFO L225 Difference]: With dead ends: 7842 [2021-10-07 14:56:56,854 INFO L226 Difference]: Without dead ends: 7800 [2021-10-07 14:56:56,855 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 346.9ms TimeCoverageRelationStatistics Valid=250, Invalid=742, Unknown=0, NotChecked=0, Total=992 [2021-10-07 14:56:56,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7800 states. [2021-10-07 14:56:56,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7800 to 3908. [2021-10-07 14:56:56,972 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) [2021-10-07 14:56:56,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3908 states to 3908 states and 13442 transitions. [2021-10-07 14:56:56,987 INFO L78 Accepts]: Start accepts. Automaton has 3908 states and 13442 transitions. Word has length 28 [2021-10-07 14:56:56,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:56,987 INFO L470 AbstractCegarLoop]: Abstraction has 3908 states and 13442 transitions. [2021-10-07 14:56:56,987 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) [2021-10-07 14:56:56,987 INFO L276 IsEmpty]: Start isEmpty. Operand 3908 states and 13442 transitions. [2021-10-07 14:56:56,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:56:56,995 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:56,995 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] [2021-10-07 14:56:56,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-10-07 14:56:56,996 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:56,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:56,996 INFO L82 PathProgramCache]: Analyzing trace with hash 296275775, now seen corresponding path program 9 times [2021-10-07 14:56:56,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:56,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527149977] [2021-10-07 14:56:56,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:56,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:57,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:57,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:57,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527149977] [2021-10-07 14:56:57,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527149977] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:57,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:57,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-07 14:56:57,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518894305] [2021-10-07 14:56:57,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:56:57,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:57,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:56:57,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:56:57,118 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) [2021-10-07 14:56:57,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:57,990 INFO L93 Difference]: Finished difference Result 7418 states and 25934 transitions. [2021-10-07 14:56:57,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 14:56:57,991 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 [2021-10-07 14:56:57,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:58,012 INFO L225 Difference]: With dead ends: 7418 [2021-10-07 14:56:58,012 INFO L226 Difference]: Without dead ends: 7382 [2021-10-07 14:56:58,013 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 307.2ms TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2021-10-07 14:56:58,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7382 states. [2021-10-07 14:56:58,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7382 to 3998. [2021-10-07 14:56:58,118 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) [2021-10-07 14:56:58,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 13675 transitions. [2021-10-07 14:56:58,131 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 13675 transitions. Word has length 28 [2021-10-07 14:56:58,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:58,131 INFO L470 AbstractCegarLoop]: Abstraction has 3998 states and 13675 transitions. [2021-10-07 14:56:58,131 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) [2021-10-07 14:56:58,131 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 13675 transitions. [2021-10-07 14:56:58,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:56:58,141 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:58,141 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] [2021-10-07 14:56:58,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-10-07 14:56:58,142 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:58,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:58,142 INFO L82 PathProgramCache]: Analyzing trace with hash 289095434, now seen corresponding path program 3 times [2021-10-07 14:56:58,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:58,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939277085] [2021-10-07 14:56:58,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:58,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:58,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:58,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:58,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939277085] [2021-10-07 14:56:58,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939277085] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:58,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:58,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-07 14:56:58,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373544381] [2021-10-07 14:56:58,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:56:58,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:58,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:56:58,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:56:58,267 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) [2021-10-07 14:56:59,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:56:59,170 INFO L93 Difference]: Finished difference Result 7436 states and 25954 transitions. [2021-10-07 14:56:59,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 14:56:59,171 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 [2021-10-07 14:56:59,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:56:59,194 INFO L225 Difference]: With dead ends: 7436 [2021-10-07 14:56:59,194 INFO L226 Difference]: Without dead ends: 7322 [2021-10-07 14:56:59,194 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 332.6ms TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2021-10-07 14:56:59,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7322 states. [2021-10-07 14:56:59,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7322 to 3926. [2021-10-07 14:56:59,302 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) [2021-10-07 14:56:59,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3926 states to 3926 states and 13471 transitions. [2021-10-07 14:56:59,314 INFO L78 Accepts]: Start accepts. Automaton has 3926 states and 13471 transitions. Word has length 28 [2021-10-07 14:56:59,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:56:59,315 INFO L470 AbstractCegarLoop]: Abstraction has 3926 states and 13471 transitions. [2021-10-07 14:56:59,315 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) [2021-10-07 14:56:59,315 INFO L276 IsEmpty]: Start isEmpty. Operand 3926 states and 13471 transitions. [2021-10-07 14:56:59,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:56:59,322 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:56:59,323 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] [2021-10-07 14:56:59,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-10-07 14:56:59,323 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:56:59,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:56:59,323 INFO L82 PathProgramCache]: Analyzing trace with hash -546543313, now seen corresponding path program 10 times [2021-10-07 14:56:59,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:56:59,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986910023] [2021-10-07 14:56:59,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:56:59,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:56:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:56:59,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:56:59,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:56:59,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986910023] [2021-10-07 14:56:59,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986910023] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:56:59,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:56:59,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-07 14:56:59,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940627322] [2021-10-07 14:56:59,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 14:56:59,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:56:59,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 14:56:59,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:56:59,452 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) [2021-10-07 14:57:00,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:00,487 INFO L93 Difference]: Finished difference Result 8096 states and 28297 transitions. [2021-10-07 14:57:00,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 14:57:00,487 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 [2021-10-07 14:57:00,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:00,513 INFO L225 Difference]: With dead ends: 8096 [2021-10-07 14:57:00,513 INFO L226 Difference]: Without dead ends: 8060 [2021-10-07 14:57:00,514 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 368.8ms TimeCoverageRelationStatistics Valid=317, Invalid=873, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 14:57:00,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8060 states. [2021-10-07 14:57:00,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8060 to 3998. [2021-10-07 14:57:00,633 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) [2021-10-07 14:57:00,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 13657 transitions. [2021-10-07 14:57:00,646 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 13657 transitions. Word has length 28 [2021-10-07 14:57:00,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:00,646 INFO L470 AbstractCegarLoop]: Abstraction has 3998 states and 13657 transitions. [2021-10-07 14:57:00,647 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) [2021-10-07 14:57:00,647 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 13657 transitions. [2021-10-07 14:57:00,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:00,655 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:00,655 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] [2021-10-07 14:57:00,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-10-07 14:57:00,656 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:00,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:00,656 INFO L82 PathProgramCache]: Analyzing trace with hash -553723654, now seen corresponding path program 4 times [2021-10-07 14:57:00,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:00,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608289968] [2021-10-07 14:57:00,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:00,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:00,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:00,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:00,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608289968] [2021-10-07 14:57:00,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608289968] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:00,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:00,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-07 14:57:00,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749588015] [2021-10-07 14:57:00,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 14:57:00,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:00,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 14:57:00,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:57:00,803 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) [2021-10-07 14:57:01,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:01,825 INFO L93 Difference]: Finished difference Result 8096 states and 28272 transitions. [2021-10-07 14:57:01,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 14:57:01,826 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 [2021-10-07 14:57:01,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:01,853 INFO L225 Difference]: With dead ends: 8096 [2021-10-07 14:57:01,853 INFO L226 Difference]: Without dead ends: 7952 [2021-10-07 14:57:01,854 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 382.8ms TimeCoverageRelationStatistics Valid=317, Invalid=873, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 14:57:01,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7952 states. [2021-10-07 14:57:01,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7952 to 3896. [2021-10-07 14:57:01,964 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) [2021-10-07 14:57:01,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3896 states to 3896 states and 13376 transitions. [2021-10-07 14:57:01,976 INFO L78 Accepts]: Start accepts. Automaton has 3896 states and 13376 transitions. Word has length 28 [2021-10-07 14:57:01,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:01,976 INFO L470 AbstractCegarLoop]: Abstraction has 3896 states and 13376 transitions. [2021-10-07 14:57:01,976 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) [2021-10-07 14:57:01,976 INFO L276 IsEmpty]: Start isEmpty. Operand 3896 states and 13376 transitions. [2021-10-07 14:57:01,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:01,985 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:01,985 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] [2021-10-07 14:57:01,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-10-07 14:57:01,987 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:01,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:01,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1825644035, now seen corresponding path program 5 times [2021-10-07 14:57:01,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:01,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621288613] [2021-10-07 14:57:01,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:01,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:02,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:02,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621288613] [2021-10-07 14:57:02,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621288613] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:02,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:02,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-07 14:57:02,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415155264] [2021-10-07 14:57:02,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 14:57:02,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:02,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 14:57:02,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-07 14:57:02,132 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) [2021-10-07 14:57:03,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:03,145 INFO L93 Difference]: Finished difference Result 5976 states and 21086 transitions. [2021-10-07 14:57:03,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 14:57:03,146 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 [2021-10-07 14:57:03,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:03,165 INFO L225 Difference]: With dead ends: 5976 [2021-10-07 14:57:03,165 INFO L226 Difference]: Without dead ends: 5960 [2021-10-07 14:57:03,165 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 393.6ms TimeCoverageRelationStatistics Valid=346, Invalid=1060, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 14:57:03,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5960 states. [2021-10-07 14:57:03,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5960 to 4088. [2021-10-07 14:57:03,259 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) [2021-10-07 14:57:03,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 14008 transitions. [2021-10-07 14:57:03,272 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 14008 transitions. Word has length 28 [2021-10-07 14:57:03,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:03,272 INFO L470 AbstractCegarLoop]: Abstraction has 4088 states and 14008 transitions. [2021-10-07 14:57:03,272 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) [2021-10-07 14:57:03,272 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 14008 transitions. [2021-10-07 14:57:03,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:03,280 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:03,280 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] [2021-10-07 14:57:03,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-10-07 14:57:03,281 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:03,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:03,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1829625097, now seen corresponding path program 11 times [2021-10-07 14:57:03,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:03,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753065915] [2021-10-07 14:57:03,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:03,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:03,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:03,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:03,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753065915] [2021-10-07 14:57:03,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753065915] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:03,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:03,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-07 14:57:03,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696033178] [2021-10-07 14:57:03,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 14:57:03,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:03,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 14:57:03,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-07 14:57:03,440 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) [2021-10-07 14:57:04,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:04,457 INFO L93 Difference]: Finished difference Result 6010 states and 21195 transitions. [2021-10-07 14:57:04,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 14:57:04,461 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 [2021-10-07 14:57:04,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:04,478 INFO L225 Difference]: With dead ends: 6010 [2021-10-07 14:57:04,478 INFO L226 Difference]: Without dead ends: 5938 [2021-10-07 14:57:04,478 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 394.2ms TimeCoverageRelationStatistics Valid=346, Invalid=1060, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 14:57:04,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5938 states. [2021-10-07 14:57:04,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5938 to 4040. [2021-10-07 14:57:04,572 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) [2021-10-07 14:57:04,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4040 states to 4040 states and 13862 transitions. [2021-10-07 14:57:04,585 INFO L78 Accepts]: Start accepts. Automaton has 4040 states and 13862 transitions. Word has length 28 [2021-10-07 14:57:04,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:04,585 INFO L470 AbstractCegarLoop]: Abstraction has 4040 states and 13862 transitions. [2021-10-07 14:57:04,585 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) [2021-10-07 14:57:04,585 INFO L276 IsEmpty]: Start isEmpty. Operand 4040 states and 13862 transitions. [2021-10-07 14:57:04,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:04,593 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:04,593 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] [2021-10-07 14:57:04,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-10-07 14:57:04,594 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:04,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:04,594 INFO L82 PathProgramCache]: Analyzing trace with hash -986826615, now seen corresponding path program 6 times [2021-10-07 14:57:04,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:04,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327516581] [2021-10-07 14:57:04,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:04,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:04,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:04,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:04,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327516581] [2021-10-07 14:57:04,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327516581] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:04,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:04,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-07 14:57:04,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392340396] [2021-10-07 14:57:04,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 14:57:04,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:04,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 14:57:04,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-07 14:57:04,738 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) [2021-10-07 14:57:05,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:05,835 INFO L93 Difference]: Finished difference Result 5930 states and 20941 transitions. [2021-10-07 14:57:05,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 14:57:05,835 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 [2021-10-07 14:57:05,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:05,853 INFO L225 Difference]: With dead ends: 5930 [2021-10-07 14:57:05,853 INFO L226 Difference]: Without dead ends: 5914 [2021-10-07 14:57:05,854 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 412.2ms TimeCoverageRelationStatistics Valid=346, Invalid=1060, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 14:57:05,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5914 states. [2021-10-07 14:57:05,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5914 to 4088. [2021-10-07 14:57:05,947 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) [2021-10-07 14:57:05,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 13984 transitions. [2021-10-07 14:57:05,961 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 13984 transitions. Word has length 28 [2021-10-07 14:57:05,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:05,961 INFO L470 AbstractCegarLoop]: Abstraction has 4088 states and 13984 transitions. [2021-10-07 14:57:05,961 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) [2021-10-07 14:57:05,961 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 13984 transitions. [2021-10-07 14:57:05,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:05,969 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:05,969 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] [2021-10-07 14:57:05,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-10-07 14:57:05,970 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:05,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:05,970 INFO L82 PathProgramCache]: Analyzing trace with hash -989964908, now seen corresponding path program 5 times [2021-10-07 14:57:05,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:05,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439525673] [2021-10-07 14:57:05,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:05,971 