/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-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 14:55:32,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 14:55:32,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 14:55:32,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 14:55:32,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 14:55:32,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 14:55:32,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 14:55:32,219 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 14:55:32,274 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 14:55:32,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 14:55:32,275 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 14:55:32,275 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 14:55:32,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 14:55:32,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 14:55:32,280 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 14:55:32,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 14:55:32,280 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 14:55:32,280 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 14:55:32,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 14:55:32,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 14:55:32,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 14:55:32,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-07 14:55:32,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 14:55:32,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-07 14:55:32,283 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-07 14:55:32,283 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 14:55:32,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-07 14:55:32,283 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 14:55:32,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-07 14:55:32,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 14:55:32,284 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 14:55:32,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 14:55:32,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 14:55:32,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 14:55:32,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 14:55:32,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-07 14:55:32,285 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-07 14:55:32,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-07 14:55:32,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-07 14:55:32,286 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 14:55:32,286 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 14:55:32,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 14:55:32,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 14:55:32,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 14:55:32,713 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 14:55:32,714 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 14:55:32,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c [2021-10-07 14:55:32,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afda25034/c5d77d6aca014525b82d8c1121a4b91c/FLAG86fee0dd9 [2021-10-07 14:55:33,409 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 14:55:33,410 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c [2021-10-07 14:55:33,417 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afda25034/c5d77d6aca014525b82d8c1121a4b91c/FLAG86fee0dd9 [2021-10-07 14:55:33,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afda25034/c5d77d6aca014525b82d8c1121a4b91c [2021-10-07 14:55:33,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 14:55:33,792 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-07 14:55:33,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 14:55:33,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 14:55:33,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 14:55:33,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:55:33" (1/1) ... [2021-10-07 14:55:33,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f4d9e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:55:33, skipping insertion in model container [2021-10-07 14:55:33,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:55:33" (1/1) ... [2021-10-07 14:55:33,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 14:55:33,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 14:55:34,076 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-3.wvr.c[2520,2533] [2021-10-07 14:55:34,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 14:55:34,088 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 14:55:34,114 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-3.wvr.c[2520,2533] [2021-10-07 14:55:34,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 14:55:34,132 INFO L208 MainTranslator]: Completed translation [2021-10-07 14:55:34,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:55:34 WrapperNode [2021-10-07 14:55:34,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 14:55:34,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 14:55:34,135 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 14:55:34,135 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 14:55:34,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:55:34" (1/1) ... [2021-10-07 14:55:34,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:55:34" (1/1) ... [2021-10-07 14:55:34,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 14:55:34,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 14:55:34,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 14:55:34,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 14:55:34,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:55:34" (1/1) ... [2021-10-07 14:55:34,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:55:34" (1/1) ... [2021-10-07 14:55:34,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:55:34" (1/1) ... [2021-10-07 14:55:34,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:55:34" (1/1) ... [2021-10-07 14:55:34,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:55:34" (1/1) ... [2021-10-07 14:55:34,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:55:34" (1/1) ... [2021-10-07 14:55:34,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:55:34" (1/1) ... [2021-10-07 14:55:34,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 14:55:34,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 14:55:34,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 14:55:34,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 14:55:34,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:55:34" (1/1) ... [2021-10-07 14:55:34,226 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 14:55:34,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:55:34,260 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 14:55:34,276 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 14:55:34,324 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 14:55:34,325 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 14:55:34,325 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 14:55:34,325 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 14:55:34,325 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-07 14:55:34,325 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-07 14:55:34,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-07 14:55:34,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 14:55:34,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-07 14:55:34,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 14:55:34,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 14:55:34,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 14:55:34,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 14:55:34,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-07 14:55:34,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 14:55:34,329 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 14:55:35,079 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 14:55:35,080 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-07 14:55:35,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:55:35 BoogieIcfgContainer [2021-10-07 14:55:35,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 14:55:35,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 14:55:35,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 14:55:35,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 14:55:35,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:55:33" (1/3) ... [2021-10-07 14:55:35,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5028f57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:55:35, skipping insertion in model container [2021-10-07 14:55:35,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:55:34" (2/3) ... [2021-10-07 14:55:35,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5028f57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:55:35, skipping insertion in model container [2021-10-07 14:55:35,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:55:35" (3/3) ... [2021-10-07 14:55:35,096 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-3.wvr.c [2021-10-07 14:55:35,105 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-07 14:55:35,105 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 14:55:35,106 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-10-07 14:55:35,106 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 14:55:35,146 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,146 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,147 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,147 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,147 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,148 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,151 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,151 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,151 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,152 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,152 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,152 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,152 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,152 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,153 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,153 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,153 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,153 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,153 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,154 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,154 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,154 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,154 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,155 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,155 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,155 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,155 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,155 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,156 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,156 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,156 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,156 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,156 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,157 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,157 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,157 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,158 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,158 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,158 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,159 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,159 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,159 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,159 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,160 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,160 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,160 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,160 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,160 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,161 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,161 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,161 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,161 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,161 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,161 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,162 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,162 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,162 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,162 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,163 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,163 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,163 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,163 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,163 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,164 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,164 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,164 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,164 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,165 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,165 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,165 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,165 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,165 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,166 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,167 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,167 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,167 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,167 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,168 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,168 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,168 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,168 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,168 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,169 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,169 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,169 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,169 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,170 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,170 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,170 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,170 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,171 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,171 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,171 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,171 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,171 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,172 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,172 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,172 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,172 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,173 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,173 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,173 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,173 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,173 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,174 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,174 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,174 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,174 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,178 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,178 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,179 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,179 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,179 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,179 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,182 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,182 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,182 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,182 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,183 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,183 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,185 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,185 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,186 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,186 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,186 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,186 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:55:35,196 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-07 14:55:35,256 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 14:55:35,265 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 14:55:35,265 INFO L340 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2021-10-07 14:55:35,291 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 14:55:35,304 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 149 transitions, 322 flow [2021-10-07 14:55:35,308 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 149 transitions, 322 flow [2021-10-07 14:55:35,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 154 places, 149 transitions, 322 flow [2021-10-07 14:55:35,420 INFO L129 PetriNetUnfolder]: 5/146 cut-off events. [2021-10-07 14:55:35,421 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-07 14:55:35,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 146 events. 