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:06,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:06,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:06,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439525673] [2021-10-07 14:57:06,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439525673] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:06,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:06,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-07 14:57:06,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380896269] [2021-10-07 14:57:06,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 14:57:06,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:06,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 14:57:06,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-07 14:57:06,129 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) [2021-10-07 14:57:07,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:07,143 INFO L93 Difference]: Finished difference Result 6000 states and 21127 transitions. [2021-10-07 14:57:07,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 14:57:07,143 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 [2021-10-07 14:57:07,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:07,163 INFO L225 Difference]: With dead ends: 6000 [2021-10-07 14:57:07,164 INFO L226 Difference]: Without dead ends: 5922 [2021-10-07 14:57:07,164 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 405.9ms TimeCoverageRelationStatistics Valid=346, Invalid=1060, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 14:57:07,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5922 states. [2021-10-07 14:57:07,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5922 to 4040. [2021-10-07 14:57:07,267 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) [2021-10-07 14:57:07,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4040 states to 4040 states and 13838 transitions. [2021-10-07 14:57:07,280 INFO L78 Accepts]: Start accepts. Automaton has 4040 states and 13838 transitions. Word has length 28 [2021-10-07 14:57:07,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:07,281 INFO L470 AbstractCegarLoop]: Abstraction has 4040 states and 13838 transitions. [2021-10-07 14:57:07,281 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) [2021-10-07 14:57:07,281 INFO L276 IsEmpty]: Start isEmpty. Operand 4040 states and 13838 transitions. [2021-10-07 14:57:07,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:07,289 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:07,289 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] [2021-10-07 14:57:07,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-10-07 14:57:07,290 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:07,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:07,290 INFO L82 PathProgramCache]: Analyzing trace with hash -520841842, now seen corresponding path program 6 times [2021-10-07 14:57:07,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:07,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511970105] [2021-10-07 14:57:07,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:07,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:07,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:07,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:07,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511970105] [2021-10-07 14:57:07,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511970105] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:07,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:07,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-07 14:57:07,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365838478] [2021-10-07 14:57:07,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 14:57:07,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:07,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 14:57:07,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-07 14:57:07,453 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) [2021-10-07 14:57:08,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:08,529 INFO L93 Difference]: Finished difference Result 6028 states and 21169 transitions. [2021-10-07 14:57:08,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 14:57:08,529 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 [2021-10-07 14:57:08,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:08,550 INFO L225 Difference]: With dead ends: 6028 [2021-10-07 14:57:08,550 INFO L226 Difference]: Without dead ends: 5986 [2021-10-07 14:57:08,550 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 426.0ms TimeCoverageRelationStatistics Valid=346, Invalid=1060, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 14:57:08,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5986 states. [2021-10-07 14:57:08,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5986 to 4112. [2021-10-07 14:57:08,650 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) [2021-10-07 14:57:08,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4112 states to 4112 states and 14024 transitions. [2021-10-07 14:57:08,665 INFO L78 Accepts]: Start accepts. Automaton has 4112 states and 14024 transitions. Word has length 28 [2021-10-07 14:57:08,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:08,665 INFO L470 AbstractCegarLoop]: Abstraction has 4112 states and 14024 transitions. [2021-10-07 14:57:08,665 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) [2021-10-07 14:57:08,665 INFO L276 IsEmpty]: Start isEmpty. Operand 4112 states and 14024 transitions. [2021-10-07 14:57:08,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:08,674 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:08,674 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] [2021-10-07 14:57:08,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-10-07 14:57:08,675 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:08,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:08,675 INFO L82 PathProgramCache]: Analyzing trace with hash -520869001, now seen corresponding path program 12 times [2021-10-07 14:57:08,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:08,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873557225] [2021-10-07 14:57:08,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:08,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:08,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:08,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:08,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873557225] [2021-10-07 14:57:08,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873557225] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:08,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:08,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-07 14:57:08,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196168158] [2021-10-07 14:57:08,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 14:57:08,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:08,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 14:57:08,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-07 14:57:08,823 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) [2021-10-07 14:57:09,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:09,853 INFO L93 Difference]: Finished difference Result 5974 states and 21029 transitions. [2021-10-07 14:57:09,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 14:57:09,853 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 [2021-10-07 14:57:09,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:09,870 INFO L225 Difference]: With dead ends: 5974 [2021-10-07 14:57:09,871 INFO L226 Difference]: Without dead ends: 5602 [2021-10-07 14:57:09,871 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 401.5ms TimeCoverageRelationStatistics Valid=346, Invalid=1060, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 14:57:09,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5602 states. [2021-10-07 14:57:09,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5602 to 3872. [2021-10-07 14:57:09,958 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) [2021-10-07 14:57:09,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3872 states to 3872 states and 13240 transitions. [2021-10-07 14:57:09,971 INFO L78 Accepts]: Start accepts. Automaton has 3872 states and 13240 transitions. Word has length 28 [2021-10-07 14:57:09,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:09,971 INFO L470 AbstractCegarLoop]: Abstraction has 3872 states and 13240 transitions. [2021-10-07 14:57:09,971 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) [2021-10-07 14:57:09,971 INFO L276 IsEmpty]: Start isEmpty. Operand 3872 states and 13240 transitions. [2021-10-07 14:57:09,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:09,979 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:09,979 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] [2021-10-07 14:57:09,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-10-07 14:57:09,979 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:09,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:09,980 INFO L82 PathProgramCache]: Analyzing trace with hash 416139743, now seen corresponding path program 7 times [2021-10-07 14:57:09,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:09,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785755790] [2021-10-07 14:57:09,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:09,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:10,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:10,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:10,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785755790] [2021-10-07 14:57:10,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785755790] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:10,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:10,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-07 14:57:10,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416236242] [2021-10-07 14:57:10,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:57:10,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:10,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:57:10,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:57:10,102 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) [2021-10-07 14:57:10,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:10,943 INFO L93 Difference]: Finished difference Result 7122 states and 24722 transitions. [2021-10-07 14:57:10,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 14:57:10,944 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 [2021-10-07 14:57:10,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:10,966 INFO L225 Difference]: With dead ends: 7122 [2021-10-07 14:57:10,966 INFO L226 Difference]: Without dead ends: 7106 [2021-10-07 14:57:10,966 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 305.3ms TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2021-10-07 14:57:10,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7106 states. [2021-10-07 14:57:11,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7106 to 4008. [2021-10-07 14:57:11,067 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) [2021-10-07 14:57:11,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 13682 transitions. [2021-10-07 14:57:11,080 INFO L78 Accepts]: Start accepts. Automaton has 4008 states and 13682 transitions. Word has length 28 [2021-10-07 14:57:11,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:11,080 INFO L470 AbstractCegarLoop]: Abstraction has 4008 states and 13682 transitions. [2021-10-07 14:57:11,080 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) [2021-10-07 14:57:11,080 INFO L276 IsEmpty]: Start isEmpty. Operand 4008 states and 13682 transitions. [2021-10-07 14:57:11,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:11,088 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:11,088 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] [2021-10-07 14:57:11,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-10-07 14:57:11,088 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:11,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:11,089 INFO L82 PathProgramCache]: Analyzing trace with hash 412158681, now seen corresponding path program 13 times [2021-10-07 14:57:11,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:11,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529962121] [2021-10-07 14:57:11,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:11,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:11,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:11,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:11,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529962121] [2021-10-07 14:57:11,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529962121] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:11,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:11,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-07 14:57:11,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630001877] [2021-10-07 14:57:11,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:57:11,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:11,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:57:11,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:57:11,255 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) [2021-10-07 14:57:12,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:12,159 INFO L93 Difference]: Finished difference Result 7170 states and 24851 transitions. [2021-10-07 14:57:12,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 14:57:12,160 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 [2021-10-07 14:57:12,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:12,182 INFO L225 Difference]: With dead ends: 7170 [2021-10-07 14:57:12,182 INFO L226 Difference]: Without dead ends: 7122 [2021-10-07 14:57:12,183 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 317.2ms TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2021-10-07 14:57:12,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7122 states. [2021-10-07 14:57:12,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7122 to 3978. [2021-10-07 14:57:12,291 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) [2021-10-07 14:57:12,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3978 states to 3978 states and 13607 transitions. [2021-10-07 14:57:12,304 INFO L78 Accepts]: Start accepts. Automaton has 3978 states and 13607 transitions. Word has length 28 [2021-10-07 14:57:12,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:12,305 INFO L470 AbstractCegarLoop]: Abstraction has 3978 states and 13607 transitions. [2021-10-07 14:57:12,305 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) [2021-10-07 14:57:12,305 INFO L276 IsEmpty]: Start isEmpty. Operand 3978 states and 13607 transitions. [2021-10-07 14:57:12,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:12,313 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:12,314 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] [2021-10-07 14:57:12,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-10-07 14:57:12,314 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:12,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:12,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1420425087, now seen corresponding path program 14 times [2021-10-07 14:57:12,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:12,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104470962] [2021-10-07 14:57:12,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:12,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:12,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:12,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:12,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104470962] [2021-10-07 14:57:12,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104470962] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:12,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:12,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-07 14:57:12,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920687895] [2021-10-07 14:57:12,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:57:12,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:12,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:57:12,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:57:12,429 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) [2021-10-07 14:57:13,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:13,309 INFO L93 Difference]: Finished difference Result 8954 states and 30500 transitions. [2021-10-07 14:57:13,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 14:57:13,309 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 [2021-10-07 14:57:13,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:13,334 INFO L225 Difference]: With dead ends: 8954 [2021-10-07 14:57:13,334 INFO L226 Difference]: Without dead ends: 8930 [2021-10-07 14:57:13,335 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 291.9ms TimeCoverageRelationStatistics Valid=259, Invalid=671, Unknown=0, NotChecked=0, Total=930 [2021-10-07 14:57:13,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8930 states. [2021-10-07 14:57:13,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8930 to 3980. [2021-10-07 14:57:13,452 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) [2021-10-07 14:57:13,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3980 states to 3980 states and 13610 transitions. [2021-10-07 14:57:13,464 INFO L78 Accepts]: Start accepts. Automaton has 3980 states and 13610 transitions. Word has length 28 [2021-10-07 14:57:13,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:13,464 INFO L470 AbstractCegarLoop]: Abstraction has 3980 states and 13610 transitions. [2021-10-07 14:57:13,465 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) [2021-10-07 14:57:13,467 INFO L276 IsEmpty]: Start isEmpty. Operand 3980 states and 13610 transitions. [2021-10-07 14:57:13,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:13,476 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:13,476 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] [2021-10-07 14:57:13,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-10-07 14:57:13,477 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:13,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:13,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1298877807, now seen corresponding path program 15 times [2021-10-07 14:57:13,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:13,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980756970] [2021-10-07 14:57:13,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:13,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:13,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:13,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:13,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980756970] [2021-10-07 14:57:13,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980756970] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:13,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:13,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-07 14:57:13,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443207746] [2021-10-07 14:57:13,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:57:13,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:13,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:57:13,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:57:13,591 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) [2021-10-07 14:57:14,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:14,629 INFO L93 Difference]: Finished difference Result 7708 states and 26846 transitions. [2021-10-07 14:57:14,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 14:57:14,630 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 [2021-10-07 14:57:14,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:14,654 INFO L225 Difference]: With dead ends: 7708 [2021-10-07 14:57:14,655 INFO L226 Difference]: Without dead ends: 7674 [2021-10-07 14:57:14,655 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 382.5ms TimeCoverageRelationStatistics Valid=280, Invalid=842, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 14:57:14,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7674 states. [2021-10-07 14:57:14,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7674 to 3970. [2021-10-07 14:57:14,760 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) [2021-10-07 14:57:14,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3970 states to 3970 states and 13587 transitions. [2021-10-07 14:57:14,772 INFO L78 Accepts]: Start accepts. Automaton has 3970 states and 13587 transitions. Word has length 28 [2021-10-07 14:57:14,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:14,772 INFO L470 AbstractCegarLoop]: Abstraction has 3970 states and 13587 transitions. [2021-10-07 14:57:14,773 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) [2021-10-07 14:57:14,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3970 states and 13587 transitions. [2021-10-07 14:57:14,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:14,780 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:14,780 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] [2021-10-07 14:57:14,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-10-07 14:57:14,781 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:14,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:14,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1422707937, now seen corresponding path program 8 times [2021-10-07 14:57:14,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:14,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449351106] [2021-10-07 14:57:14,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:14,781 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:14,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:14,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:14,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449351106] [2021-10-07 14:57:14,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449351106] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:14,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:14,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-07 14:57:14,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680046600] [2021-10-07 14:57:14,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 14:57:14,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:14,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 14:57:14,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:57:14,898 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) [2021-10-07 14:57:15,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:15,896 INFO L93 Difference]: Finished difference Result 7440 states and 25779 transitions. [2021-10-07 14:57:15,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 14:57:15,897 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 [2021-10-07 14:57:15,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:15,921 INFO L225 Difference]: With dead ends: 7440 [2021-10-07 14:57:15,921 INFO L226 Difference]: Without dead ends: 7424 [2021-10-07 14:57:15,921 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 365.4ms TimeCoverageRelationStatistics Valid=317, Invalid=873, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 14:57:15,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7424 states. [2021-10-07 14:57:16,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7424 to 4018. [2021-10-07 14:57:16,035 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) [2021-10-07 14:57:16,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4018 states to 4018 states and 13709 transitions. [2021-10-07 14:57:16,050 INFO L78 Accepts]: Start accepts. Automaton has 4018 states and 13709 transitions. Word has length 28 [2021-10-07 14:57:16,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:16,050 INFO L470 AbstractCegarLoop]: Abstraction has 4018 states and 13709 transitions. [2021-10-07 14:57:16,050 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) [2021-10-07 14:57:16,050 INFO L276 IsEmpty]: Start isEmpty. Operand 4018 states and 13709 transitions. [2021-10-07 14:57:16,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:16,059 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:16,059 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] [2021-10-07 14:57:16,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-10-07 14:57:16,059 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:16,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:16,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1426688999, now seen corresponding path program 16 times [2021-10-07 14:57:16,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:16,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230067005] [2021-10-07 14:57:16,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:16,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:16,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:16,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:16,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230067005] [2021-10-07 14:57:16,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230067005] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:16,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:16,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-07 14:57:16,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343046007] [2021-10-07 14:57:16,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 14:57:16,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:16,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 14:57:16,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:57:16,186 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) [2021-10-07 14:57:17,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:17,174 INFO L93 Difference]: Finished difference Result 7464 states and 25844 transitions. [2021-10-07 14:57:17,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 14:57:17,175 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 [2021-10-07 14:57:17,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:17,198 INFO L225 Difference]: With dead ends: 7464 [2021-10-07 14:57:17,198 INFO L226 Difference]: Without dead ends: 7384 [2021-10-07 14:57:17,199 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 386.4ms TimeCoverageRelationStatistics Valid=330, Invalid=930, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 14:57:17,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7384 states. [2021-10-07 14:57:17,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7384 to 3962. [2021-10-07 14:57:17,304 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) [2021-10-07 14:57:17,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3962 states to 3962 states and 13555 transitions. [2021-10-07 14:57:17,318 INFO L78 Accepts]: Start accepts. Automaton has 3962 states and 13555 transitions. Word has length 28 [2021-10-07 14:57:17,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:17,318 INFO L470 AbstractCegarLoop]: Abstraction has 3962 states and 13555 transitions. [2021-10-07 14:57:17,318 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) [2021-10-07 14:57:17,318 INFO L276 IsEmpty]: Start isEmpty. Operand 3962 states and 13555 transitions. [2021-10-07 14:57:17,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:17,326 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:17,326 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] [2021-10-07 14:57:17,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-10-07 14:57:17,326 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:17,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:17,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1143962271, now seen corresponding path program 9 times [2021-10-07 14:57:17,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:17,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361606993] [2021-10-07 14:57:17,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:17,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:17,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:17,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:17,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361606993] [2021-10-07 14:57:17,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361606993] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:17,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:17,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-07 14:57:17,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044187743] [2021-10-07 14:57:17,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 14:57:17,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:17,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 14:57:17,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:57:17,458 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) [2021-10-07 14:57:18,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:18,325 INFO L93 Difference]: Finished difference Result 5962 states and 20982 transitions. [2021-10-07 14:57:18,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 14:57:18,326 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 [2021-10-07 14:57:18,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:18,346 INFO L225 Difference]: With dead ends: 5962 [2021-10-07 14:57:18,346 INFO L226 Difference]: Without dead ends: 5946 [2021-10-07 14:57:18,347 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 306.1ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 14:57:18,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5946 states. [2021-10-07 14:57:18,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5946 to 4130. [2021-10-07 14:57:18,442 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) [2021-10-07 14:57:18,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 14107 transitions. [2021-10-07 14:57:18,455 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 14107 transitions. Word has length 28 [2021-10-07 14:57:18,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:18,455 INFO L470 AbstractCegarLoop]: Abstraction has 4130 states and 14107 transitions. [2021-10-07 14:57:18,455 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) [2021-10-07 14:57:18,455 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 14107 transitions. [2021-10-07 14:57:18,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:18,463 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:18,463 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] [2021-10-07 14:57:18,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-10-07 14:57:18,463 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:18,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:18,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1139981209, now seen corresponding path program 17 times [2021-10-07 14:57:18,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:18,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141430390] [2021-10-07 14:57:18,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:18,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:18,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:18,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:18,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141430390] [2021-10-07 14:57:18,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141430390] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:18,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:18,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-07 14:57:18,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365326087] [2021-10-07 14:57:18,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 14:57:18,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:18,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 14:57:18,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:57:18,580 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) [2021-10-07 14:57:19,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:19,463 INFO L93 Difference]: Finished difference Result 6026 states and 21163 transitions. [2021-10-07 14:57:19,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 14:57:19,464 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 [2021-10-07 14:57:19,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:19,483 INFO L225 Difference]: With dead ends: 6026 [2021-10-07 14:57:19,483 INFO L226 Difference]: Without dead ends: 5954 [2021-10-07 14:57:19,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 321.9ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 14:57:19,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5954 states. [2021-10-07 14:57:19,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5954 to 4082. [2021-10-07 14:57:19,583 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) [2021-10-07 14:57:19,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4082 states to 4082 states and 13961 transitions. [2021-10-07 14:57:19,597 INFO L78 Accepts]: Start accepts. Automaton has 4082 states and 13961 transitions. Word has length 28 [2021-10-07 14:57:19,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:19,598 INFO L470 AbstractCegarLoop]: Abstraction has 4082 states and 13961 transitions. [2021-10-07 14:57:19,598 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) [2021-10-07 14:57:19,598 INFO L276 IsEmpty]: Start isEmpty. Operand 4082 states and 13961 transitions. [2021-10-07 14:57:19,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:19,606 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:19,606 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] [2021-10-07 14:57:19,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-10-07 14:57:19,606 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:19,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:19,607 INFO L82 PathProgramCache]: Analyzing trace with hash 226064863, now seen corresponding path program 10 times [2021-10-07 14:57:19,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:19,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409242859] [2021-10-07 14:57:19,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:19,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:19,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:19,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:19,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409242859] [2021-10-07 14:57:19,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409242859] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:19,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:19,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-07 14:57:19,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278370850] [2021-10-07 14:57:19,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 14:57:19,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:19,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 14:57:19,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:57:19,729 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) [2021-10-07 14:57:20,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:20,624 INFO L93 Difference]: Finished difference Result 5914 states and 20828 transitions. [2021-10-07 14:57:20,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 14:57:20,624 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 [2021-10-07 14:57:20,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:20,642 INFO L225 Difference]: With dead ends: 5914 [2021-10-07 14:57:20,642 INFO L226 Difference]: Without dead ends: 5898 [2021-10-07 14:57:20,643 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 310.4ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 14:57:20,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5898 states. [2021-10-07 14:57:20,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5898 to 4130. [2021-10-07 14:57:20,738 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) [2021-10-07 14:57:20,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 14083 transitions. [2021-10-07 14:57:20,751 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 14083 transitions. Word has length 28 [2021-10-07 14:57:20,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:20,751 INFO L470 AbstractCegarLoop]: Abstraction has 4130 states and 14083 transitions. [2021-10-07 14:57:20,751 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) [2021-10-07 14:57:20,751 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 14083 transitions. [2021-10-07 14:57:20,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:20,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:20,759 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] [2021-10-07 14:57:20,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-10-07 14:57:20,760 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:20,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:20,760 INFO L82 PathProgramCache]: Analyzing trace with hash 220300202, now seen corresponding path program 1 times [2021-10-07 14:57:20,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:20,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675627377] [2021-10-07 14:57:20,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:20,760 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:20,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:20,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:20,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675627377] [2021-10-07 14:57:20,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675627377] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:20,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:20,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-07 14:57:20,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576171390] [2021-10-07 14:57:20,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 14:57:20,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:20,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 14:57:20,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:57:20,878 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) [2021-10-07 14:57:21,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:21,709 INFO L93 Difference]: Finished difference Result 5986 states and 21031 transitions. [2021-10-07 14:57:21,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 14:57:21,710 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 [2021-10-07 14:57:21,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:21,728 INFO L225 Difference]: With dead ends: 5986 [2021-10-07 14:57:21,729 INFO L226 Difference]: Without dead ends: 5920 [2021-10-07 14:57:21,729 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 292.1ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 14:57:21,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5920 states. [2021-10-07 14:57:21,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5920 to 4082. [2021-10-07 14:57:21,822 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) [2021-10-07 14:57:21,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4082 states to 4082 states and 13937 transitions. [2021-10-07 14:57:21,835 INFO L78 Accepts]: Start accepts. Automaton has 4082 states and 13937 transitions. Word has length 28 [2021-10-07 14:57:21,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:21,836 INFO L470 AbstractCegarLoop]: Abstraction has 4082 states and 13937 transitions. [2021-10-07 14:57:21,836 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) [2021-10-07 14:57:21,836 INFO L276 IsEmpty]: Start isEmpty. Operand 4082 states and 13937 transitions. [2021-10-07 14:57:21,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:21,844 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:21,844 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] [2021-10-07 14:57:21,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-10-07 14:57:21,844 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:21,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:21,844 INFO L82 PathProgramCache]: Analyzing trace with hash 689480787, now seen corresponding path program 18 times [2021-10-07 14:57:21,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:21,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158382752] [2021-10-07 14:57:21,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:21,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:21,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:21,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:21,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158382752] [2021-10-07 14:57:21,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158382752] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:21,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:21,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-07 14:57:21,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405114978] [2021-10-07 14:57:21,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 14:57:21,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:21,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 14:57:21,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:57:21,963 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) [2021-10-07 14:57:22,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:22,857 INFO L93 Difference]: Finished difference Result 5996 states and 21038 transitions. [2021-10-07 14:57:22,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 14:57:22,858 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 [2021-10-07 14:57:22,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:22,884 INFO L225 Difference]: With dead ends: 5996 [2021-10-07 14:57:22,884 INFO L226 Difference]: Without dead ends: 5966 [2021-10-07 14:57:22,884 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 318.4ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 14:57:22,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5966 states. [2021-10-07 14:57:23,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5966 to 4136. [2021-10-07 14:57:23,006 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) [2021-10-07 14:57:23,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4136 states to 4136 states and 14075 transitions. [2021-10-07 14:57:23,019 INFO L78 Accepts]: Start accepts. Automaton has 4136 states and 14075 transitions. Word has length 28 [2021-10-07 14:57:23,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:23,020 INFO L470 AbstractCegarLoop]: Abstraction has 4136 states and 14075 transitions. [2021-10-07 14:57:23,020 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) [2021-10-07 14:57:23,020 INFO L276 IsEmpty]: Start isEmpty. Operand 4136 states and 14075 transitions. [2021-10-07 14:57:23,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:23,028 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:23,028 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] [2021-10-07 14:57:23,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-10-07 14:57:23,028 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:23,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:23,028 INFO L82 PathProgramCache]: Analyzing trace with hash 689423268, now seen corresponding path program 2 times [2021-10-07 14:57:23,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:23,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406998770] [2021-10-07 14:57:23,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:23,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:23,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:23,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:23,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406998770] [2021-10-07 14:57:23,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406998770] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:23,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:23,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-07 14:57:23,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890721005] [2021-10-07 14:57:23,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 14:57:23,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:23,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 14:57:23,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:57:23,150 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) [2021-10-07 14:57:24,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:24,055 INFO L93 Difference]: Finished difference Result 5944 states and 20889 transitions. [2021-10-07 14:57:24,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 14:57:24,055 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 [2021-10-07 14:57:24,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:24,075 INFO L225 Difference]: With dead ends: 5944 [2021-10-07 14:57:24,075 INFO L226 Difference]: Without dead ends: 5794 [2021-10-07 14:57:24,075 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 317.9ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 14:57:24,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5794 states. [2021-10-07 14:57:24,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5794 to 4010. [2021-10-07 14:57:24,167 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) [2021-10-07 14:57:24,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4010 states to 4010 states and 13667 transitions. [2021-10-07 14:57:24,180 INFO L78 Accepts]: Start accepts. Automaton has 4010 states and 13667 transitions. Word has length 28 [2021-10-07 14:57:24,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:24,180 INFO L470 AbstractCegarLoop]: Abstraction has 4010 states and 13667 transitions. [2021-10-07 14:57:24,180 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) [2021-10-07 14:57:24,180 INFO L276 IsEmpty]: Start isEmpty. Operand 4010 states and 13667 transitions. [2021-10-07 14:57:24,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:24,188 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:24,188 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] [2021-10-07 14:57:24,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-10-07 14:57:24,188 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:24,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:24,189 INFO L82 PathProgramCache]: Analyzing trace with hash -582192449, now seen corresponding path program 19 times [2021-10-07 14:57:24,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:24,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988177238] [2021-10-07 14:57:24,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:24,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:24,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:24,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:24,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988177238] [2021-10-07 14:57:24,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988177238] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:24,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:24,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-07 14:57:24,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209558533] [2021-10-07 