5/146 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 172 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 103. Up to 2 conditions per place. [2021-10-07 14:55:35,439 INFO L116 LiptonReduction]: Number of co-enabled transitions 3640 [2021-10-07 14:55:41,209 INFO L131 LiptonReduction]: Checked pairs total: 9001 [2021-10-07 14:55:41,210 INFO L133 LiptonReduction]: Total number of compositions: 130 [2021-10-07 14:55:41,220 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 46 transitions, 116 flow [2021-10-07 14:55:41,350 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2658 states, 2531 states have (on average 3.4796523113393913) internal successors, (8807), 2657 states have internal predecessors, (8807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:41,363 INFO L276 IsEmpty]: Start isEmpty. Operand has 2658 states, 2531 states have (on average 3.4796523113393913) internal successors, (8807), 2657 states have internal predecessors, (8807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:41,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 14:55:41,369 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:41,370 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 14:55:41,371 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:41,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:41,377 INFO L82 PathProgramCache]: Analyzing trace with hash 568644, now seen corresponding path program 1 times [2021-10-07 14:55:41,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:41,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223650543] [2021-10-07 14:55:41,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:41,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:41,618 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 14:55:41,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:41,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223650543] [2021-10-07 14:55:41,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223650543] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:41,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:41,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 14:55:41,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199491074] [2021-10-07 14:55:41,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:55:41,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:41,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:55:41,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:55:41,657 INFO L87 Difference]: Start difference. First operand has 2658 states, 2531 states have (on average 3.4796523113393913) internal successors, (8807), 2657 states have internal predecessors, (8807), 0 states have call successors, (0), 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 14:55:41,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:41,784 INFO L93 Difference]: Finished difference Result 2586 states and 8065 transitions. [2021-10-07 14:55:41,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:55:41,786 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 14:55:41,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:41,849 INFO L225 Difference]: With dead ends: 2586 [2021-10-07 14:55:41,849 INFO L226 Difference]: Without dead ends: 2564 [2021-10-07 14:55:41,850 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:55:41,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2021-10-07 14:55:42,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 2564. [2021-10-07 14:55:42,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2564 states, 2448 states have (on average 3.2655228758169934) internal successors, (7994), 2563 states have internal predecessors, (7994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:42,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2564 states to 2564 states and 7994 transitions. [2021-10-07 14:55:42,072 INFO L78 Accepts]: Start accepts. Automaton has 2564 states and 7994 transitions. Word has length 3 [2021-10-07 14:55:42,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:42,073 INFO L470 AbstractCegarLoop]: Abstraction has 2564 states and 7994 transitions. [2021-10-07 14:55:42,073 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 14:55:42,074 INFO L276 IsEmpty]: Start isEmpty. Operand 2564 states and 7994 transitions. [2021-10-07 14:55:42,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 14:55:42,074 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:42,074 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 14:55:42,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-07 14:55:42,075 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:42,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:42,076 INFO L82 PathProgramCache]: Analyzing trace with hash -238868097, now seen corresponding path program 1 times [2021-10-07 14:55:42,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:42,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863067187] [2021-10-07 14:55:42,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:42,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:42,161 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 14:55:42,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:42,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863067187] [2021-10-07 14:55:42,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863067187] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:42,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:42,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-07 14:55:42,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745121732] [2021-10-07 14:55:42,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:55:42,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:42,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:55:42,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:55:42,166 INFO L87 Difference]: Start difference. First operand 2564 states and 7994 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:42,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:42,326 INFO L93 Difference]: Finished difference Result 2620 states and 8325 transitions. [2021-10-07 14:55:42,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:55:42,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-07 14:55:42,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:42,355 INFO L225 Difference]: With dead ends: 2620 [2021-10-07 14:55:42,356 INFO L226 Difference]: Without dead ends: 2620 [2021-10-07 14:55:42,357 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.4ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:55:42,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2021-10-07 14:55:42,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 1902. [2021-10-07 14:55:42,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1902 states, 1847 states have (on average 3.1662154845695722) internal successors, (5848), 1901 states have internal predecessors, (5848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:42,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 5848 transitions. [2021-10-07 14:55:42,450 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 5848 transitions. Word has length 6 [2021-10-07 14:55:42,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:42,451 INFO L470 AbstractCegarLoop]: Abstraction has 1902 states and 5848 transitions. [2021-10-07 14:55:42,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:42,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 5848 transitions. [2021-10-07 14:55:42,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 14:55:42,452 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:42,452 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 14:55:42,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-07 14:55:42,453 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:42,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:42,453 INFO L82 PathProgramCache]: Analyzing trace with hash -238847422, now seen corresponding path program 1 times [2021-10-07 14:55:42,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:42,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385857030] [2021-10-07 14:55:42,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:42,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:42,514 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 14:55:42,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:42,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385857030] [2021-10-07 14:55:42,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385857030] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:42,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:42,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:55:42,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089663320] [2021-10-07 14:55:42,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:55:42,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:42,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:55:42,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:55:42,518 INFO L87 Difference]: Start difference. First operand 1902 states and 5848 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 14:55:42,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:42,614 INFO L93 Difference]: Finished difference Result 1942 states and 5679 transitions. [2021-10-07 14:55:42,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:55:42,615 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 14:55:42,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:42,633 INFO L225 Difference]: With dead ends: 1942 [2021-10-07 14:55:42,634 INFO L226 Difference]: Without dead ends: 1942 [2021-10-07 14:55:42,634 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:55:42,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2021-10-07 14:55:42,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1676. [2021-10-07 14:55:42,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1676 states, 1639 states have (on average 3.117144600366077) internal successors, (5109), 1675 states have internal predecessors, (5109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:42,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 5109 transitions. [2021-10-07 14:55:42,720 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 5109 transitions. Word has length 6 [2021-10-07 14:55:42,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:42,721 INFO L470 AbstractCegarLoop]: Abstraction has 1676 states and 5109 transitions. [2021-10-07 14:55:42,721 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 14:55:42,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 5109 transitions. [2021-10-07 14:55:42,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 14:55:42,722 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:42,722 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 14:55:42,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-07 14:55:42,723 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:42,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:42,724 INFO L82 PathProgramCache]: Analyzing trace with hash -238847421, now seen corresponding path program 1 times [2021-10-07 14:55:42,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:42,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828706561] [2021-10-07 14:55:42,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:42,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:42,769 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 14:55:42,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:42,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828706561] [2021-10-07 14:55:42,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828706561] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:42,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:42,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:55:42,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626118998] [2021-10-07 14:55:42,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:55:42,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:42,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:55:42,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:55:42,773 INFO L87 Difference]: Start difference. First operand 1676 states and 5109 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 14:55:42,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:42,801 INFO L93 Difference]: Finished difference Result 1264 states and 3800 transitions. [2021-10-07 14:55:42,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:55:42,802 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 14:55:42,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:42,813 INFO L225 Difference]: With dead ends: 1264 [2021-10-07 14:55:42,813 INFO L226 Difference]: Without dead ends: 1264 [2021-10-07 14:55:42,813 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 14:55:42,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2021-10-07 14:55:42,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1264. [2021-10-07 14:55:42,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1245 states have (on average 3.0522088353413657) internal successors, (3800), 1263 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:42,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 3800 transitions. [2021-10-07 14:55:42,863 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 3800 transitions. Word has length 6 [2021-10-07 14:55:42,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:42,864 INFO L470 AbstractCegarLoop]: Abstraction has 1264 states and 3800 transitions. [2021-10-07 14:55:42,864 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 14:55:42,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 3800 transitions. [2021-10-07 14:55:42,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 14:55:42,865 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:42,865 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:42,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-07 14:55:42,866 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:42,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:42,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1185018861, now seen corresponding path program 1 times [2021-10-07 14:55:42,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:42,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461066147] [2021-10-07 14:55:42,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:42,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:42,927 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 14:55:42,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:42,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461066147] [2021-10-07 14:55:42,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461066147] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:42,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:42,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-07 14:55:42,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328284738] [2021-10-07 14:55:42,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:55:42,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:42,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:55:42,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:55:42,931 INFO L87 Difference]: Start difference. First operand 1264 states and 3800 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 14:55:43,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:43,011 INFO L93 Difference]: Finished difference Result 1400 states and 4183 transitions. [2021-10-07 14:55:43,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:55:43,011 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 14:55:43,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:43,023 INFO L225 Difference]: With dead ends: 1400 [2021-10-07 14:55:43,024 INFO L226 Difference]: Without dead ends: 1400 [2021-10-07 14:55:43,024 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.7ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:55:43,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2021-10-07 14:55:43,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1022. [2021-10-07 14:55:43,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 1007 states have (on average 2.903674280039722) internal successors, (2924), 1021 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:43,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 2924 transitions. [2021-10-07 14:55:43,072 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 2924 transitions. Word has length 7 [2021-10-07 14:55:43,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:43,073 INFO L470 AbstractCegarLoop]: Abstraction has 1022 states and 2924 transitions. [2021-10-07 14:55:43,073 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 14:55:43,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 2924 transitions. [2021-10-07 14:55:43,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 14:55:43,075 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:43,075 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:43,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-07 14:55:43,076 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:43,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:43,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1257839861, now seen corresponding path program 1 times [2021-10-07 14:55:43,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:43,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430615638] [2021-10-07 14:55:43,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:43,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:43,183 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 14:55:43,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:43,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430615638] [2021-10-07 14:55:43,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430615638] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:43,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:43,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-07 14:55:43,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750955013] [2021-10-07 14:55:43,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:55:43,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:43,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:55:43,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:55:43,189 INFO L87 Difference]: Start difference. First operand 1022 states and 2924 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 14:55:43,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:43,226 INFO L93 Difference]: Finished difference Result 814 states and 2281 transitions. [2021-10-07 14:55:43,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:55:43,227 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 14:55:43,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:43,234 INFO L225 Difference]: With dead ends: 814 [2021-10-07 14:55:43,234 INFO L226 Difference]: Without dead ends: 814 [2021-10-07 14:55:43,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.8ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:55:43,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2021-10-07 14:55:43,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 814. [2021-10-07 14:55:43,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 808 states have (on average 2.823019801980198) internal successors, (2281), 813 states have internal predecessors, (2281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:43,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 2281 transitions. [2021-10-07 14:55:43,282 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 2281 transitions. Word has length 9 [2021-10-07 14:55:43,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:43,282 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 2281 transitions. [2021-10-07 14:55:43,283 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 14:55:43,283 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 2281 transitions. [2021-10-07 14:55:43,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 14:55:43,294 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:43,294 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:43,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-07 14:55:43,295 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:43,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:43,302 INFO L82 PathProgramCache]: Analyzing trace with hash 635564268, now seen corresponding path program 1 times [2021-10-07 14:55:43,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:43,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801629789] [2021-10-07 14:55:43,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:43,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:43,420 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 14:55:43,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:43,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801629789] [2021-10-07 14:55:43,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801629789] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:43,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:43,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-07 14:55:43,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387837839] [2021-10-07 14:55:43,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 14:55:43,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:43,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 14:55:43,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-07 14:55:43,423 INFO L87 Difference]: Start difference. First operand 814 states and 2281 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 14:55:43,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:43,658 INFO L93 Difference]: Finished difference Result 1328 states and 3716 transitions. [2021-10-07 14:55:43,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 14:55:43,659 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 14:55:43,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:43,669 INFO L225 Difference]: With dead ends: 1328 [2021-10-07 14:55:43,670 INFO L226 Difference]: Without dead ends: 1286 [2021-10-07 14:55:43,670 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 68.2ms TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:55:43,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2021-10-07 14:55:43,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 910. [2021-10-07 14:55:43,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 904 states have (on average 2.774336283185841) internal successors, (2508), 909 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:43,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 2508 transitions. [2021-10-07 14:55:43,710 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 2508 transitions. Word has length 14 [2021-10-07 14:55:43,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:43,711 INFO L470 AbstractCegarLoop]: Abstraction has 910 states and 2508 transitions. [2021-10-07 14:55:43,711 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 14:55:43,712 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 2508 transitions. [2021-10-07 14:55:43,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 14:55:43,713 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:43,713 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:43,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-07 14:55:43,714 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:43,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:43,715 INFO L82 PathProgramCache]: Analyzing trace with hash 89794322, now seen corresponding path program 2 times [2021-10-07 14:55:43,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:43,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345588428] [2021-10-07 14:55:43,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:43,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:43,791 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 14:55:43,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:43,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345588428] [2021-10-07 14:55:43,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345588428] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:43,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:43,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-07 14:55:43,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027269976] [2021-10-07 14:55:43,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 14:55:43,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:43,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 14:55:43,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-07 14:55:43,794 INFO L87 Difference]: Start difference. First operand 910 states and 2508 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 14:55:44,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:44,047 INFO L93 Difference]: Finished difference Result 1504 states and 4267 transitions. [2021-10-07 14:55:44,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 14:55:44,048 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 14:55:44,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:44,060 INFO L225 Difference]: With dead ends: 1504 [2021-10-07 14:55:44,060 INFO L226 Difference]: Without dead ends: 1474 [2021-10-07 14:55:44,061 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 82.6ms TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-10-07 14:55:44,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-10-07 14:55:44,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 970. [2021-10-07 14:55:44,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 964 states have (on average 2.787344398340249) internal successors, (2687), 969 states have internal predecessors, (2687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:44,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 2687 transitions. [2021-10-07 14:55:44,111 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 2687 transitions. Word has length 14 [2021-10-07 14:55:44,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:44,111 INFO L470 AbstractCegarLoop]: Abstraction has 970 states and 2687 transitions. [2021-10-07 14:55:44,112 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 14:55:44,112 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 2687 transitions. [2021-10-07 14:55:44,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 14:55:44,113 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:44,114 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:44,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-07 14:55:44,114 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:44,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:44,115 INFO L82 PathProgramCache]: Analyzing trace with hash 162401580, now seen corresponding path program 3 times [2021-10-07 14:55:44,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:44,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412199290] [2021-10-07 14:55:44,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:44,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:44,189 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 14:55:44,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:44,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412199290] [2021-10-07 14:55:44,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412199290] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:44,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:44,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-07 14:55:44,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114556114] [2021-10-07 14:55:44,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 14:55:44,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:44,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 14:55:44,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-07 14:55:44,193 INFO L87 Difference]: Start difference. First operand 970 states and 2687 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 14:55:44,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:44,376 INFO L93 Difference]: Finished difference Result 1254 states and 3629 transitions. [2021-10-07 14:55:44,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 14:55:44,377 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 14:55:44,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:44,387 INFO L225 Difference]: With dead ends: 1254 [2021-10-07 14:55:44,387 INFO L226 Difference]: Without dead ends: 1224 [2021-10-07 14:55:44,388 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 58.5ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:55:44,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2021-10-07 14:55:44,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 750. [2021-10-07 14:55:44,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 745 states have (on average 2.810738255033557) internal successors, (2094), 749 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:44,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 2094 transitions. [2021-10-07 14:55:44,417 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 2094 transitions. Word has length 14 [2021-10-07 14:55:44,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:44,418 INFO L470 AbstractCegarLoop]: Abstraction has 750 states and 2094 transitions. [2021-10-07 14:55:44,418 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 14:55:44,418 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 2094 transitions. [2021-10-07 14:55:44,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 14:55:44,429 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:44,430 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:44,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-07 14:55:44,430 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:44,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:44,431 INFO L82 PathProgramCache]: Analyzing trace with hash 191085358, now seen corresponding path program 1 times [2021-10-07 14:55:44,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:44,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733244204] [2021-10-07 14:55:44,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:44,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:44,537 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 14:55:44,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:44,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733244204] [2021-10-07 14:55:44,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733244204] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:44,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:44,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-07 14:55:44,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192363699] [2021-10-07 14:55:44,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 14:55:44,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:44,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 14:55:44,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-07 14:55:44,541 INFO L87 Difference]: Start difference. First operand 750 states and 2094 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 14:55:44,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:44,724 INFO L93 Difference]: Finished difference Result 1062 states and 3081 transitions. [2021-10-07 14:55:44,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 14:55:44,725 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 14:55:44,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:44,732 INFO L225 Difference]: With dead ends: 1062 [2021-10-07 14:55:44,733 INFO L226 Difference]: Without dead ends: 978 [2021-10-07 14:55:44,733 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 54.1ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:55:44,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2021-10-07 14:55:44,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 704. [2021-10-07 14:55:44,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 700 states have (on average 2.7942857142857145) internal successors, (1956), 703 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:44,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1956 transitions. [2021-10-07 14:55:44,762 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1956 transitions. Word has length 14 [2021-10-07 14:55:44,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:44,762 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 1956 transitions. [2021-10-07 14:55:44,763 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 14:55:44,763 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1956 transitions. [2021-10-07 14:55:44,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 14:55:44,765 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:44,765 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:44,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-07 14:55:44,766 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:44,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:44,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1799273358, now seen corresponding path program 1 times [2021-10-07 14:55:44,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:44,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915781976] [2021-10-07 14:55:44,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:44,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:44,858 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 14:55:44,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:44,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915781976] [2021-10-07 14:55:44,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915781976] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:44,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:44,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-07 14:55:44,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658715647] [2021-10-07 14:55:44,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 14:55:44,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:44,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 14:55:44,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-07 14:55:44,862 INFO L87 Difference]: Start difference. First operand 704 states and 1956 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 14:55:45,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:45,072 INFO L93 Difference]: Finished difference Result 992 states and 2863 transitions. [2021-10-07 14:55:45,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 14:55:45,073 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 14:55:45,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:45,079 INFO L225 Difference]: With dead ends: 992 [2021-10-07 14:55:45,079 INFO L226 Difference]: Without dead ends: 888 [2021-10-07 14:55:45,079 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 58.6ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:55:45,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2021-10-07 14:55:45,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 644. [2021-10-07 14:55:45,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 641 states have (on average 2.7737909516380657) internal successors, (1778), 643 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:45,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1778 transitions. [2021-10-07 14:55:45,104 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1778 transitions. Word has length 15 [2021-10-07 14:55:45,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:45,104 INFO L470 AbstractCegarLoop]: Abstraction has 644 states and 1778 transitions. [2021-10-07 14:55:45,104 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 14:55:45,105 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1778 transitions. [2021-10-07 14:55:45,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:45,107 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:45,107 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 14:55:45,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-07 14:55:45,108 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:45,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:45,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1968857543, now seen corresponding path program 1 times [2021-10-07 14:55:45,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:45,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292531095] [2021-10-07 14:55:45,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:45,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:45,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:55:45,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:45,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292531095] [2021-10-07 14:55:45,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292531095] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:45,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:45,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-07 14:55:45,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157706261] [2021-10-07 14:55:45,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 14:55:45,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:45,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 14:55:45,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-07 14:55:45,209 INFO L87 Difference]: Start difference. First operand 644 states and 1778 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 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 14:55:45,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:45,455 INFO L93 Difference]: Finished difference Result 1130 states and 3126 transitions. [2021-10-07 14:55:45,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 14:55:45,456 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 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 14:55:45,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:45,461 INFO L225 Difference]: With dead ends: 1130 [2021-10-07 14:55:45,461 INFO L226 Difference]: Without dead ends: 1104 [2021-10-07 14:55:45,462 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 86.6ms TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-10-07 14:55:45,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2021-10-07 14:55:45,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 688. [2021-10-07 14:55:45,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 685 states have (on average 2.7343065693430657) internal successors, (1873), 687 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:45,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1873 transitions. [2021-10-07 14:55:45,488 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1873 transitions. Word has length 21 [2021-10-07 14:55:45,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:45,489 INFO L470 AbstractCegarLoop]: Abstraction has 688 states and 1873 transitions. [2021-10-07 14:55:45,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 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 14:55:45,489 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1873 transitions. [2021-10-07 14:55:45,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:45,492 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:45,492 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 14:55:45,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-07 14:55:45,492 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:45,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:45,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1079060841, now seen corresponding path program 2 times [2021-10-07 14:55:45,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:45,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808655645] [2021-10-07 14:55:45,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:45,494 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:45,579 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 14:55:45,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:45,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808655645] [2021-10-07 14:55:45,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808655645] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:45,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:45,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-07 14:55:45,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410244916] [2021-10-07 14:55:45,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 14:55:45,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:45,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 14:55:45,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:55:45,582 INFO L87 Difference]: Start difference. First operand 688 states and 1873 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 14:55:45,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:45,872 INFO L93 Difference]: Finished difference Result 1260 states and 3473 transitions. [2021-10-07 14:55:45,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 14:55:45,872 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 14:55:45,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:45,888 INFO L225 Difference]: With dead ends: 1260 [2021-10-07 14:55:45,888 INFO L226 Difference]: Without dead ends: 1224 [2021-10-07 14:55:45,889 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 123.1ms TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-10-07 14:55:45,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2021-10-07 14:55:45,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 682. [2021-10-07 14:55:45,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 679 states have (on average 2.736377025036819) internal successors, (1858), 681 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:45,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1858 transitions. [2021-10-07 14:55:45,915 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1858 transitions. Word has length 21 [2021-10-07 14:55:45,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:45,915 INFO L470 AbstractCegarLoop]: Abstraction has 682 states and 1858 transitions. [2021-10-07 14:55:45,916 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 14:55:45,916 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1858 transitions. [2021-10-07 14:55:45,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:45,918 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:45,918 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 14:55:45,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-07 14:55:45,919 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:45,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:45,919 INFO L82 PathProgramCache]: Analyzing trace with hash -567361098, now seen corresponding path program 1 times [2021-10-07 14:55:45,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:45,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566778056] [2021-10-07 14:55:45,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:45,920 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:46,000 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 14:55:46,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:46,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566778056] [2021-10-07 14:55:46,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566778056] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:46,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:46,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-07 14:55:46,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101465968] [2021-10-07 14:55:46,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 14:55:46,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:46,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 14:55:46,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:55:46,003 INFO L87 Difference]: Start