14:57:24,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:57:24,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:24,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:57:24,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:57:24,297 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) [2021-10-07 14:57:25,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:25,186 INFO L93 Difference]: Finished difference Result 8734 states and 29687 transitions. [2021-10-07 14:57:25,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 14:57:25,187 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 [2021-10-07 14:57:25,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:25,213 INFO L225 Difference]: With dead ends: 8734 [2021-10-07 14:57:25,213 INFO L226 Difference]: Without dead ends: 8710 [2021-10-07 14:57:25,213 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 291.0ms TimeCoverageRelationStatistics Valid=246, Invalid=624, Unknown=0, NotChecked=0, Total=870 [2021-10-07 14:57:25,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8710 states. [2021-10-07 14:57:25,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8710 to 4032. [2021-10-07 14:57:25,331 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) [2021-10-07 14:57:25,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4032 states to 4032 states and 13726 transitions. [2021-10-07 14:57:25,348 INFO L78 Accepts]: Start accepts. Automaton has 4032 states and 13726 transitions. Word has length 28 [2021-10-07 14:57:25,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:25,349 INFO L470 AbstractCegarLoop]: Abstraction has 4032 states and 13726 transitions. [2021-10-07 14:57:25,349 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) [2021-10-07 14:57:25,349 INFO L276 IsEmpty]: Start isEmpty. Operand 4032 states and 13726 transitions. [2021-10-07 14:57:25,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:25,357 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:25,357 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] [2021-10-07 14:57:25,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-10-07 14:57:25,357 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:25,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:25,358 INFO L82 PathProgramCache]: Analyzing trace with hash -716251949, now seen corresponding path program 20 times [2021-10-07 14:57:25,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:25,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373034210] [2021-10-07 14:57:25,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:25,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:25,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:25,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:25,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373034210] [2021-10-07 14:57:25,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373034210] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:25,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:25,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-07 14:57:25,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353742009] [2021-10-07 14:57:25,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:57:25,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:25,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:57:25,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:57:25,470 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) [2021-10-07 14:57:26,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:26,476 INFO L93 Difference]: Finished difference Result 7866 states and 27374 transitions. [2021-10-07 14:57:26,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 14:57:26,477 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 [2021-10-07 14:57:26,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:26,503 INFO L225 Difference]: With dead ends: 7866 [2021-10-07 14:57:26,503 INFO L226 Difference]: Without dead ends: 7832 [2021-10-07 14:57:26,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 362.3ms TimeCoverageRelationStatistics Valid=250, Invalid=742, Unknown=0, NotChecked=0, Total=992 [2021-10-07 14:57:26,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7832 states. [2021-10-07 14:57:26,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7832 to 4028. [2021-10-07 14:57:26,615 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) [2021-10-07 14:57:26,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4028 states to 4028 states and 13715 transitions. [2021-10-07 14:57:26,628 INFO L78 Accepts]: Start accepts. Automaton has 4028 states and 13715 transitions. Word has length 28 [2021-10-07 14:57:26,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:26,628 INFO L470 AbstractCegarLoop]: Abstraction has 4028 states and 13715 transitions. [2021-10-07 14:57:26,629 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) [2021-10-07 14:57:26,629 INFO L276 IsEmpty]: Start isEmpty. Operand 4028 states and 13715 transitions. [2021-10-07 14:57:26,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:26,638 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:26,638 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] [2021-10-07 14:57:26,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-10-07 14:57:26,638 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:26,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:26,639 INFO L82 PathProgramCache]: Analyzing trace with hash -937302343, now seen corresponding path program 21 times [2021-10-07 14:57:26,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:26,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65878634] [2021-10-07 14:57:26,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:26,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:26,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:26,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:26,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65878634] [2021-10-07 14:57:26,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65878634] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:26,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:26,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-07 14:57:26,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292137354] [2021-10-07 14:57:26,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:57:26,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:26,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:57:26,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:57:26,769 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) [2021-10-07 14:57:27,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:27,620 INFO L93 Difference]: Finished difference Result 7484 states and 26035 transitions. [2021-10-07 14:57:27,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 14:57:27,621 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 [2021-10-07 14:57:27,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:27,645 INFO L225 Difference]: With dead ends: 7484 [2021-10-07 14:57:27,645 INFO L226 Difference]: Without dead ends: 7454 [2021-10-07 14:57:27,645 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 301.5ms TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2021-10-07 14:57:27,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7454 states. [2021-10-07 14:57:27,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7454 to 4082. [2021-10-07 14:57:27,758 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) [2021-10-07 14:57:27,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4082 states to 4082 states and 13854 transitions. [2021-10-07 14:57:27,771 INFO L78 Accepts]: Start accepts. Automaton has 4082 states and 13854 transitions. Word has length 28 [2021-10-07 14:57:27,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:27,771 INFO L470 AbstractCegarLoop]: Abstraction has 4082 states and 13854 transitions. [2021-10-07 14:57:27,771 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) [2021-10-07 14:57:27,771 INFO L276 IsEmpty]: Start isEmpty. Operand 4082 states and 13854 transitions. [2021-10-07 14:57:27,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:27,779 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:27,779 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] [2021-10-07 14:57:27,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-10-07 14:57:27,779 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:27,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:27,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1029169462, now seen corresponding path program 3 times [2021-10-07 14:57:27,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:27,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822324789] [2021-10-07 14:57:27,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:27,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:27,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:27,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:27,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822324789] [2021-10-07 14:57:27,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822324789] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:27,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:27,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-07 14:57:27,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236283040] [2021-10-07 14:57:27,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:57:27,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:27,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:57:27,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:57:27,892 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) [2021-10-07 14:57:28,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:28,813 INFO L93 Difference]: Finished difference Result 7448 states and 25923 transitions. [2021-10-07 14:57:28,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 14:57:28,814 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 [2021-10-07 14:57:28,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:28,838 INFO L225 Difference]: With dead ends: 7448 [2021-10-07 14:57:28,839 INFO L226 Difference]: Without dead ends: 7376 [2021-10-07 14:57:28,839 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 321.6ms TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2021-10-07 14:57:28,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7376 states. [2021-10-07 14:57:28,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7376 to 4034. [2021-10-07 14:57:28,947 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) [2021-10-07 14:57:28,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4034 states to 4034 states and 13720 transitions. [2021-10-07 14:57:28,961 INFO L78 Accepts]: Start accepts. Automaton has 4034 states and 13720 transitions. Word has length 28 [2021-10-07 14:57:28,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:28,961 INFO L470 AbstractCegarLoop]: Abstraction has 4034 states and 13720 transitions. [2021-10-07 14:57:28,961 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) [2021-10-07 14:57:28,961 INFO L276 IsEmpty]: Start isEmpty. Operand 4034 states and 13720 transitions. [2021-10-07 14:57:28,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:28,970 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:28,970 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] [2021-10-07 14:57:28,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-10-07 14:57:28,970 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:28,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:28,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1780121431, now seen corresponding path program 22 times [2021-10-07 14:57:28,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:28,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779615059] [2021-10-07 14:57:28,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:28,971 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:29,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:29,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:29,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779615059] [2021-10-07 14:57:29,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779615059] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:29,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:29,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-07 14:57:29,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447699754] [2021-10-07 14:57:29,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 14:57:29,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:29,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 14:57:29,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:57:29,093 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) [2021-10-07 14:57:30,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:30,152 INFO L93 Difference]: Finished difference Result 8162 states and 28404 transitions. [2021-10-07 14:57:30,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 14:57:30,153 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 [2021-10-07 14:57:30,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:30,177 INFO L225 Difference]: With dead ends: 8162 [2021-10-07 14:57:30,177 INFO L226 Difference]: Without dead ends: 8132 [2021-10-07 14:57:30,177 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 368.9ms TimeCoverageRelationStatistics Valid=317, Invalid=873, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 14:57:30,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8132 states. [2021-10-07 14:57:30,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8132 to 4088. [2021-10-07 14:57:30,289 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) [2021-10-07 14:57:30,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 13858 transitions. [2021-10-07 14:57:30,302 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 13858 transitions. Word has length 28 [2021-10-07 14:57:30,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:30,303 INFO L470 AbstractCegarLoop]: Abstraction has 4088 states and 13858 transitions. [2021-10-07 14:57:30,303 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) [2021-10-07 14:57:30,303 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 13858 transitions. [2021-10-07 14:57:30,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:30,311 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:30,311 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] [2021-10-07 14:57:30,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-10-07 14:57:30,311 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:30,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:30,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1871988550, now seen corresponding path program 4 times [2021-10-07 14:57:30,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:30,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483740205] [2021-10-07 14:57:30,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:30,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:30,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:30,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:30,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483740205] [2021-10-07 14:57:30,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483740205] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:30,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:30,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-07 14:57:30,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241745041] [2021-10-07 14:57:30,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 14:57:30,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:30,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 14:57:30,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:57:30,434 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) [2021-10-07 14:57:31,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:31,425 INFO L93 Difference]: Finished difference Result 8114 states and 28263 transitions. [2021-10-07 14:57:31,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 14:57:31,425 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 [2021-10-07 14:57:31,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:31,450 INFO L225 Difference]: With dead ends: 8114 [2021-10-07 14:57:31,450 INFO L226 Difference]: Without dead ends: 8006 [2021-10-07 14:57:31,450 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 354.1ms TimeCoverageRelationStatistics Valid=317, Invalid=873, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 14:57:31,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8006 states. [2021-10-07 14:57:31,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8006 to 4004. [2021-10-07 14:57:31,558 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) [2021-10-07 14:57:31,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4004 states to 4004 states and 13625 transitions. [2021-10-07 14:57:31,570 INFO L78 Accepts]: Start accepts. Automaton has 4004 states and 13625 transitions. Word has length 28 [2021-10-07 14:57:31,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:31,570 INFO L470 AbstractCegarLoop]: Abstraction has 4004 states and 13625 transitions. [2021-10-07 14:57:31,570 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) [2021-10-07 14:57:31,570 INFO L276 IsEmpty]: Start isEmpty. Operand 4004 states and 13625 transitions. [2021-10-07 14:57:31,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:31,578 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:31,578 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] [2021-10-07 14:57:31,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-10-07 14:57:31,579 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:31,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:31,579 INFO L82 PathProgramCache]: Analyzing trace with hash 693718739, now seen corresponding path program 11 times [2021-10-07 14:57:31,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:31,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384485617] [2021-10-07 14:57:31,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:31,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:31,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:31,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:31,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384485617] [2021-10-07 14:57:31,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384485617] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:31,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:31,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-07 14:57:31,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857791776] [2021-10-07 14:57:31,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 14:57:31,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:31,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 14:57:31,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-07 14:57:31,743 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) [2021-10-07 14:57:32,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:32,691 INFO L93 Difference]: Finished difference Result 6102 states and 21363 transitions. [2021-10-07 14:57:32,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 14:57:32,692 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 [2021-10-07 14:57:32,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:32,710 INFO L225 Difference]: With dead ends: 6102 [2021-10-07 14:57:32,710 INFO L226 Difference]: Without dead ends: 6086 [2021-10-07 14:57:32,711 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 388.4ms TimeCoverageRelationStatistics Valid=347, Invalid=1059, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 14:57:32,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6086 states. [2021-10-07 14:57:32,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6086 to 4196. [2021-10-07 14:57:32,807 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) [2021-10-07 14:57:32,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4196 states to 4196 states and 14257 transitions. [2021-10-07 14:57:32,820 INFO L78 Accepts]: Start accepts. Automaton has 4196 states and 14257 transitions. Word has length 28 [2021-10-07 14:57:32,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:32,821 INFO L470 AbstractCegarLoop]: Abstraction has 4196 states and 14257 transitions. [2021-10-07 14:57:32,821 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) [2021-10-07 14:57:32,821 INFO L276 IsEmpty]: Start isEmpty. Operand 4196 states and 14257 transitions. [2021-10-07 14:57:32,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:32,829 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:32,829 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] [2021-10-07 14:57:32,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-10-07 14:57:32,830 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:32,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:32,831 INFO L82 PathProgramCache]: Analyzing trace with hash 689737677, now seen corresponding path program 23 times [2021-10-07 14:57:32,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:32,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420793814] [2021-10-07 14:57:32,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:32,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:32,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:32,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:32,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420793814] [2021-10-07 14:57:32,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420793814] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:32,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:32,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-07 14:57:32,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882727417] [2021-10-07 14:57:32,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 14:57:32,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:32,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 14:57:32,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-07 14:57:32,991 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) [2021-10-07 14:57:33,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:33,988 INFO L93 Difference]: Finished difference Result 6158 states and 21528 transitions. [2021-10-07 14:57:33,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 14:57:33,988 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 [2021-10-07 14:57:33,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:34,006 INFO L225 Difference]: With dead ends: 6158 [2021-10-07 14:57:34,006 INFO L226 Difference]: Without dead ends: 6086 [2021-10-07 14:57:34,007 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 415.0ms TimeCoverageRelationStatistics Valid=347, Invalid=1059, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 14:57:34,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6086 states. [2021-10-07 14:57:34,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6086 to 4148. [2021-10-07 14:57:34,099 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) [2021-10-07 14:57:34,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 14111 transitions. [2021-10-07 14:57:34,112 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 14111 transitions. Word has length 28 [2021-10-07 14:57:34,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:34,113 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 14111 transitions. [2021-10-07 14:57:34,113 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) [2021-10-07 14:57:34,113 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 14111 transitions. [2021-10-07 14:57:34,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:34,122 