difference. First operand 682 states and 1858 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 14:55:46,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:46,286 INFO L93 Difference]: Finished difference Result 1094 states and 3073 transitions. [2021-10-07 14:55:46,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 14:55:46,286 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 14:55:46,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:46,291 INFO L225 Difference]: With dead ends: 1094 [2021-10-07 14:55:46,291 INFO L226 Difference]: Without dead ends: 1070 [2021-10-07 14:55:46,292 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 99.6ms TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2021-10-07 14:55:46,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2021-10-07 14:55:46,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 730. [2021-10-07 14:55:46,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 727 states have (on average 2.720770288858322) internal successors, (1978), 729 states have internal predecessors, (1978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:46,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1978 transitions. [2021-10-07 14:55:46,320 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1978 transitions. Word has length 21 [2021-10-07 14:55:46,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:46,320 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 1978 transitions. [2021-10-07 14:55:46,321 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 14:55:46,321 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1978 transitions. [2021-10-07 14:55:46,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:46,323 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:46,323 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] [2021-10-07 14:55:46,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-07 14:55:46,324 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:46,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:46,325 INFO L82 PathProgramCache]: Analyzing trace with hash -567254863, now seen corresponding path program 3 times [2021-10-07 14:55:46,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:46,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090658873] [2021-10-07 14:55:46,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:46,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:46,409 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 14:55:46,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:46,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090658873] [2021-10-07 14:55:46,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090658873] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:46,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:46,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-07 14:55:46,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962644429] [2021-10-07 14:55:46,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 14:55:46,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:46,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 14:55:46,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:55:46,412 INFO L87 Difference]: Start difference. First operand 730 states and 1978 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 14:55:46,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:46,676 INFO L93 Difference]: Finished difference Result 1088 states and 3042 transitions. [2021-10-07 14:55:46,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 14:55:46,677 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 14:55:46,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:46,680 INFO L225 Difference]: With dead ends: 1088 [2021-10-07 14:55:46,681 INFO L226 Difference]: Without dead ends: 1004 [2021-10-07 14:55:46,681 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 102.8ms TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2021-10-07 14:55:46,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-10-07 14:55:46,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 676. [2021-10-07 14:55:46,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 673 states have (on average 2.725111441307578) internal successors, (1834), 675 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:46,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1834 transitions. [2021-10-07 14:55:46,706 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1834 transitions. Word has length 21 [2021-10-07 14:55:46,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:46,706 INFO L470 AbstractCegarLoop]: Abstraction has 676 states and 1834 transitions. [2021-10-07 14:55:46,706 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 14:55:46,706 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1834 transitions. [2021-10-07 14:55:46,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:46,709 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:46,709 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 14:55:46,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-07 14:55:46,710 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:46,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:46,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1662054432, now seen corresponding path program 2 times [2021-10-07 14:55:46,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:46,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485728695] [2021-10-07 14:55:46,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:46,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:46,788 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 14:55:46,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:46,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485728695] [2021-10-07 14:55:46,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485728695] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:46,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:46,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-07 14:55:46,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416421133] [2021-10-07 14:55:46,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 14:55:46,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:46,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 14:55:46,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-07 14:55:46,791 INFO L87 Difference]: Start difference. First operand 676 states and 1834 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 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 14:55:47,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:47,044 INFO L93 Difference]: Finished difference Result 1098 states and 3039 transitions. [2021-10-07 14:55:47,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 14:55:47,045 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 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 14:55:47,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:47,050 INFO L225 Difference]: With dead ends: 1098 [2021-10-07 14:55:47,050 INFO L226 Difference]: Without dead ends: 1082 [2021-10-07 14:55:47,051 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 86.8ms TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-10-07 14:55:47,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2021-10-07 14:55:47,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 690. [2021-10-07 14:55:47,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 687 states have (on average 2.7132459970887917) internal successors, (1864), 689 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:47,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1864 transitions. [2021-10-07 14:55:47,075 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1864 transitions. Word has length 21 [2021-10-07 14:55:47,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:47,075 INFO L470 AbstractCegarLoop]: Abstraction has 690 states and 1864 transitions. [2021-10-07 14:55:47,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 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 14:55:47,075 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1864 transitions. [2021-10-07 14:55:47,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:47,078 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:47,078 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 14:55:47,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-07 14:55:47,078 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:47,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:47,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1522632552, now seen corresponding path program 3 times [2021-10-07 14:55:47,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:47,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954465546] [2021-10-07 14:55:47,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:47,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:47,166 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 14:55:47,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:47,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954465546] [2021-10-07 14:55:47,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954465546] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:47,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:47,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-07 14:55:47,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979140699] [2021-10-07 14:55:47,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 14:55:47,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:47,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 14:55:47,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:55:47,169 INFO L87 Difference]: Start difference. First operand 690 states and 1864 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 14:55:47,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:47,502 INFO L93 Difference]: Finished difference Result 1206 states and 3335 transitions. [2021-10-07 14:55:47,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 14:55:47,502 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 14:55:47,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:47,507 INFO L225 Difference]: With dead ends: 1206 [2021-10-07 14:55:47,507 INFO L226 Difference]: Without dead ends: 1158 [2021-10-07 14:55:47,508 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 121.7ms TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-10-07 14:55:47,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2021-10-07 14:55:47,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 666. [2021-10-07 14:55:47,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 663 states have (on average 2.7435897435897436) internal successors, (1819), 665 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:47,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1819 transitions. [2021-10-07 14:55:47,536 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1819 transitions. Word has length 21 [2021-10-07 14:55:47,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:47,537 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 1819 transitions. [2021-10-07 14:55:47,537 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 14:55:47,537 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1819 transitions. [2021-10-07 14:55:47,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:47,539 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:47,540 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 14:55:47,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-07 14:55:47,540 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:47,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:47,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1089384109, now seen corresponding path program 4 times [2021-10-07 14:55:47,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:47,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142155042] [2021-10-07 14:55:47,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:47,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:47,625 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 14:55:47,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:47,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142155042] [2021-10-07 14:55:47,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142155042] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:47,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:47,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-07 14:55:47,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127345975] [2021-10-07 14:55:47,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 14:55:47,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:47,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 14:55:47,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:55:47,628 INFO L87 Difference]: Start difference. First operand 666 states and 1819 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 14:55:47,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:47,922 INFO L93 Difference]: Finished difference Result 1264 states and 3457 transitions. [2021-10-07 14:55:47,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 14:55:47,923 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 14:55:47,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:47,927 INFO L225 Difference]: With dead ends: 1264 [2021-10-07 14:55:47,928 INFO L226 Difference]: Without dead ends: 1238 [2021-10-07 14:55:47,928 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 115.7ms TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2021-10-07 14:55:47,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2021-10-07 14:55:47,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 702. [2021-10-07 14:55:47,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 699 states have (on average 2.7296137339055795) internal successors, (1908), 701 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:47,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1908 transitions. [2021-10-07 14:55:47,957 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1908 transitions. Word has length 21 [2021-10-07 14:55:47,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:47,957 INFO L470 AbstractCegarLoop]: Abstraction has 702 states and 1908 transitions. [2021-10-07 14:55:47,957 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 14:55:47,957 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1908 transitions. [2021-10-07 14:55:47,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:47,960 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:47,960 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 14:55:47,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-07 14:55:47,961 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:47,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:47,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1958534275, now seen corresponding path program 5 times [2021-10-07 14:55:47,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:47,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958943428] [2021-10-07 14:55:47,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:47,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:48,062 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 14:55:48,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:48,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958943428] [2021-10-07 14:55:48,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958943428] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:48,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:48,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-07 14:55:48,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759740761] [2021-10-07 14:55:48,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 14:55:48,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:48,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 14:55:48,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:55:48,067 INFO L87 Difference]: Start difference. First operand 702 states and 1908 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 14:55:48,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:48,365 INFO L93 Difference]: Finished difference Result 1276 states and 3566 transitions. [2021-10-07 14:55:48,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 14:55:48,365 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 14:55:48,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:48,370 INFO L225 Difference]: With dead ends: 1276 [2021-10-07 14:55:48,370 INFO L226 Difference]: Without dead ends: 1240 [2021-10-07 14:55:48,371 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 137.8ms TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2021-10-07 14:55:48,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2021-10-07 14:55:48,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 696. [2021-10-07 14:55:48,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 693 states have (on average 2.7316017316017316) internal successors, (1893), 695 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:48,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1893 transitions. [2021-10-07 14:55:48,398 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1893 transitions. Word has length 21 [2021-10-07 14:55:48,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:48,398 INFO L470 AbstractCegarLoop]: Abstraction has 696 states and 1893 transitions. [2021-10-07 14:55:48,399 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 14:55:48,399 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1893 transitions. [2021-10-07 14:55:48,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:48,401 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:48,401 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 14:55:48,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-07 14:55:48,402 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:48,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:48,402 INFO L82 PathProgramCache]: Analyzing trace with hash 312112336, now seen corresponding path program 4 times [2021-10-07 14:55:48,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:48,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001520844] [2021-10-07 14:55:48,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:48,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:48,484 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 14:55:48,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:48,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001520844] [2021-10-07 14:55:48,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001520844] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:48,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:48,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-07 14:55:48,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094351026] [2021-10-07 14:55:48,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 14:55:48,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:48,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 14:55:48,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:55:48,487 INFO L87 Difference]: Start difference. First operand 696 states and 1893 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 14:55:48,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:48,789 INFO L93 Difference]: Finished difference Result 1150 states and 3229 transitions. [2021-10-07 14:55:48,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 14:55:48,789 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 14:55:48,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:48,793 INFO L225 Difference]: With dead ends: 1150 [2021-10-07 14:55:48,793 INFO L226 Difference]: Without dead ends: 1126 [2021-10-07 14:55:48,794 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 122.2ms TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2021-10-07 14:55:48,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2021-10-07 14:55:48,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 750. [2021-10-07 14:55:48,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 747 states have (on average 2.7202141900937082) internal successors, (2032), 749 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:48,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 2032 transitions. [2021-10-07 14:55:48,821 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 2032 transitions. Word has length 21 [2021-10-07 14:55:48,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:48,822 INFO L470 AbstractCegarLoop]: Abstraction has 750 states and 2032 transitions. [2021-10-07 14:55:48,822 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 14:55:48,822 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 2032 transitions. [2021-10-07 14:55:48,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:48,824 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:48,825 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] [2021-10-07 14:55:48,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-07 14:55:48,825 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:48,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:48,826 INFO L82 PathProgramCache]: Analyzing trace with hash 312218571, now seen corresponding path program 6 times [2021-10-07 14:55:48,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:48,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395256586] [2021-10-07 14:55:48,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:48,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:48,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:55:48,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:48,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395256586] [2021-10-07 14:55:48,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395256586] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:48,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:48,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-07 14:55:48,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890850461] [2021-10-07 14:55:48,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 14:55:48,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:48,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 14:55:48,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:55:48,911 INFO L87 Difference]: Start difference. First operand 750 states and 2032 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 14:55:49,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:49,154 INFO L93 Difference]: Finished difference Result 1144 states and 3198 transitions. [2021-10-07 14:55:49,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 14:55:49,155 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 14:55:49,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:49,159 INFO L225 Difference]: With dead ends: 1144 [2021-10-07 14:55:49,159 INFO L226 Difference]: Without dead ends: 1060 [2021-10-07 14:55:49,160 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 105.3ms TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2021-10-07 14:55:49,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2021-10-07 14:55:49,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 696. [2021-10-07 14:55:49,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 693 states have (on average 2.7157287157287158) internal successors, (1882), 695 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:49,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1882 transitions. [2021-10-07 14:55:49,185 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1882 transitions. Word has length 21 [2021-10-07 14:55:49,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:49,185 INFO L470 AbstractCegarLoop]: Abstraction has 696 states and 1882 transitions. [2021-10-07 14:55:49,186 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 14:55:49,186 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1882 transitions. [2021-10-07 14:55:49,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:49,188 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:49,189 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:49,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-07 14:55:49,189 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:49,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:49,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1917674, now seen corresponding path program 5 times [2021-10-07 14:55:49,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:49,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532445705] [2021-10-07 14:55:49,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:49,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:49,310 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 14:55:49,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:49,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532445705] [2021-10-07 14:55:49,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532445705] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:49,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:49,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-07 14:55:49,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568696953] [2021-10-07 14:55:49,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:55:49,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:49,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:55:49,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:55:49,313 INFO L87 Difference]: Start difference. First operand 696 states and 1882 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 14:55:49,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:49,646 INFO L93 Difference]: Finished difference Result 1150 states and 3217 transitions. [2021-10-07 14:55:49,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 14:55:49,646 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 14:55:49,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:49,652 INFO L225 Difference]: With dead ends: 1150 [2021-10-07 14:55:49,652 INFO L226 Difference]: Without dead ends: 1126 [2021-10-07 14:55:49,652 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 158.5ms TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2021-10-07 14:55:49,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2021-10-07 14:55:49,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 750. [2021-10-07 14:55:49,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 747 states have (on average 2.7041499330655956) internal successors, (2020), 749 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:49,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 2020 transitions. [2021-10-07 14:55:49,681 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 2020 transitions. Word has length 21 [2021-10-07 14:55:49,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:49,681 INFO L470 AbstractCegarLoop]: Abstraction has 750 states and 2020 transitions. [2021-10-07 14:55:49,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 14:55:49,681 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 2020 transitions. [2021-10-07 14:55:49,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:49,684 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:49,684 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 14:55:49,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-07 14:55:49,685 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:49,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:49,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1811439, now seen corresponding path program 7 times [2021-10-07 14:55:49,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:49,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038487746] [2021-10-07 14:55:49,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:49,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:49,790 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 14:55:49,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:49,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038487746] [2021-10-07 14:55:49,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038487746] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:49,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:49,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-07 14:55:49,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796038452] [2021-10-07 14:55:49,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:55:49,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:49,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:55:49,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:55:49,793 INFO L87 Difference]: Start difference. First operand 750 states and 2020 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 14:55:50,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:50,117 INFO L93 Difference]: Finished difference Result 1144 states and 3186 transitions. [2021-10-07 14:55:50,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 14:55:50,118 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 14:55:50,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:50,122 INFO L225 Difference]: With dead ends: 1144 [2021-10-07 14:55:50,122 INFO L226 Difference]: Without dead ends: 1048 [2021-10-07 14:55:50,123 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 158.5ms TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2021-10-07 14:55:50,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2021-10-07 14:55:50,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 684. [2021-10-07 14:55:50,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 681 states have (on average 2.7151248164464024) internal successors, (1849), 683 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:50,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1849 transitions. [2021-10-07 14:55:50,157 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1849 transitions. Word has length 21 [2021-10-07 14:55:50,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:50,158 INFO L470 AbstractCegarLoop]: Abstraction has 684 states and 1849 transitions. [2021-10-07 14:55:50,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 14:55:50,158 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1849 transitions. [2021-10-07 14:55:50,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:50,160 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:50,160 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 14:55:50,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-07 14:55:50,161 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:50,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:50,162 INFO L82 PathProgramCache]: Analyzing trace with hash -469344658, now seen corresponding path program 6 times [2021-10-07 14:55:50,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:50,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459095969] [2021-10-07 14:55:50,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:50,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:50,239 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 14:55:50,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:50,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459095969] [2021-10-07 14:55:50,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459095969] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:50,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:50,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-07 14:55:50,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090282500] [2021-10-07 14:55:50,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 14:55:50,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:50,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 14:55:50,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:55:50,241 INFO L87 Difference]: Start difference. First operand 684 states and 1849 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 14:55:50,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:50,574 INFO L93 Difference]: Finished difference Result 1202 states and 3296 transitions. [2021-10-07 14:55:50,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 14:55:50,574 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 14:55:50,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:50,580 INFO L225 Difference]: With dead ends: 1202 [2021-10-07 14:55:50,580 INFO L226 Difference]: Without dead ends: 1186 [2021-10-07 14:55:50,581 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 131.3ms TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2021-10-07 14:55:50,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2021-10-07 14:55:50,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 688. [2021-10-07 14:55:50,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 685 states have (on average 2.7094890510948906) internal successors, (1856), 687 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:50,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1856 transitions. [2021-10-07 14:55:50,607 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1856 transitions. Word has length 21 [2021-10-07 14:55:50,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:50,607 INFO L470 AbstractCegarLoop]: Abstraction has 688 states and 1856 transitions. [2021-10-07 14:55:50,607 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 14:55:50,607 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1856 transitions. [2021-10-07 14:55:50,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:50,611 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:50,611 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 14:55:50,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-07 14:55:50,611 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:50,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:50,612 INFO L82 PathProgramCache]: Analyzing trace with hash -608766538, now seen corresponding path program 7 times [2021-10-07 14:55:50,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:50,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711324981] [2021-10-07 14:55:50,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:50,612 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:50,721 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 14:55:50,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:50,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711324981] [2021-10-07 14:55:50,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711324981] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:50,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:50,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-07 14:55:50,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418440969] [2021-10-07 14:55:50,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 14:55:50,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:50,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 14:55:50,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:55:50,724 INFO L87 Difference]: Start difference. First operand 688 states and 1856 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 14:55:51,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:51,028 INFO L93 Difference]: Finished difference Result 1160 states and 3252 transitions. [2021-10-07 14:55:51,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 14:55:51,028 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 14:55:51,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:51,032 INFO L225 Difference]: With dead ends: 1160 [2021-10-07 14:55:51,033 INFO L226 Difference]: Without dead ends: 1108 [2021-10-07 14:55:51,033 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 130.2ms TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2021-10-07 14:55:51,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2021-10-07 14:55:51,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 660. [2021-10-07 14:55:51,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 657 states have (on average 2.7427701674277016) internal successors, (1802), 659 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:51,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1802 transitions. [2021-10-07 14:55:51,059 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1802 transitions. Word has length 21 [2021-10-07 14:55:51,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:51,059 INFO L470 AbstractCegarLoop]: Abstraction has 660 states and 1802 transitions. [2021-10-07 14:55:51,059 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 14:55:51,059 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1802 transitions. [2021-10-07 14:55:51,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:51,062 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:51,063 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 14:55:51,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-07 14:55:51,063 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:51,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:51,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1567802887, now seen corresponding path program 8 times [2021-10-07 14:55:51,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:51,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358228012] [2021-10-07 14:55:51,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:51,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:51,180 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 14:55:51,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:51,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358228012] [2021-10-07 14:55:51,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358228012] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:51,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:51,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-07 14:55:51,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959561587] [2021-10-07 14:55:51,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 14:55:51,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:51,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 14:55:51,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:55:51,183 INFO L87 Difference]: Start difference. First operand 660 states and 1802 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 14:55:51,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:51,490 INFO L93 Difference]: Finished difference Result 1136 states and 3101 transitions. [2021-10-07 14:55:51,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 14:55:51,496 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 14:55:51,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:51,501 INFO L225 Difference]: With dead ends: 1136 [2021-10-07 14:55:51,501 INFO L226 Difference]: Without dead ends: 1110 [2021-10-07 14:55:51,502 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 134.7ms TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-10-07 14:55:51,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2021-10-07 14:55:51,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 660. [2021-10-07 14:55:51,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 657 states have (on average 2.7336377473363775) internal successors, (1796), 659 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:51,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1796 transitions. [2021-10-07 14:55:51,529 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1796 transitions. Word has length 21 [2021-10-07 14:55:51,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:51,529 INFO L470 AbstractCegarLoop]: Abstraction has 660 states and 1796 transitions. [2021-10-07 14:55:51,529 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 14:55:51,529 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1796 transitions. [2021-10-07 14:55:51,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:51,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:51,532 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 14:55:51,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-07 14:55:51,532 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:51,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:51,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1480115497, now seen corresponding path program 9 times [2021-10-07 14:55:51,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:51,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740146534] [2021-10-07 14:55:51,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:51,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:51,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:55:51,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:51,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740146534] [2021-10-07 14:55:51,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740146534] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:51,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:51,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-07 