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:34,122 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] [2021-10-07 14:57:34,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-10-07 14:57:34,123 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:34,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:34,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1018552621, now seen corresponding path program 12 times [2021-10-07 14:57:34,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:34,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738421881] [2021-10-07 14:57:34,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:34,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:34,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:34,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:34,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738421881] [2021-10-07 14:57:34,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738421881] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:34,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:34,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-07 14:57:34,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041532637] [2021-10-07 14:57:34,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 14:57:34,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:34,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 14:57:34,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-07 14:57:34,290 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) [2021-10-07 14:57:35,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:35,355 INFO L93 Difference]: Finished difference Result 6070 states and 21243 transitions. [2021-10-07 14:57:35,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 14:57:35,355 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 [2021-10-07 14:57:35,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:35,374 INFO L225 Difference]: With dead ends: 6070 [2021-10-07 14:57:35,375 INFO L226 Difference]: Without dead ends: 6054 [2021-10-07 14:57:35,375 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 415.8ms TimeCoverageRelationStatistics Valid=347, Invalid=1059, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 14:57:35,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6054 states. [2021-10-07 14:57:35,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6054 to 4196. [2021-10-07 14:57:35,473 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) [2021-10-07 14:57:35,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4196 states to 4196 states and 14233 transitions. [2021-10-07 14:57:35,487 INFO L78 Accepts]: Start accepts. Automaton has 4196 states and 14233 transitions. Word has length 28 [2021-10-07 14:57:35,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:35,487 INFO L470 AbstractCegarLoop]: Abstraction has 4196 states and 14233 transitions. [2021-10-07 14:57:35,488 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) [2021-10-07 14:57:35,488 INFO L276 IsEmpty]: Start isEmpty. Operand 4196 states and 14233 transitions. [2021-10-07 14:57:35,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:35,496 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:35,496 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] [2021-10-07 14:57:35,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-10-07 14:57:35,497 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:35,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:35,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1024317282, now seen corresponding path program 5 times [2021-10-07 14:57:35,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:35,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098444465] [2021-10-07 14:57:35,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:35,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:35,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:35,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:35,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098444465] [2021-10-07 14:57:35,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098444465] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:35,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:35,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-07 14:57:35,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152674369] [2021-10-07 14:57:35,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 14:57:35,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:35,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 14:57:35,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-07 14:57:35,654 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) [2021-10-07 14:57:36,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:36,685 INFO L93 Difference]: Finished difference Result 6094 states and 21326 transitions. [2021-10-07 14:57:36,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 14:57:36,686 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 [2021-10-07 14:57:36,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:36,705 INFO L225 Difference]: With dead ends: 6094 [2021-10-07 14:57:36,705 INFO L226 Difference]: Without dead ends: 6028 [2021-10-07 14:57:36,705 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 405.0ms TimeCoverageRelationStatistics Valid=347, Invalid=1059, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 14:57:36,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6028 states. [2021-10-07 14:57:36,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6028 to 4148. [2021-10-07 14:57:36,803 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) [2021-10-07 14:57:36,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 14087 transitions. [2021-10-07 14:57:36,816 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 14087 transitions. Word has length 28 [2021-10-07 14:57:36,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:36,816 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 14087 transitions. [2021-10-07 14:57:36,816 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) [2021-10-07 14:57:36,816 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 14087 transitions. [2021-10-07 14:57:36,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:36,825 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:36,825 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] [2021-10-07 14:57:36,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-10-07 14:57:36,825 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:36,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:36,826 INFO L82 PathProgramCache]: Analyzing trace with hash -555136697, now seen corresponding path program 24 times [2021-10-07 14:57:36,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:36,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750081353] [2021-10-07 14:57:36,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:36,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:36,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:36,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:36,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750081353] [2021-10-07 14:57:36,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750081353] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:36,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:36,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-07 14:57:36,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31352250] [2021-10-07 14:57:36,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 14:57:36,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:36,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 14:57:36,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-07 14:57:36,987 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) [2021-10-07 14:57:38,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:38,017 INFO L93 Difference]: Finished difference Result 6134 states and 21402 transitions. [2021-10-07 14:57:38,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 14:57:38,018 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 [2021-10-07 14:57:38,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:38,037 INFO L225 Difference]: With dead ends: 6134 [2021-10-07 14:57:38,038 INFO L226 Difference]: Without dead ends: 6104 [2021-10-07 14:57:38,039 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 414.2ms TimeCoverageRelationStatistics Valid=347, Invalid=1059, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 14:57:38,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6104 states. [2021-10-07 14:57:38,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6104 to 4202. [2021-10-07 14:57:38,147 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) [2021-10-07 14:57:38,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4202 states to 4202 states and 14225 transitions. [2021-10-07 14:57:38,161 INFO L78 Accepts]: Start accepts. Automaton has 4202 states and 14225 transitions. Word has length 28 [2021-10-07 14:57:38,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:38,162 INFO L470 AbstractCegarLoop]: Abstraction has 4202 states and 14225 transitions. [2021-10-07 14:57:38,162 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) [2021-10-07 14:57:38,162 INFO L276 IsEmpty]: Start isEmpty. Operand 4202 states and 14225 transitions. [2021-10-07 14:57:38,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:38,171 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:38,171 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] [2021-10-07 14:57:38,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-10-07 14:57:38,171 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:38,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:38,172 INFO L82 PathProgramCache]: Analyzing trace with hash -555194216, now seen corresponding path program 6 times [2021-10-07 14:57:38,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:38,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020889840] [2021-10-07 14:57:38,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:38,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:38,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:38,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:38,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020889840] [2021-10-07 14:57:38,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020889840] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:38,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:38,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-07 14:57:38,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496510138] [2021-10-07 14:57:38,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 14:57:38,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:38,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 14:57:38,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-07 14:57:38,316 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) [2021-10-07 14:57:39,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:39,320 INFO L93 Difference]: Finished difference Result 6090 states and 21279 transitions. [2021-10-07 14:57:39,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 14:57:39,321 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 [2021-10-07 14:57:39,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:39,342 INFO L225 Difference]: With dead ends: 6090 [2021-10-07 14:57:39,342 INFO L226 Difference]: Without dead ends: 5748 [2021-10-07 14:57:39,342 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 405.3ms TimeCoverageRelationStatistics Valid=347, Invalid=1059, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 14:57:39,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5748 states. [2021-10-07 14:57:39,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5748 to 3980. [2021-10-07 14:57:39,442 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) [2021-10-07 14:57:39,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3980 states to 3980 states and 13489 transitions. [2021-10-07 14:57:39,455 INFO L78 Accepts]: Start accepts. Automaton has 3980 states and 13489 transitions. Word has length 28 [2021-10-07 14:57:39,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:39,456 INFO L470 AbstractCegarLoop]: Abstraction has 3980 states and 13489 transitions. [2021-10-07 14:57:39,456 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) [2021-10-07 14:57:39,456 INFO L276 IsEmpty]: Start isEmpty. Operand 3980 states and 13489 transitions. [2021-10-07 14:57:39,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:39,464 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:39,465 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] [2021-10-07 14:57:39,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-10-07 14:57:39,465 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:39,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:39,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1116923667, now seen corresponding path program 13 times [2021-10-07 14:57:39,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:39,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774230783] [2021-10-07 14:57:39,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:39,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:39,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:39,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:39,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774230783] [2021-10-07 14:57:39,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774230783] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:39,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:39,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-07 14:57:39,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667753491] [2021-10-07 14:57:39,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 14:57:39,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:39,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 14:57:39,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:57:39,594 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) [2021-10-07 14:57:40,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:40,585 INFO L93 Difference]: Finished difference Result 5482 states and 19143 transitions. [2021-10-07 14:57:40,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 14:57:40,586 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 [2021-10-07 14:57:40,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:40,605 INFO L225 Difference]: With dead ends: 5482 [2021-10-07 14:57:40,605 INFO L226 Difference]: Without dead ends: 5450 [2021-10-07 14:57:40,606 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 371.1ms TimeCoverageRelationStatistics Valid=354, Invalid=1052, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 14:57:40,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5450 states. [2021-10-07 14:57:40,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5450 to 4014. [2021-10-07 14:57:40,701 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) [2021-10-07 14:57:40,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4014 states to 4014 states and 13560 transitions. [2021-10-07 14:57:40,715 INFO L78 Accepts]: Start accepts. Automaton has 4014 states and 13560 transitions. Word has length 28 [2021-10-07 14:57:40,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:40,715 INFO L470 AbstractCegarLoop]: Abstraction has 4014 states and 13560 transitions. [2021-10-07 14:57:40,715 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) [2021-10-07 14:57:40,715 INFO L276 IsEmpty]: Start isEmpty. Operand 4014 states and 13560 transitions. [2021-10-07 14:57:40,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:40,723 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:40,723 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] [2021-10-07 14:57:40,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-10-07 14:57:40,724 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:40,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:40,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1112942605, now seen corresponding path program 25 times [2021-10-07 14:57:40,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:40,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883186320] [2021-10-07 14:57:40,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:40,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:40,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:40,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:40,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883186320] [2021-10-07 14:57:40,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883186320] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:40,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:40,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-07 14:57:40,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662094793] [2021-10-07 14:57:40,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 14:57:40,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:40,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 14:57:40,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:57:40,863 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) [2021-10-07 14:57:41,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:41,839 INFO L93 Difference]: Finished difference Result 5554 states and 19353 transitions. [2021-10-07 14:57:41,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 14:57:41,841 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 [2021-10-07 14:57:41,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:41,864 INFO L225 Difference]: With dead ends: 5554 [2021-10-07 14:57:41,864 INFO L226 Difference]: Without dead ends: 5442 [2021-10-07 14:57:41,865 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 396.4ms TimeCoverageRelationStatistics Valid=354, Invalid=1052, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 14:57:41,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5442 states. [2021-10-07 14:57:41,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5442 to 3934. [2021-10-07 14:57:41,954 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) [2021-10-07 14:57:41,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3934 states to 3934 states and 13308 transitions. [2021-10-07 14:57:41,966 INFO L78 Accepts]: Start accepts. Automaton has 3934 states and 13308 transitions. Word has length 28 [2021-10-07 14:57:41,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:41,967 INFO L470 AbstractCegarLoop]: Abstraction has 3934 states and 13308 transitions. [2021-10-07 14:57:41,967 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) [2021-10-07 14:57:41,967 INFO L276 IsEmpty]: Start isEmpty. Operand 3934 states and 13308 transitions. [2021-10-07 14:57:41,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:41,974 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:41,975 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] [2021-10-07 14:57:41,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-10-07 14:57:41,975 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:41,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:41,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1955741087, now seen corresponding path program 14 times [2021-10-07 14:57:41,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:41,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161103164] [2021-10-07 14:57:41,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:41,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:42,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:42,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:42,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161103164] [2021-10-07 14:57:42,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161103164] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:42,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:42,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-07 14:57:42,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12483187] [2021-10-07 14:57:42,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 14:57:42,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:42,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 14:57:42,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:57:42,122 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) [2021-10-07 14:57:43,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:43,109 INFO L93 Difference]: Finished difference Result 5392 states and 18857 transitions. [2021-10-07 14:57:43,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 14:57:43,109 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 [2021-10-07 14:57:43,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:43,127 INFO L225 Difference]: With dead ends: 5392 [2021-10-07 14:57:43,128 INFO L226 Difference]: Without dead ends: 5372 [2021-10-07 14:57:43,128 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 397.0ms TimeCoverageRelationStatistics Valid=342, Invalid=990, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 14:57:43,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2021-10-07 14:57:43,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 3984. [2021-10-07 14:57:43,285 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) [2021-10-07 14:57:43,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3984 states to 3984 states and 13418 transitions. [2021-10-07 14:57:43,298 INFO L78 Accepts]: Start accepts. Automaton has 3984 states and 13418 transitions. Word has length 28 [2021-10-07 14:57:43,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:43,299 INFO L470 AbstractCegarLoop]: Abstraction has 3984 states and 13418 transitions. [2021-10-07 14:57:43,299 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) [2021-10-07 14:57:43,299 INFO L276 IsEmpty]: Start isEmpty. Operand 3984 states and 13418 transitions. [2021-10-07 14:57:43,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:43,307 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:43,307 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] [2021-10-07 14:57:43,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-10-07 14:57:43,307 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:43,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:43,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1952602794, now seen corresponding path program 7 times [2021-10-07 14:57:43,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:43,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621134416] [2021-10-07 14:57:43,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:43,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:43,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:43,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:43,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621134416] [2021-10-07 14:57:43,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621134416] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:43,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:43,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-07 14:57:43,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115504038] [2021-10-07 14:57:43,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 14:57:43,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:43,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 14:57:43,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:57:43,438 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) [2021-10-07 14:57:44,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:44,402 INFO L93 Difference]: Finished difference Result 5544 states and 19247 transitions. [2021-10-07 14:57:44,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 14:57:44,403 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 [2021-10-07 14:57:44,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:44,419 INFO L225 Difference]: With dead ends: 5544 [2021-10-07 14:57:44,419 INFO L226 Difference]: Without dead ends: 5364 [2021-10-07 14:57:44,420 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 [2021-10-07 14:57:44,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5364 states. [2021-10-07 14:57:44,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5364 to 3848. [2021-10-07 14:57:44,505 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) [2021-10-07 14:57:44,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3848 states to 3848 states and 12984 transitions. [2021-10-07 14:57:44,517 INFO L78 Accepts]: Start accepts. Automaton has 3848 states and 12984 transitions. Word has length 28 [2021-10-07 14:57:44,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:44,518 INFO L470 AbstractCegarLoop]: Abstraction has 3848 states and 12984 transitions. [2021-10-07 14:57:44,518 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) [2021-10-07 14:57:44,518 INFO L276 IsEmpty]: Start isEmpty. Operand 3848 states and 12984 transitions. [2021-10-07 14:57:44,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:44,526 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:44,526 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] [2021-10-07 14:57:44,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-10-07 14:57:44,526 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:44,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:44,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1873241436, now seen corresponding path program 8 times [2021-10-07 14:57:44,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:44,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85462490] [2021-10-07 14:57:44,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:44,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:44,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:44,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:44,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85462490] [2021-10-07 14:57:44,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85462490] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:44,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:44,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-07 14:57:44,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307752339] [2021-10-07 14:57:44,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 14:57:44,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:44,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 14:57:44,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:57:44,642 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) [2021-10-07 14:57:45,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:45,513 INFO L93 Difference]: Finished difference Result 5448 states and 18919 transitions. [2021-10-07 14:57:45,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 14:57:45,513 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 [2021-10-07 14:57:45,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:45,529 INFO L225 Difference]: With dead ends: 5448 [2021-10-07 14:57:45,529 INFO L226 Difference]: Without dead ends: 5208 [2021-10-07 14:57:45,530 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 332.6ms TimeCoverageRelationStatistics Valid=342, Invalid=990, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 14:57:45,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5208 states. [2021-10-07 14:57:45,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5208 to 3822. [2021-10-07 14:57:45,615 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) [2021-10-07 14:57:45,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3822 states to 3822 states and 12858 transitions. [2021-10-07 14:57:45,629 INFO L78 Accepts]: Start accepts. Automaton has 3822 states and 12858 transitions. Word has length 28 [2021-10-07 14:57:45,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:45,629 INFO L470 AbstractCegarLoop]: Abstraction has 3822 states and 12858 transitions. [2021-10-07 14:57:45,630 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) [2021-10-07 14:57:45,630 INFO L276 IsEmpty]: Start isEmpty. Operand 3822 states and 12858 transitions. [2021-10-07 14:57:45,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:45,638 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:45,638 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] [2021-10-07 14:57:45,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-10-07 14:57:45,638 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:45,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:45,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1873268595, now seen corresponding path program 26 times [2021-10-07 14:57:45,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:45,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513369052] [2021-10-07 14:57:45,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:45,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:45,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:45,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:45,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513369052] [2021-10-07 14:57:45,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513369052] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:45,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:45,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-07 14:57:45,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79537149] [2021-10-07 14:57:45,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 14:57:45,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:45,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 14:57:45,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:57:45,771 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) [2021-10-07 14:57:46,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:46,744 INFO L93 Difference]: Finished difference Result 5224 states and 18205 transitions. [2021-10-07 14:57:46,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 14:57:46,745 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 [2021-10-07 14:57:46,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:46,760 INFO L225 Difference]: With dead ends: 5224 [2021-10-07 14:57:46,760 INFO L226 Difference]: Without dead ends: 4440 [2021-10-07 14:57:46,760 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 369.7ms TimeCoverageRelationStatistics Valid=342, Invalid=990, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 14:57:46,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4440 states. [2021-10-07 14:57:46,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4440 to 3254. [2021-10-07 14:57:46,832 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) [2021-10-07 14:57:46,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3254 states to 3254 states and 10964 transitions. [2021-10-07 14:57:46,843 INFO L78 Accepts]: Start accepts. Automaton has 3254 states and 10964 transitions. Word has length 28 [2021-10-07 14:57:46,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:46,843 INFO L470 AbstractCegarLoop]: Abstraction has 3254 states and 10964 transitions. [2021-10-07 14:57:46,843 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) [2021-10-07 14:57:46,843 INFO L276 IsEmpty]: Start isEmpty. Operand 3254 states and 10964 transitions. [2021-10-07 14:57:46,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:46,850 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:46,850 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, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:57:46,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-10-07 14:57:46,850 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:46,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:46,850 INFO L82 PathProgramCache]: Analyzing trace with hash 865853587, now seen corresponding path program 15 times [2021-10-07 14:57:46,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:46,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716963618] [2021-10-07 14:57:46,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:46,851 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:46,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:46,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:46,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716963618] [2021-10-07 14:57:46,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716963618] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:46,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:46,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-07 14:57:46,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128415232] [2021-10-07 14:57:46,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 14:57:46,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:46,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 14:57:46,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-10-07 14:57:46,986 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) [2021-10-07 14:57:47,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:47,988 INFO L93 Difference]: Finished difference Result 4834 states and 16774 transitions. [2021-10-07 14:57:47,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-07 14:57:47,990 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 [2021-10-07 14:57:47,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:48,006 INFO L225 Difference]: With dead ends: 4834 [2021-10-07 14:57:48,006 INFO L226 Difference]: Without dead ends: 4802 [2021-10-07 14:57:48,007 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 413.0ms TimeCoverageRelationStatistics Valid=432, Invalid=1374, Unknown=0, NotChecked=0, Total=1806 [2021-10-07 14:57:48,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4802 states. [2021-10-07 14:57:48,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4802 to 3232. [2021-10-07 14:57:48,081 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) [2021-10-07 14:57:48,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3232 states to 3232 states and 10903 transitions. [2021-10-07 14:57:48,092 INFO L78 Accepts]: Start accepts. Automaton has 3232 states and 10903 transitions. Word has length 28 [2021-10-07 14:57:48,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:48,092 INFO L470 AbstractCegarLoop]: Abstraction has 3232 states and 10903 transitions. [2021-10-07 14:57:48,092 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) [2021-10-07 14:57:48,093 INFO L276 IsEmpty]: Start isEmpty. Operand 3232 states and 10903 transitions. [2021-10-07 14:57:48,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:48,099 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:48,099 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] [2021-10-07 14:57:48,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-10-07 14:57:48,099 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:48,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:48,100 INFO L82 PathProgramCache]: Analyzing trace with hash 861872525, now seen corresponding path program 27 times [2021-10-07 14:57:48,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:48,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267857053] [2021-10-07 14:57:48,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:48,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:48,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:48,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:48,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267857053] [2021-10-07 14:57:48,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267857053] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:48,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:48,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-07 14:57:48,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533157294] [2021-10-07 14:57:48,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 14:57:48,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:48,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 14:57:48,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-10-07 14:57:48,234 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) [2021-10-07 14:57:49,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:49,305 INFO L93 Difference]: Finished difference Result 4850 states and 16814 transitions. [2021-10-07 14:57:49,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-07 14:57:49,305 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 [2021-10-07 14:57:49,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:49,320 INFO L225 Difference]: With dead ends: 4850 [2021-10-07 14:57:49,320 INFO L226 Difference]: Without dead ends: 4674 [2021-10-07 14:57:49,320 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 415.5ms TimeCoverageRelationStatistics Valid=432, Invalid=1374, Unknown=0, NotChecked=0, Total=1806 [2021-10-07 14:57:49,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4674 states. [2021-10-07 14:57:49,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4674 to 3144. [2021-10-07 14:57:49,391 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) [2021-10-07 14:57:49,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3144 states to 3144 states and 10633 transitions. [2021-10-07 14:57:49,400 INFO L78 Accepts]: Start accepts. Automaton has 3144 states and 10633 transitions. Word has length 28 [2021-10-07 14:57:49,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:49,400 INFO L470 AbstractCegarLoop]: Abstraction has 3144 states and 10633 transitions. [2021-10-07 14:57:49,400 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) [2021-10-07 14:57:49,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3144 states and 10633 transitions. [2021-10-07 14:57:49,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:49,406 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:49,407 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] [2021-10-07 14:57:49,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-10-07 14:57:49,407 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:49,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:49,407 INFO L82 PathProgramCache]: Analyzing trace with hash -846417773, now seen corresponding path program 16 times [2021-10-07 14:57:49,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:49,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062598717] [2021-10-07 14:57:49,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:49,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:49,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:49,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:49,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062598717] [2021-10-07 14:57:49,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062598717] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:49,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:49,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-07 14:57:49,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725849233] [2021-10-07 14:57:49,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 14:57:49,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:49,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 14:57:49,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-10-07 14:57:49,544 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) [2021-10-07 14:57:50,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:50,500 INFO L93 Difference]: Finished difference Result 4678 states and 16228 transitions. [2021-10-07 14:57:50,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 14:57:50,500 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 [2021-10-07 14:57:50,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:50,515 INFO L225 Difference]: With dead ends: 4678 [2021-10-07 14:57:50,515 INFO L226 Difference]: Without dead ends: 4658 [2021-10-07 14:57:50,516 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 378.3ms TimeCoverageRelationStatistics Valid=381, Invalid=1101, Unknown=0, NotChecked=0, Total=1482 [2021-10-07 14:57:50,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2021-10-07 14:57:50,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 3184. [2021-10-07 14:57:50,591 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) [2021-10-07 14:57:50,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 10723 transitions. [2021-10-07 14:57:50,601 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 10723 transitions. Word has length 28 [2021-10-07 14:57:50,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:50,601 INFO L470 AbstractCegarLoop]: Abstraction has 3184 states and 10723 transitions. [2021-10-07 14:57:50,601 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) [2021-10-07 14:57:50,601 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 10723 transitions. [2021-10-07 14:57:50,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:50,608 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:50,608 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] [2021-10-07 14:57:50,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-10-07 14:57:50,608 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:50,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:50,608 INFO L82 PathProgramCache]: Analyzing trace with hash -852182434, now seen corresponding path program 7 times [2021-10-07 14:57:50,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:50,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811889525] [2021-10-07 14:57:50,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:50,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:50,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:50,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:50,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811889525] [2021-10-07 14:57:50,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811889525] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:50,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:50,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-07 14:57:50,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144908938] [2021-10-07 14:57:50,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 14:57:50,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:50,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 14:57:50,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-10-07 14:57:50,745 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) [2021-10-07 14:57:51,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:51,860 INFO L93 Difference]: Finished difference Result 4810 states and 16574 transitions. [2021-10-07 14:57:51,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-07 14:57:51,861 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 [2021-10-07 14:57:51,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:51,874 INFO L225 Difference]: With dead ends: 4810 [2021-10-07 14:57:51,874 INFO L226 Difference]: Without dead ends: 4606 [2021-10-07 14:57:51,875 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 467.8ms TimeCoverageRelationStatistics Valid=532, Invalid=1724, Unknown=0, NotChecked=0, Total=2256 [2021-10-07 14:57:51,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4606 states. [2021-10-07 14:57:51,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4606 to 3068. [2021-10-07 14:57:51,942 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) [2021-10-07 14:57:51,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 10355 transitions. [2021-10-07 14:57:51,952 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 10355 transitions. Word has length 28 [2021-10-07 14:57:51,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:51,952 INFO L470 AbstractCegarLoop]: Abstraction has 3068 states and 10355 transitions. [2021-10-07 14:57:51,952 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) [2021-10-07 14:57:51,952 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 10355 transitions. [2021-10-07 14:57:51,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:51,957 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:51,958 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] [2021-10-07 14:57:51,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-10-07 14:57:51,958 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:51,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:51,959 INFO L82 PathProgramCache]: Analyzing trace with hash -383001849, now seen corresponding path program 28 times [2021-10-07 14:57:51,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:51,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100511797] [2021-10-07 14:57:51,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:51,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:52,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:52,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:52,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100511797] [2021-10-07 14:57:52,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100511797] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:52,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:52,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-07 14:57:52,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672495406] [2021-10-07 14:57:52,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 14:57:52,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:52,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 14:57:52,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-10-07 14:57:52,110 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) [2021-10-07 14:57:53,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:53,025 INFO L93 Difference]: Finished difference Result 4590 states and 15834 transitions. [2021-10-07 14:57:53,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 14:57:53,025 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 [2021-10-07 14:57:53,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:53,039 INFO L225 Difference]: With dead ends: 4590 [2021-10-07 14:57:53,039 INFO L226 Difference]: Without dead ends: 4550 [2021-10-07 14:57:53,040 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 385.6ms TimeCoverageRelationStatistics Valid=381, Invalid=1101, Unknown=0, NotChecked=0, Total=1482 [2021-10-07 14:57:53,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4550 states. [2021-10-07 14:57:53,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4550 to 3132. [2021-10-07 14:57:53,115 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) [2021-10-07 14:57:53,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 10515 transitions. [2021-10-07 14:57:53,125 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 10515 transitions. Word has length 28 [2021-10-07 14:57:53,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:53,125 INFO L470 AbstractCegarLoop]: Abstraction has 3132 states and 10515 transitions. [2021-10-07 14:57:53,125 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) [2021-10-07 14:57:53,125 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 10515 transitions. [2021-10-07 14:57:53,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:53,131 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:53,131 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] [2021-10-07 14:57:53,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-10-07 14:57:53,132 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:53,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:53,132 INFO L82 PathProgramCache]: Analyzing trace with hash -383059368, now