14:55:51,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634468049] [2021-10-07 14:55:51,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 14:55:51,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:51,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 14:55:51,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:55:51,653 INFO L87 Difference]: Start difference. First operand 660 states and 1796 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 14:55:52,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:52,036 INFO L93 Difference]: Finished difference Result 1128 states and 3161 transitions. [2021-10-07 14:55:52,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 14:55:52,036 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 14:55:52,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:52,041 INFO L225 Difference]: With dead ends: 1128 [2021-10-07 14:55:52,041 INFO L226 Difference]: Without dead ends: 1092 [2021-10-07 14:55:52,042 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 166.9ms TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2021-10-07 14:55:52,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2021-10-07 14:55:52,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 654. [2021-10-07 14:55:52,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 651 states have (on average 2.7357910906298004) internal successors, (1781), 653 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:52,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1781 transitions. [2021-10-07 14:55:52,066 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1781 transitions. Word has length 21 [2021-10-07 14:55:52,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:52,066 INFO L470 AbstractCegarLoop]: Abstraction has 654 states and 1781 transitions. [2021-10-07 14:55:52,066 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 14:55:52,067 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1781 transitions. [2021-10-07 14:55:52,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:52,069 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:52,069 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 14:55:52,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-07 14:55:52,070 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:52,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:52,070 INFO L82 PathProgramCache]: Analyzing trace with hash -166306442, now seen corresponding path program 8 times [2021-10-07 14:55:52,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:52,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484767173] [2021-10-07 14:55:52,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:52,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:52,165 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 14:55:52,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:52,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484767173] [2021-10-07 14:55:52,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484767173] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:52,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:52,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-07 14:55:52,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345194543] [2021-10-07 14:55:52,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 14:55:52,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:52,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 14:55:52,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:55:52,167 INFO L87 Difference]: Start difference. First operand 654 states and 1781 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 14:55:52,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:52,478 INFO L93 Difference]: Finished difference Result 990 states and 2795 transitions. [2021-10-07 14:55:52,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 14:55:52,478 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 14:55:52,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:52,483 INFO L225 Difference]: With dead ends: 990 [2021-10-07 14:55:52,483 INFO L226 Difference]: Without dead ends: 966 [2021-10-07 14:55:52,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 133.0ms TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-10-07 14:55:52,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2021-10-07 14:55:52,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 690. [2021-10-07 14:55:52,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 687 states have (on average 2.7190684133915575) internal successors, (1868), 689 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:52,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1868 transitions. [2021-10-07 14:55:52,507 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1868 transitions. Word has length 21 [2021-10-07 14:55:52,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:52,507 INFO L470 AbstractCegarLoop]: Abstraction has 690 states and 1868 transitions. [2021-10-07 14:55:52,507 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 14:55:52,507 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1868 transitions. [2021-10-07 14:55:52,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:52,510 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:52,510 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 14:55:52,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-07 14:55:52,510 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:52,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:52,511 INFO L82 PathProgramCache]: Analyzing trace with hash -166200207, now seen corresponding path program 10 times [2021-10-07 14:55:52,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:52,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574013108] [2021-10-07 14:55:52,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:52,512 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:52,589 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 14:55:52,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:52,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574013108] [2021-10-07 14:55:52,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574013108] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:52,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:52,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-07 14:55:52,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987112562] [2021-10-07 14:55:52,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 14:55:52,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:52,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 14:55:52,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:55:52,591 INFO L87 Difference]: Start difference. First operand 690 states and 1868 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 14:55:52,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:52,886 INFO L93 Difference]: Finished difference Result 984 states and 2764 transitions. [2021-10-07 14:55:52,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 14:55:52,887 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 14:55:52,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:52,890 INFO L225 Difference]: With dead ends: 984 [2021-10-07 14:55:52,891 INFO L226 Difference]: Without dead ends: 900 [2021-10-07 14:55:52,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 138.9ms TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-10-07 14:55:52,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2021-10-07 14:55:52,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 636. [2021-10-07 14:55:52,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 633 states have (on average 2.7140600315955767) internal successors, (1718), 635 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:52,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1718 transitions. [2021-10-07 14:55:52,911 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1718 transitions. Word has length 21 [2021-10-07 14:55:52,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:52,911 INFO L470 AbstractCegarLoop]: Abstraction has 636 states and 1718 transitions. [2021-10-07 14:55:52,911 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 14:55:52,912 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1718 transitions. [2021-10-07 14:55:52,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:52,914 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:52,914 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 14:55:52,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-07 14:55:52,914 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:52,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:52,915 INFO L82 PathProgramCache]: Analyzing trace with hash -480336452, now seen corresponding path program 9 times [2021-10-07 14:55:52,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:52,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773444660] [2021-10-07 14:55:52,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:52,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:53,010 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 14:55:53,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:53,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773444660] [2021-10-07 14:55:53,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773444660] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:53,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:53,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-07 14:55:53,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611456352] [2021-10-07 14:55:53,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:55:53,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:53,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:55:53,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:55:53,013 INFO L87 Difference]: Start difference. First operand 636 states and 1718 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 14:55:53,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:53,411 INFO L93 Difference]: Finished difference Result 1008 states and 2822 transitions. [2021-10-07 14:55:53,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 14:55:53,411 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 14:55:53,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:53,415 INFO L225 Difference]: With dead ends: 1008 [2021-10-07 14:55:53,415 INFO L226 Difference]: Without dead ends: 984 [2021-10-07 14:55:53,416 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 191.4ms TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2021-10-07 14:55:53,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2021-10-07 14:55:53,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 690. [2021-10-07 14:55:53,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 687 states have (on average 2.7016011644832605) internal successors, (1856), 689 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:53,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1856 transitions. [2021-10-07 14:55:53,437 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1856 transitions. Word has length 21 [2021-10-07 14:55:53,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:53,438 INFO L470 AbstractCegarLoop]: Abstraction has 690 states and 1856 transitions. [2021-10-07 14:55:53,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 14:55:53,438 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1856 transitions. [2021-10-07 14:55:53,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:53,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:53,441 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 14:55:53,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-10-07 14:55:53,441 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:53,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:53,442 INFO L82 PathProgramCache]: Analyzing trace with hash -480230217, now seen corresponding path program 11 times [2021-10-07 14:55:53,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:53,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698265859] [2021-10-07 14:55:53,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:53,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:53,531 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 14:55:53,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:53,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698265859] [2021-10-07 14:55:53,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698265859] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:53,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:53,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-07 14:55:53,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702777526] [2021-10-07 14:55:53,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:55:53,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:53,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:55:53,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:55:53,534 INFO L87 Difference]: Start difference. First operand 690 states and 1856 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 14:55:53,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:53,870 INFO L93 Difference]: Finished difference Result 1002 states and 2791 transitions. [2021-10-07 14:55:53,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 14:55:53,870 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 14:55:53,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:53,876 INFO L225 Difference]: With dead ends: 1002 [2021-10-07 14:55:53,876 INFO L226 Difference]: Without dead ends: 876 [2021-10-07 14:55:53,876 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 171.9ms TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2021-10-07 14:55:53,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2021-10-07 14:55:53,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 624. [2021-10-07 14:55:53,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 621 states have (on average 2.7004830917874396) internal successors, (1677), 623 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:53,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 1677 transitions. [2021-10-07 14:55:53,893 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 1677 transitions. Word has length 21 [2021-10-07 14:55:53,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:53,894 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 1677 transitions. [2021-10-07 14:55:53,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 14:55:53,894 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 1677 transitions. [2021-10-07 14:55:53,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:53,896 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:53,896 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 14:55:53,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-10-07 14:55:53,896 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:53,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:53,897 INFO L82 PathProgramCache]: Analyzing trace with hash 568879225, now seen corresponding path program 12 times [2021-10-07 14:55:53,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:53,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395640256] [2021-10-07 14:55:53,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:53,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:53,972 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 14:55:53,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:53,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395640256] [2021-10-07 14:55:53,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395640256] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:53,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:53,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-07 14:55:53,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480761833] [2021-10-07 14:55:53,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 14:55:53,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:53,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 14:55:53,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:55:53,975 INFO L87 Difference]: Start difference. First operand 624 states and 1677 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 14:55:54,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:54,255 INFO L93 Difference]: Finished difference Result 1076 states and 2926 transitions. [2021-10-07 14:55:54,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 14:55:54,256 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 14:55:54,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:54,258 INFO L225 Difference]: With dead ends: 1076 [2021-10-07 14:55:54,258 INFO L226 Difference]: Without dead ends: 1050 [2021-10-07 14:55:54,258 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 130.4ms TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-10-07 14:55:54,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2021-10-07 14:55:54,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 640. [2021-10-07 14:55:54,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 637 states have (on average 2.708006279434851) internal successors, (1725), 639 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:54,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1725 transitions. [2021-10-07 14:55:54,277 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1725 transitions. Word has length 21 [2021-10-07 14:55:54,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:54,277 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 1725 transitions. [2021-10-07 14:55:54,278 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 14:55:54,278 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1725 transitions. [2021-10-07 14:55:54,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:54,280 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:54,280 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] [2021-10-07 14:55:54,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-10-07 14:55:54,281 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:54,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:54,281 INFO L82 PathProgramCache]: Analyzing trace with hash 954375939, now seen corresponding path program 13 times [2021-10-07 14:55:54,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:54,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033644928] [2021-10-07 14:55:54,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:54,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:54,354 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 14:55:54,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:54,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033644928] [2021-10-07 14:55:54,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033644928] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:54,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:54,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-07 14:55:54,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049745687] [2021-10-07 14:55:54,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 14:55:54,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:54,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 14:55:54,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:55:54,356 INFO L87 Difference]: Start difference. First operand 640 states and 1725 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 14:55:54,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:54,657 INFO L93 Difference]: Finished difference Result 1038 states and 2855 transitions. [2021-10-07 14:55:54,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 14:55:54,657 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 14:55:54,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:54,659 INFO L225 Difference]: With dead ends: 1038 [2021-10-07 14:55:54,660 INFO L226 Difference]: Without dead ends: 1010 [2021-10-07 14:55:54,660 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 142.2ms TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2021-10-07 14:55:54,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2021-10-07 14:55:54,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 656. [2021-10-07 14:55:54,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 653 states have (on average 2.6906584992343032) internal successors, (1757), 655 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:54,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1757 transitions. [2021-10-07 14:55:54,692 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1757 transitions. Word has length 21 [2021-10-07 14:55:54,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:54,692 INFO L470 AbstractCegarLoop]: Abstraction has 656 states and 1757 transitions. [2021-10-07 14:55:54,693 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 14:55:54,693 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1757 transitions. [2021-10-07 14:55:54,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:54,695 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:54,695 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 14:55:54,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-10-07 14:55:54,698 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:54,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:54,699 INFO L82 PathProgramCache]: Analyzing trace with hash -168521415, now seen corresponding path program 14 times [2021-10-07 14:55:54,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:54,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081977763] [2021-10-07 14:55:54,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:54,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:54,791 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 14:55:54,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:54,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081977763] [2021-10-07 14:55:54,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081977763] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:54,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:54,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-07 14:55:54,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853533231] [2021-10-07 14:55:54,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 14:55:54,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:54,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 14:55:54,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:55:54,794 INFO L87 Difference]: Start difference. First operand 656 states and 1757 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 14:55:55,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:55,084 INFO L93 Difference]: Finished difference Result 1028 states and 2833 transitions. [2021-10-07 14:55:55,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 14:55:55,084 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 14:55:55,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:55,086 INFO L225 Difference]: With dead ends: 1028 [2021-10-07 14:55:55,086 INFO L226 Difference]: Without dead ends: 1004 [2021-10-07 14:55:55,087 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 124.5ms TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2021-10-07 14:55:55,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-10-07 14:55:55,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 692. [2021-10-07 14:55:55,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 689 states have (on average 2.6777939042089987) internal successors, (1845), 691 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:55,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1845 transitions. [2021-10-07 14:55:55,104 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1845 transitions. Word has length 21 [2021-10-07 14:55:55,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:55,104 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 1845 transitions. [2021-10-07 14:55:55,104 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 14:55:55,105 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1845 transitions. [2021-10-07 14:55:55,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:55,107 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:55,107 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 14:55:55,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-10-07 14:55:55,107 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:55,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:55,108 INFO L82 PathProgramCache]: Analyzing trace with hash -136194112, now seen corresponding path program 1 times [2021-10-07 14:55:55,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:55,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126091231] [2021-10-07 14:55:55,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:55,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:55,179 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 14:55:55,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:55,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126091231] [2021-10-07 14:55:55,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126091231] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:55,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:55,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-07 14:55:55,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037098068] [2021-10-07 14:55:55,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 14:55:55,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:55,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 14:55:55,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:55:55,182 INFO L87 Difference]: Start difference. First operand 692 states and 1845 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 14:55:55,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:55,512 INFO L93 Difference]: Finished difference Result 1020 states and 2815 transitions. [2021-10-07 14:55:55,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 14:55:55,512 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 14:55:55,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:55,515 INFO L225 Difference]: With dead ends: 1020 [2021-10-07 14:55:55,516 INFO L226 Difference]: Without dead ends: 964 [2021-10-07 14:55:55,516 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 136.3ms TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-10-07 14:55:55,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2021-10-07 14:55:55,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 652. [2021-10-07 14:55:55,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 649 states have (on average 2.6764252696456086) internal successors, (1737), 651 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:55,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1737 transitions. [2021-10-07 14:55:55,532 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1737 transitions. Word has length 21 [2021-10-07 14:55:55,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:55,533 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 1737 transitions. [2021-10-07 14:55:55,533 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 14:55:55,533 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1737 transitions. [2021-10-07 14:55:55,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:55,535 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:55,535 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 14:55:55,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-10-07 14:55:55,536 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:55,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:55,536 INFO L82 PathProgramCache]: Analyzing trace with hash -286650263, now seen corresponding path program 15 times [2021-10-07 14:55:55,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:55,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813810840] [2021-10-07 14:55:55,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:55,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:55,613 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 14:55:55,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:55,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813810840] [2021-10-07 14:55:55,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813810840] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:55,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:55,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-07 14:55:55,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228070828] [2021-10-07 14:55:55,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:55:55,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:55,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:55:55,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:55:55,615 INFO L87 Difference]: Start difference. First operand 652 states and 1737 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 14:55:55,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:55,968 INFO L93 Difference]: Finished difference Result 1068 states and 2921 transitions. [2021-10-07 14:55:55,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 14:55:55,969 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 14:55:55,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:55,971 INFO L225 Difference]: With dead ends: 1068 [2021-10-07 14:55:55,972 INFO L226 Difference]: Without dead ends: 1044 [2021-10-07 14:55:55,972 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 171.5ms TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2021-10-07 14:55:55,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2021-10-07 14:55:55,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 700. [2021-10-07 14:55:55,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 697 states have (on average 2.6700143472022955) internal successors, (1861), 699 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:55,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1861 transitions. [2021-10-07 14:55:55,994 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1861 transitions. Word has length 21 [2021-10-07 14:55:55,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:55,995 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 1861 transitions. [2021-10-07 14:55:55,995 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 14:55:55,995 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1861 transitions. [2021-10-07 14:55:55,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:55,997 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:55,998 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 14:55:55,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-10-07 14:55:55,998 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:55,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:55,998 INFO L82 PathProgramCache]: Analyzing trace with hash -254322960, now seen corresponding path program 2 times [2021-10-07 14:55:55,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:55,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129934762] [2021-10-07 14:55:55,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:55,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:56,077 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 14:55:56,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:56,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129934762] [2021-10-07 14:55:56,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129934762] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:56,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:56,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-07 14:55:56,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702431486] [2021-10-07 14:55:56,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:55:56,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:56,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:55:56,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:55:56,080 INFO L87 Difference]: Start difference. First operand 700 states and 1861 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 14:55:56,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:56,446 INFO L93 Difference]: Finished difference Result 1052 states and 2885 transitions. [2021-10-07 14:55:56,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 14:55:56,447 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 14:55:56,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:56,449 INFO L225 Difference]: With dead ends: 1052 [2021-10-07 14:55:56,449 INFO L226 Difference]: Without dead ends: 932 [2021-10-07 14:55:56,450 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 167.9ms TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2021-10-07 14:55:56,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2021-10-07 14:55:56,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 636. [2021-10-07 14:55:56,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 633 states have (on average 2.6587677725118484) internal successors, (1683), 635 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:56,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1683 transitions. [2021-10-07 14:55:56,469 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1683 transitions. Word has length 21 [2021-10-07 14:55:56,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:56,470 INFO L470 AbstractCegarLoop]: Abstraction has 636 states and 1683 transitions. [2021-10-07 14:55:56,470 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 14:55:56,470 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1683 transitions. [2021-10-07 14:55:56,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:56,472 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:56,472 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:56,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-10-07 14:55:56,472 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:56,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:56,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1375333814, now seen corresponding path program 10 times [2021-10-07 14:55:56,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:56,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731197265] [2021-10-07 14:55:56,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:56,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:56,550 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 14:55:56,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:56,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731197265] [2021-10-07 14:55:56,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731197265] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:56,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:56,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-07 14:55:56,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744453799] [2021-10-07 14:55:56,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:55:56,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:56,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:55:56,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:55:56,552 INFO L87 Difference]: Start difference. First operand 636 states and 1683 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 14:55:56,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:56,883 INFO L93 Difference]: Finished difference Result 876 states and 2401 transitions. [2021-10-07 14:55:56,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 14:55:56,884 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 14:55:56,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:56,887 INFO L225 Difference]: With dead ends: 876 [2021-10-07 14:55:56,887 INFO L226 Difference]: Without dead ends: 820 [2021-10-07 14:55:56,888 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 140.7ms TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2021-10-07 14:55:56,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2021-10-07 14:55:56,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 602. [2021-10-07 14:55:56,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 599 states have (on average 2.656093489148581) internal successors, (1591), 601 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:56,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1591 transitions. [2021-10-07 14:55:56,912 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1591 transitions. Word has length 21 [2021-10-07 14:55:56,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:56,912 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 1591 transitions. [2021-10-07 14:55:56,912 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 14:55:56,912 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1591 transitions. [2021-10-07 14:55:56,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:56,915 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:56,915 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:55:56,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-10-07 14:55:56,916 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:56,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:56,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1375440049, now seen corresponding path program 16 times [2021-10-07 14:55:56,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:56,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523937922] [2021-10-07 14:55:56,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:56,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:57,021 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 14:55:57,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:57,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523937922] [2021-10-07 14:55:57,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523937922] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:57,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:57,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-07 14:55:57,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798429383] [2021-10-07 14:55:57,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:55:57,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:57,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:55:57,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:55:57,025 INFO L87 Difference]: Start difference. First operand 602 states and 1591 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 14:55:57,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:57,368 INFO L93 Difference]: Finished difference Result 838 states and 2293 transitions. [2021-10-07 14:55:57,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 14:55:57,369 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 14:55:57,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:57,372 INFO L225 Difference]: With dead ends: 838 [2021-10-07 14:55:57,372 INFO L226 Difference]: Without dead ends: 736 [2021-10-07 14:55:57,373 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 166.0ms TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2021-10-07 14:55:57,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-10-07 14:55:57,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 536. [2021-10-07 14:55:57,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 533 states have (on average 2.6378986866791743) internal successors, (1406), 535 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:57,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1406 transitions. [2021-10-07 14:55:57,396 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1406 transitions. Word has length 21 [2021-10-07 14:55:57,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:57,396 INFO L470 AbstractCegarLoop]: Abstraction has 536 states and 1406 transitions. [2021-10-07 14:55:57,397 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 14:55:57,397 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1406 transitions. [2021-10-07 14:55:57,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:57,399 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:57,400 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 14:55:57,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-10-07 14:55:57,400 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:57,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:57,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1917791754, now seen corresponding path program 11 times [2021-10-07 14:55:57,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:57,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559259206] [2021-10-07 14:55:57,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:57,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:57,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:57,535 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 14:55:57,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:57,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559259206] [2021-10-07 