seen corresponding path program 8 times [2021-10-07 14:57:53,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:53,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914189098] [2021-10-07 14:57:53,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:53,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:53,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:53,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:53,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914189098] [2021-10-07 14:57:53,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914189098] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:53,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:53,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-07 14:57:53,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250862304] [2021-10-07 14:57:53,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 14:57:53,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:53,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 14:57:53,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-10-07 14:57:53,267 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) [2021-10-07 14:57:54,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:54,274 INFO L93 Difference]: Finished difference Result 4638 states and 15956 transitions. [2021-10-07 14:57:54,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-07 14:57:54,275 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 [2021-10-07 14:57:54,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:54,285 INFO L225 Difference]: With dead ends: 4638 [2021-10-07 14:57:54,286 INFO L226 Difference]: Without dead ends: 3692 [2021-10-07 14:57:54,286 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 422.8ms TimeCoverageRelationStatistics Valid=470, Invalid=1422, Unknown=0, NotChecked=0, Total=1892 [2021-10-07 14:57:54,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3692 states. [2021-10-07 14:57:54,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3692 to 2650. [2021-10-07 14:57:54,341 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) [2021-10-07 14:57:54,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 8897 transitions. [2021-10-07 14:57:54,348 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 8897 transitions. Word has length 28 [2021-10-07 14:57:54,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:54,348 INFO L470 AbstractCegarLoop]: Abstraction has 2650 states and 8897 transitions. [2021-10-07 14:57:54,349 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) [2021-10-07 14:57:54,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 8897 transitions. [2021-10-07 14:57:54,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:54,353 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:54,353 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] [2021-10-07 14:57:54,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-10-07 14:57:54,353 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:54,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:54,354 INFO L82 PathProgramCache]: Analyzing trace with hash 324627679, now seen corresponding path program 17 times [2021-10-07 14:57:54,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:54,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376609619] [2021-10-07 14:57:54,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:54,354 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:54,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:54,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:54,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376609619] [2021-10-07 14:57:54,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376609619] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:54,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:54,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-07 14:57:54,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405153337] [2021-10-07 14:57:54,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 14:57:54,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:54,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 14:57:54,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:57:54,491 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) [2021-10-07 14:57:55,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:55,102 INFO L93 Difference]: Finished difference Result 3630 states and 12617 transitions. [2021-10-07 14:57:55,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 14:57:55,103 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 [2021-10-07 14:57:55,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:55,117 INFO L225 Difference]: With dead ends: 3630 [2021-10-07 14:57:55,117 INFO L226 Difference]: Without dead ends: 3610 [2021-10-07 14:57:55,118 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 249.8ms TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2021-10-07 14:57:55,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3610 states. [2021-10-07 14:57:55,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3610 to 2640. [2021-10-07 14:57:55,185 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) [2021-10-07 14:57:55,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2640 states to 2640 states and 8864 transitions. [2021-10-07 14:57:55,195 INFO L78 Accepts]: Start accepts. Automaton has 2640 states and 8864 transitions. Word has length 28 [2021-10-07 14:57:55,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:55,195 INFO L470 AbstractCegarLoop]: Abstraction has 2640 states and 8864 transitions. [2021-10-07 14:57:55,195 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) [2021-10-07 14:57:55,195 INFO L276 IsEmpty]: Start isEmpty. Operand 2640 states and 8864 transitions. [2021-10-07 14:57:55,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:55,201 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:55,201 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] [2021-10-07 14:57:55,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-10-07 14:57:55,201 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:55,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:55,202 INFO L82 PathProgramCache]: Analyzing trace with hash 321489386, now seen corresponding path program 9 times [2021-10-07 14:57:55,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:55,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89376295] [2021-10-07 14:57:55,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:55,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:55,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:55,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:55,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89376295] [2021-10-07 14:57:55,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89376295] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:55,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:55,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-07 14:57:55,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511280342] [2021-10-07 14:57:55,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 14:57:55,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:55,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 14:57:55,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:57:55,331 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) [2021-10-07 14:57:56,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:56,077 INFO L93 Difference]: Finished difference Result 3716 states and 12817 transitions. [2021-10-07 14:57:56,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 14:57:56,077 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 [2021-10-07 14:57:56,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:56,088 INFO L225 Difference]: With dead ends: 3716 [2021-10-07 14:57:56,089 INFO L226 Difference]: Without dead ends: 3572 [2021-10-07 14:57:56,089 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 302.9ms TimeCoverageRelationStatistics Valid=276, Invalid=780, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 14:57:56,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2021-10-07 14:57:56,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 2530. [2021-10-07 14:57:56,141 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) [2021-10-07 14:57:56,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 8532 transitions. [2021-10-07 14:57:56,149 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 8532 transitions. Word has length 28 [2021-10-07 14:57:56,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:56,149 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 8532 transitions. [2021-10-07 14:57:56,150 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) [2021-10-07 14:57:56,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 8532 transitions. [2021-10-07 14:57:56,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:56,155 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:56,155 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] [2021-10-07 14:57:56,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-10-07 14:57:56,155 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:56,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:56,156 INFO L82 PathProgramCache]: Analyzing trace with hash 2098238495, now seen corresponding path program 18 times [2021-10-07 14:57:56,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:56,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076229099] [2021-10-07 14:57:56,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:56,156 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:56,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:56,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:56,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076229099] [2021-10-07 14:57:56,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076229099] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:56,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:56,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-07 14:57:56,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100326959] [2021-10-07 14:57:56,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 14:57:56,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:56,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 14:57:56,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:57:56,286 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) [2021-10-07 14:57:56,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:56,887 INFO L93 Difference]: Finished difference Result 3498 states and 12236 transitions. [2021-10-07 14:57:56,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 14:57:56,887 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 [2021-10-07 14:57:56,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:56,897 INFO L225 Difference]: With dead ends: 3498 [2021-10-07 14:57:56,897 INFO L226 Difference]: Without dead ends: 3478 [2021-10-07 14:57:56,898 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 231.7ms TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2021-10-07 14:57:56,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3478 states. [2021-10-07 14:57:56,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3478 to 2508. [2021-10-07 14:57:56,949 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) [2021-10-07 14:57:56,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2508 states to 2508 states and 8483 transitions. [2021-10-07 14:57:56,957 INFO L78 Accepts]: Start accepts. Automaton has 2508 states and 8483 transitions. Word has length 28 [2021-10-07 14:57:56,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:56,957 INFO L470 AbstractCegarLoop]: Abstraction has 2508 states and 8483 transitions. [2021-10-07 14:57:56,957 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) [2021-10-07 14:57:56,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2508 states and 8483 transitions. [2021-10-07 14:57:56,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:56,962 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:56,962 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, 1, 1, 1, 1, 1, 1] [2021-10-07 14:57:56,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-10-07 14:57:56,962 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:56,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:56,962 INFO L82 PathProgramCache]: Analyzing trace with hash 2092473834, now seen corresponding path program 9 times [2021-10-07 14:57:56,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:56,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446367468] [2021-10-07 14:57:56,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:56,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:57,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:57,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:57,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446367468] [2021-10-07 14:57:57,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446367468] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:57,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:57,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-07 14:57:57,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604410372] [2021-10-07 14:57:57,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 14:57:57,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:57,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 14:57:57,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:57:57,102 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) [2021-10-07 14:57:57,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:57,885 INFO L93 Difference]: Finished difference Result 3566 states and 12406 transitions. [2021-10-07 14:57:57,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 14:57:57,886 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 [2021-10-07 14:57:57,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:57,897 INFO L225 Difference]: With dead ends: 3566 [2021-10-07 14:57:57,897 INFO L226 Difference]: Without dead ends: 3462 [2021-10-07 14:57:57,897 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 323.4ms TimeCoverageRelationStatistics Valid=276, Invalid=780, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 14:57:57,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3462 states. [2021-10-07 14:57:57,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3462 to 2420. [2021-10-07 14:57:57,949 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) [2021-10-07 14:57:57,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 8213 transitions. [2021-10-07 14:57:57,956 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 8213 transitions. Word has length 28 [2021-10-07 14:57:57,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:57,956 INFO L470 AbstractCegarLoop]: Abstraction has 2420 states and 8213 transitions. [2021-10-07 14:57:57,956 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) [2021-10-07 14:57:57,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 8213 transitions. [2021-10-07 14:57:57,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:57,961 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:57,961 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] [2021-10-07 14:57:57,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-10-07 14:57:57,961 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:57,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:57,962 INFO L82 PathProgramCache]: Analyzing trace with hash -923384988, now seen corresponding path program 10 times [2021-10-07 14:57:57,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:57,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537070724] [2021-10-07 14:57:57,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:57,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:58,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:58,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:58,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537070724] [2021-10-07 14:57:58,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537070724] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:58,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:58,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-07 14:57:58,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208731065] [2021-10-07 14:57:58,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 14:57:58,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:58,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 14:57:58,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:57:58,084 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) [2021-10-07 14:57:58,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:58,818 INFO L93 Difference]: Finished difference Result 3530 states and 12250 transitions. [2021-10-07 14:57:58,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 14:57:58,818 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 [2021-10-07 14:57:58,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:58,829 INFO L225 Difference]: With dead ends: 3530 [2021-10-07 14:57:58,829 INFO L226 Difference]: Without dead ends: 3478 [2021-10-07 14:57:58,829 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 295.0ms TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-10-07 14:57:58,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3478 states. [2021-10-07 14:57:58,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3478 to 2492. [2021-10-07 14:57:58,881 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) [2021-10-07 14:57:58,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 8387 transitions. [2021-10-07 14:57:58,888 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 8387 transitions. Word has length 28 [2021-10-07 14:57:58,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:58,888 INFO L470 AbstractCegarLoop]: Abstraction has 2492 states and 8387 transitions. [2021-10-07 14:57:58,889 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) [2021-10-07 14:57:58,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 8387 transitions. [2021-10-07 14:57:58,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:58,893 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:58,893 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] [2021-10-07 14:57:58,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-10-07 14:57:58,894 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:58,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:58,894 INFO L82 PathProgramCache]: Analyzing trace with hash -923469666, now seen corresponding path program 10 times [2021-10-07 14:57:58,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:58,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286283441] [2021-10-07 14:57:58,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:58,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:57:59,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:57:59,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:57:59,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286283441] [2021-10-07 14:57:59,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286283441] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:57:59,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:57:59,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-07 14:57:59,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741499639] [2021-10-07 14:57:59,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 14:57:59,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:57:59,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 14:57:59,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:57:59,023 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) [2021-10-07 14:57:59,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:57:59,857 INFO L93 Difference]: Finished difference Result 3494 states and 12158 transitions. [2021-10-07 14:57:59,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 14:57:59,858 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 [2021-10-07 14:57:59,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:57:59,870 INFO L225 Difference]: With dead ends: 3494 [2021-10-07 14:57:59,870 INFO L226 Difference]: Without dead ends: 2790 [2021-10-07 14:57:59,871 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 306.4ms TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-10-07 14:57:59,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2021-10-07 14:57:59,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 1980. [2021-10-07 14:57:59,927 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) [2021-10-07 14:57:59,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 6555 transitions. [2021-10-07 14:57:59,933 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 6555 transitions. Word has length 28 [2021-10-07 14:57:59,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:57:59,933 INFO L470 AbstractCegarLoop]: Abstraction has 1980 states and 6555 transitions. [2021-10-07 14:57:59,934 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) [2021-10-07 14:57:59,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 6555 transitions. [2021-10-07 14:57:59,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:57:59,937 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:57:59,938 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] [2021-10-07 14:57:59,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-10-07 14:57:59,938 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:57:59,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:57:59,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1012450082, now seen corresponding path program 11 times [2021-10-07 14:57:59,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:57:59,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000589541] [2021-10-07 14:57:59,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:57:59,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:57:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:00,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:00,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:00,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000589541] [2021-10-07 14:58:00,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000589541] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:00,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:58:00,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-07 14:58:00,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695634940] [2021-10-07 14:58:00,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 14:58:00,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:00,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 14:58:00,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:58:00,076 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) [2021-10-07 14:58:00,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:00,643 INFO L93 Difference]: Finished difference Result 2824 states and 9564 transitions. [2021-10-07 14:58:00,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 14:58:00,643 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 [2021-10-07 14:58:00,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:00,651 INFO L225 Difference]: With dead ends: 2824 [2021-10-07 14:58:00,651 INFO L226 Difference]: Without dead ends: 2764 [2021-10-07 14:58:00,651 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 236.5ms TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2021-10-07 14:58:00,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2021-10-07 14:58:00,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 1954. [2021-10-07 14:58:00,690 