14:55:57,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559259206] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:57,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:57,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-07 14:55:57,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349752315] [2021-10-07 14:55:57,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:55:57,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:57,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:55:57,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:55:57,539 INFO L87 Difference]: Start difference. First operand 536 states and 1406 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 14:55:57,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:57,802 INFO L93 Difference]: Finished difference Result 732 states and 2005 transitions. [2021-10-07 14:55:57,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 14:55:57,802 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 14:55:57,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:57,805 INFO L225 Difference]: With dead ends: 732 [2021-10-07 14:55:57,805 INFO L226 Difference]: Without dead ends: 706 [2021-10-07 14:55:57,805 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 131.8ms TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-10-07 14:55:57,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-10-07 14:55:57,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 498. [2021-10-07 14:55:57,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 496 states have (on average 2.6733870967741935) internal successors, (1326), 497 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:57,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1326 transitions. [2021-10-07 14:55:57,835 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1326 transitions. Word has length 21 [2021-10-07 14:55:57,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:57,835 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 1326 transitions. [2021-10-07 14:55:57,835 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 14:55:57,836 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1326 transitions. [2021-10-07 14:55:57,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:57,837 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:57,837 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 14:55:57,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-10-07 14:55:57,838 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:57,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:57,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1917737096, now seen corresponding path program 3 times [2021-10-07 14:55:57,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:57,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055835606] [2021-10-07 14:55:57,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:57,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:57,916 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 14:55:57,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:57,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055835606] [2021-10-07 14:55:57,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055835606] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:57,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:57,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-07 14:55:57,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084525063] [2021-10-07 14:55:57,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:55:57,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:57,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:55:57,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:55:57,918 INFO L87 Difference]: Start difference. First operand 498 states and 1326 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 14:55:58,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:58,219 INFO L93 Difference]: Finished difference Result 708 states and 1945 transitions. [2021-10-07 14:55:58,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 14:55:58,220 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 14:55:58,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:58,221 INFO L225 Difference]: With dead ends: 708 [2021-10-07 14:55:58,221 INFO L226 Difference]: Without dead ends: 576 [2021-10-07 14:55:58,222 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 148.3ms TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2021-10-07 14:55:58,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-10-07 14:55:58,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 408. [2021-10-07 14:55:58,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 406 states have (on average 2.583743842364532) internal successors, (1049), 407 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:58,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 1049 transitions. [2021-10-07 14:55:58,231 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 1049 transitions. Word has length 21 [2021-10-07 14:55:58,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:58,231 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 1049 transitions. [2021-10-07 14:55:58,231 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 14:55:58,232 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 1049 transitions. [2021-10-07 14:55:58,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:58,233 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:58,233 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 14:55:58,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-10-07 14:55:58,233 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:58,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:58,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1815749576, now seen corresponding path program 4 times [2021-10-07 14:55:58,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:58,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354417184] [2021-10-07 14:55:58,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:58,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:58,322 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 14:55:58,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:58,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354417184] [2021-10-07 14:55:58,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354417184] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:58,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:58,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-07 14:55:58,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036681089] [2021-10-07 14:55:58,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:55:58,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:58,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:55:58,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:55:58,324 INFO L87 Difference]: Start difference. First operand 408 states and 1049 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 14:55:58,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:58,576 INFO L93 Difference]: Finished difference Result 574 states and 1524 transitions. [2021-10-07 14:55:58,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 14:55:58,582 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 14:55:58,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:58,584 INFO L225 Difference]: With dead ends: 574 [2021-10-07 14:55:58,584 INFO L226 Difference]: Without dead ends: 542 [2021-10-07 14:55:58,586 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 130.6ms TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-10-07 14:55:58,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-10-07 14:55:58,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 374. [2021-10-07 14:55:58,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 2.6058981233243967) internal successors, (972), 373 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:55:58,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 972 transitions. [2021-10-07 14:55:58,596 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 972 transitions. Word has length 21 [2021-10-07 14:55:58,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:58,596 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 972 transitions. [2021-10-07 14:55:58,596 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 14:55:58,596 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 972 transitions. [2021-10-07 14:55:58,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:55:58,597 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:55:58,598 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 14:55:58,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-10-07 14:55:58,598 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-07 14:55:58,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:55:58,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1815697999, now seen corresponding path program 17 times [2021-10-07 14:55:58,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:55:58,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11685467] [2021-10-07 14:55:58,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:55:58,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:55:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:55:58,716 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 14:55:58,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:55:58,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11685467] [2021-10-07 14:55:58,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11685467] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:55:58,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:55:58,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-07 14:55:58,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589527453] [2021-10-07 14:55:58,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:55:58,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:55:58,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:55:58,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:55:58,719 INFO L87 Difference]: Start difference. First operand 374 states and 972 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 14:55:58,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:55:58,946 INFO L93 Difference]: Finished difference Result 536 states and 1439 transitions. [2021-10-07 14:55:58,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 14:55:58,947 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 14:55:58,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:55:58,947 INFO L225 Difference]: With dead ends: 536 [2021-10-07 14:55:58,947 INFO L226 Difference]: Without dead ends: 0 [2021-10-07 14:55:58,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 125.1ms TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-10-07 14:55:58,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-07 14:55:58,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-07 14:55:58,948 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 14:55:58,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-07 14:55:58,949 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-10-07 14:55:58,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:55:58,949 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-07 14:55:58,949 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 14:55:58,949 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-07 14:55:58,949 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-07 14:55:58,952 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:58,954 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:58,954 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:58,954 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:58,954 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:58,954 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:58,955 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:58,955 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:58,955 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:58,955 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:58,955 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:58,956 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:58,956 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 14:55:58,956 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 14:55:58,956 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-07 14:55:58,956 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:58,957 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:58,957 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:58,957 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:58,957 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:58,957 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:58,958 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:58,958 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:58,958 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:58,958 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:58,958 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:58,959 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:55:58,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-10-07 14:55:58,967 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 14:55:58,968 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 14:55:58,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 02:55:58 BasicIcfg [2021-10-07 14:55:58,970 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 14:55:58,971 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-07 14:55:58,971 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-07 14:55:58,971 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-07 14:55:58,972 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:55:35" (3/4) ... [2021-10-07 14:55:58,975 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-07 14:55:58,984 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-07 14:55:58,984 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-07 14:55:58,984 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-07 14:55:58,990 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-07 14:55:58,991 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-07 14:55:58,991 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-07 14:55:58,991 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-07 14:55:59,042 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/weaver/parallel-ticket-3.wvr.c-witness.graphml [2021-10-07 14:55:59,042 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-07 14:55:59,045 INFO L168 Benchmark]: Toolchain (without parser) took 25258.96 ms. Allocated memory was 152.0 MB in the beginning and 224.4 MB in the end (delta: 72.4 MB). Free memory was 127.7 MB in the beginning and 97.2 MB in the end (delta: 30.4 MB). Peak memory consumption was 104.2 MB. Max. memory is 8.0 GB. [2021-10-07 14:55:59,045 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory is still 122.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 14:55:59,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.92 ms. Allocated memory is still 152.0 MB. Free memory was 127.4 MB in the beginning and 117.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-10-07 14:55:59,053 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.04 ms. Allocated memory is still 152.0 MB. Free memory was 117.1 MB in the beginning and 115.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 14:55:59,053 INFO L168 Benchmark]: Boogie Preprocessor took 30.21 ms. Allocated memory is still 152.0 MB. Free memory was 115.1 MB in the beginning and 113.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 14:55:59,054 INFO L168 Benchmark]: RCFGBuilder took 869.03 ms. Allocated memory is still 152.0 MB. Free memory was 113.8 MB in the beginning and 131.2 MB in the end (delta: -17.5 MB). Peak memory consumption was 19.3 MB. Max. memory is 8.0 GB. [2021-10-07 14:55:59,054 INFO L168 Benchmark]: TraceAbstraction took 23883.64 ms. Allocated memory was 152.0 MB in the beginning and 224.4 MB in the end (delta: 72.4 MB). Free memory was 130.7 MB in the beginning and 100.4 MB in the end (delta: 30.3 MB). Peak memory consumption was 102.7 MB. Max. memory is 8.0 GB. [2021-10-07 14:55:59,054 INFO L168 Benchmark]: Witness Printer took 71.24 ms. Allocated memory is still 224.4 MB. Free memory was 100.4 MB in the beginning and 97.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-10-07 14:55:59,057 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory is still 122.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 337.92 ms. Allocated memory is still 152.0 MB. Free memory was 127.4 MB in the beginning and 117.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 50.04 ms. Allocated memory is still 152.0 MB. Free memory was 117.1 MB in the beginning and 115.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.21 ms. Allocated memory is still 152.0 MB. Free memory was 115.1 MB in the beginning and 113.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 869.03 ms. Allocated memory is still 152.0 MB. Free memory was 113.8 MB in the beginning and 131.2 MB in the end (delta: -17.5 MB). Peak memory consumption was 19.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 23883.64 ms. Allocated memory was 152.0 MB in the beginning and 224.4 MB in the end (delta: 72.4 MB). Free memory was 130.7 MB in the beginning and 100.4 MB in the end (delta: 30.3 MB). Peak memory consumption was 102.7 MB. Max. memory is 8.0 GB. * Witness Printer took 71.24 ms. Allocated memory is still 224.4 MB. Free memory was 100.4 MB in the beginning and 97.2 MB in the end (delta: 3.1 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: 5901.4ms, 154 PlacesBefore, 54 PlacesAfterwards, 149 TransitionsBefore, 46 TransitionsAfterwards, 3640 CoEnabledTransitionPairs, 7 FixpointIterations, 65 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 130 TotalNumberOfCompositions, 9001 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4980, positive: 4785, positive conditional: 0, positive unconditional: 4785, negative: 195, negative conditional: 0, negative unconditional: 195, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2615, positive: 2561, positive conditional: 0, positive unconditional: 2561, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2615, positive: 2548, positive conditional: 0, positive unconditional: 2548, negative: 67, negative conditional: 0, negative unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 67, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 115, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 102, negative conditional: 0, negative unconditional: 102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4980, positive: 2224, positive conditional: 0, positive unconditional: 2224, negative: 141, negative conditional: 0, negative unconditional: 141, unknown: 2615, unknown conditional: 0, unknown unconditional: 2615] , Statistics on independence cache: Total cache size (in pairs): 353, Positive cache size: 328, Positive conditional cache size: 0, Positive unconditional cache size: 328, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 206 locations, 27 error locations. Started 1 CEGAR loops. OverallTime: 23709.3ms, OverallIterations: 43, TraceHistogramMax: 1, EmptinessCheckTime: 122.0ms, AutomataDifference: 11809.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6084.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2047 SDtfs, 5751 SDslu, 8576 SDs, 0 SdLazy, 8861 SolverSat, 1389 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5469.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 707 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 684 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1949 ImplicationChecksByTransitivity, 4701.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2658occurred in iteration=0, InterpolantAutomatonStates: 544, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1423.1ms AutomataMinimizationTime, 43 MinimizatonAttempts, 14214 StatesRemovedByMinimization, 39 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 96.2ms SsaConstructionTime, 683.6ms SatisfiabilityAnalysisTime, 2973.0ms InterpolantComputationTime, 780 NumberOfCodeBlocks, 780 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 737 ConstructedInterpolants, 0 QuantifiedInterpolants, 3289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 43 InterpolantComputations, 43 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 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-07 14:55:59,116 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...