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) [2021-10-07 14:58:00,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 6463 transitions. [2021-10-07 14:58:00,696 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 6463 transitions. Word has length 28 [2021-10-07 14:58:00,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:00,696 INFO L470 AbstractCegarLoop]: Abstraction has 1954 states and 6463 transitions. [2021-10-07 14:58:00,696 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) [2021-10-07 14:58:00,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 6463 transitions. [2021-10-07 14:58:00,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:58:00,700 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:00,700 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] [2021-10-07 14:58:00,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-10-07 14:58:00,700 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:58:00,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:00,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1012477241, now seen corresponding path program 29 times [2021-10-07 14:58:00,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:00,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463793175] [2021-10-07 14:58:00,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:00,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:00,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:00,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:00,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463793175] [2021-10-07 14:58:00,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463793175] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:00,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:58:00,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-07 14:58:00,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513597781] [2021-10-07 14:58:00,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 14:58:00,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:00,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 14:58:00,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:58:00,826 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) [2021-10-07 14:58:01,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:01,386 INFO L93 Difference]: Finished difference Result 2788 states and 9456 transitions. [2021-10-07 14:58:01,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 14:58:01,386 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 [2021-10-07 14:58:01,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:01,398 INFO L225 Difference]: With dead ends: 2788 [2021-10-07 14:58:01,398 INFO L226 Difference]: Without dead ends: 2560 [2021-10-07 14:58:01,398 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 217.2ms TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2021-10-07 14:58:01,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2021-10-07 14:58:01,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 1750. [2021-10-07 14:58:01,451 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) [2021-10-07 14:58:01,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 5829 transitions. [2021-10-07 14:58:01,459 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 5829 transitions. Word has length 28 [2021-10-07 14:58:01,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:01,460 INFO L470 AbstractCegarLoop]: Abstraction has 1750 states and 5829 transitions. [2021-10-07 14:58:01,460 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) [2021-10-07 14:58:01,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 5829 transitions. [2021-10-07 14:58:01,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:58:01,464 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:01,464 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] [2021-10-07 14:58:01,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-10-07 14:58:01,465 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:58:01,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:01,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1067684642, now seen corresponding path program 12 times [2021-10-07 14:58:01,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:01,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881548376] [2021-10-07 14:58:01,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:01,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:01,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:01,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:01,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881548376] [2021-10-07 14:58:01,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881548376] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:01,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:58:01,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-07 14:58:01,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054738067] [2021-10-07 14:58:01,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 14:58:01,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:01,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 14:58:01,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:58:01,607 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) [2021-10-07 14:58:02,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:02,164 INFO L93 Difference]: Finished difference Result 2552 states and 8769 transitions. [2021-10-07 14:58:02,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 14:58:02,165 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 [2021-10-07 14:58:02,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:02,173 INFO L225 Difference]: With dead ends: 2552 [2021-10-07 14:58:02,173 INFO L226 Difference]: Without dead ends: 2500 [2021-10-07 14:58:02,174 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 236.3ms TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2021-10-07 14:58:02,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2021-10-07 14:58:02,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 1690. [2021-10-07 14:58:02,207 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) [2021-10-07 14:58:02,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 5698 transitions. [2021-10-07 14:58:02,212 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 5698 transitions. Word has length 28 [2021-10-07 14:58:02,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:02,212 INFO L470 AbstractCegarLoop]: Abstraction has 1690 states and 5698 transitions. [2021-10-07 14:58:02,213 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) [2021-10-07 14:58:02,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 5698 transitions. [2021-10-07 14:58:02,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:58:02,216 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:02,216 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] [2021-10-07 14:58:02,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-10-07 14:58:02,216 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:58:02,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:02,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1067769320, now seen corresponding path program 11 times [2021-10-07 14:58:02,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:02,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793393208] [2021-10-07 14:58:02,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:02,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:02,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:02,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:02,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793393208] [2021-10-07 14:58:02,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793393208] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:02,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:58:02,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-07 14:58:02,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632737332] [2021-10-07 14:58:02,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 14:58:02,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:02,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 14:58:02,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:58:02,360 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) [2021-10-07 14:58:02,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:02,949 INFO L93 Difference]: Finished difference Result 2516 states and 8677 transitions. [2021-10-07 14:58:02,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 14:58:02,950 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 [2021-10-07 14:58:02,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:02,960 INFO L225 Difference]: With dead ends: 2516 [2021-10-07 14:58:02,961 INFO L226 Difference]: Without dead ends: 2340 [2021-10-07 14:58:02,961 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 249.2ms TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2021-10-07 14:58:02,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2340 states. [2021-10-07 14:58:03,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2340 to 1530. [2021-10-07 14:58:03,007 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) [2021-10-07 14:58:03,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 5182 transitions. [2021-10-07 14:58:03,014 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 5182 transitions. Word has length 28 [2021-10-07 14:58:03,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:03,015 INFO L470 AbstractCegarLoop]: Abstraction has 1530 states and 5182 transitions. [2021-10-07 14:58:03,015 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) [2021-10-07 14:58:03,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 5182 transitions. [2021-10-07 14:58:03,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:58:03,019 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:03,019 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] [2021-10-07 14:58:03,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-10-07 14:58:03,020 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:58:03,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:03,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1093811321, now seen corresponding path program 30 times [2021-10-07 14:58:03,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:03,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250695814] [2021-10-07 14:58:03,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:03,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:03,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:03,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:03,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250695814] [2021-10-07 14:58:03,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250695814] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:03,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:58:03,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-07 14:58:03,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317379375] [2021-10-07 14:58:03,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 14:58:03,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:03,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 14:58:03,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:58:03,147 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) [2021-10-07 14:58:03,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:03,678 INFO L93 Difference]: Finished difference Result 2334 states and 8126 transitions. [2021-10-07 14:58:03,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 14:58:03,679 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 [2021-10-07 14:58:03,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:03,686 INFO L225 Difference]: With dead ends: 2334 [2021-10-07 14:58:03,686 INFO L226 Difference]: Without dead ends: 2294 [2021-10-07 14:58:03,687 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 221.4ms TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2021-10-07 14:58:03,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2021-10-07 14:58:03,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 1484. [2021-10-07 14:58:03,719 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) [2021-10-07 14:58:03,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 5077 transitions. [2021-10-07 14:58:03,724 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 5077 transitions. Word has length 28 [2021-10-07 14:58:03,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:03,724 INFO L470 AbstractCegarLoop]: Abstraction has 1484 states and 5077 transitions. [2021-10-07 14:58:03,724 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) [2021-10-07 14:58:03,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 5077 transitions. [2021-10-07 14:58:03,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 14:58:03,727 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:03,727 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] [2021-10-07 14:58:03,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-10-07 14:58:03,728 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:58:03,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:03,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1093868840, now seen corresponding path program 12 times [2021-10-07 14:58:03,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:03,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142990257] [2021-10-07 14:58:03,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:03,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:03,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:03,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:03,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142990257] [2021-10-07 14:58:03,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142990257] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:03,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:58:03,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-07 14:58:03,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669844338] [2021-10-07 14:58:03,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 14:58:03,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:03,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 14:58:03,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:58:03,861 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) [2021-10-07 14:58:04,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:04,398 INFO L93 Difference]: Finished difference Result 2290 states and 8025 transitions. [2021-10-07 14:58:04,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 14:58:04,399 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 [2021-10-07 14:58:04,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:04,399 INFO L225 Difference]: With dead ends: 2290 [2021-10-07 14:58:04,399 INFO L226 Difference]: Without dead ends: 0 [2021-10-07 14:58:04,403 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 226.8ms TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2021-10-07 14:58:04,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-07 14:58:04,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-07 14:58:04,404 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) [2021-10-07 14:58:04,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-07 14:58:04,404 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-10-07 14:58:04,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:04,405 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-07 14:58:04,405 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) [2021-10-07 14:58:04,405 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-07 14:58:04,405 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-07 14:58:04,409 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,410 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,410 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,410 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,411 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,411 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,411 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,411 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,411 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,412 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,412 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,412 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,412 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 14:58:04,413 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 14:58:04,413 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-07 14:58:04,413 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-07 14:58:04,413 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,413 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,414 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,414 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,414 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,414 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,414 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,415 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,415 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,415 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,415 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,416 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,416 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,416 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,416 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,416 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,416 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,417 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,417 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,417 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:58:04,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-10-07 14:58:04,423 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 14:58:04,423 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 14:58:04,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 02:58:04 BasicIcfg [2021-10-07 14:58:04,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 14:58:04,427 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-07 14:58:04,427 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-07 14:58:04,427 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-07 14:58:04,428 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:55:40" (3/4) ... [2021-10-07 14:58:04,431 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-07 14:58:04,438 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-07 14:58:04,438 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-07 14:58:04,438 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-07 14:58:04,438 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2021-10-07 14:58:04,448 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-07 14:58:04,448 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-07 14:58:04,449 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-07 14:58:04,449 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-07 14:58:04,500 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/weaver/parallel-ticket-4.wvr.c-witness.graphml [2021-10-07 14:58:04,500 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-07 14:58:04,502 INFO L168 Benchmark]: Toolchain (without parser) took 145820.85 ms. Allocated memory was 155.2 MB in the beginning and 6.7 GB in the end (delta: 6.6 GB). Free memory was 129.0 MB in the beginning and 3.4 GB in the end (delta: -3.2 GB). Peak memory consumption was 3.3 GB. Max. memory is 8.0 GB. [2021-10-07 14:58:04,502 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 155.2 MB. Free memory is still 127.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 14:58:04,503 INFO L168 Benchmark]: CACSL2BoogieTranslator took 429.95 ms. Allocated memory is still 155.2 MB. Free memory was 128.7 MB in the beginning and 118.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-07 14:58:04,503 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.05 ms. Allocated memory is still 155.2 MB. Free memory was 118.0 MB in the beginning and 115.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 14:58:04,503 INFO L168 Benchmark]: Boogie Preprocessor took 67.13 ms. Allocated memory is still 155.2 MB. Free memory was 115.9 MB in the beginning and 114.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 14:58:04,504 INFO L168 Benchmark]: RCFGBuilder took 823.58 ms. Allocated memory is still 155.2 MB. Free memory was 114.5 MB in the beginning and 126.3 MB in the end (delta: -11.8 MB). Peak memory consumption was 13.5 MB. Max. memory is 8.0 GB. [2021-10-07 14:58:04,504 INFO L168 Benchmark]: TraceAbstraction took 144337.82 ms. Allocated memory was 155.2 MB in the beginning and 6.7 GB in the end (delta: 6.6 GB). Free memory was 125.8 MB in the beginning and 3.4 GB in the end (delta: -3.2 GB). Peak memory consumption was 3.3 GB. Max. memory is 8.0 GB. [2021-10-07 14:58:04,505 INFO L168 Benchmark]: Witness Printer took 73.30 ms. Allocated memory is still 6.7 GB. Free memory was 3.4 GB in the beginning and 3.4 GB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-10-07 14:58:04,507 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 155.2 MB. Free memory is still 127.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 429.95 ms. Allocated memory is still 155.2 MB. Free memory was 128.7 MB in the beginning and 118.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 70.05 ms. Allocated memory is still 155.2 MB. Free memory was 118.0 MB in the beginning and 115.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 67.13 ms. Allocated memory is still 155.2 MB. Free memory was 115.9 MB in the beginning and 114.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 823.58 ms. Allocated memory is still 155.2 MB. Free memory was 114.5 MB in the beginning and 126.3 MB in the end (delta: -11.8 MB). Peak memory consumption was 13.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 144337.82 ms. Allocated memory was 155.2 MB in the beginning and 6.7 GB in the end (delta: 6.6 GB). Free memory was 125.8 MB in the beginning and 3.4 GB in the end (delta: -3.2 GB). Peak memory consumption was 3.3 GB. Max. memory is 8.0 GB. * Witness Printer took 73.30 ms. Allocated memory is still 6.7 GB. Free memory was 3.4 GB in the beginning and 3.4 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: 7081.7ms, 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: 217, positive: 58, positive conditional: 0, positive unconditional: 58, negative: 158, negative conditional: 0, negative unconditional: 158, 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: 144151.2ms, OverallIterations: 113, TraceHistogramMax: 1, EmptinessCheckTime: 1058.8ms, AutomataDifference: 95855.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8739.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11277 SDtfs, 30560 SDslu, 58194 SDs, 0 SdLazy, 67091 SolverSat, 7223 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 43588.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3142 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3081 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19461 ImplicationChecksByTransitivity, 31005.2ms 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: 23255.0ms AutomataMinimizationTime, 113 MinimizatonAttempts, 267730 StatesRemovedByMinimization, 108 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 207.2ms SsaConstructionTime, 1506.5ms SatisfiabilityAnalysisTime, 12335.3ms 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! [2021-10-07 14:58:04,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...